BRITISH STANDARD BS EN756:2004Welding consumables—Solid wires, solidwire-flux and tubular cored electrode-flux combinations for submerged arc weldingof non alloy and finegrain steels— ClassificationThe European Standard EN 756:2004 has the status of aBritish StandardICS 25.160.2012 &23<,1* :,7+287 %6, 3(50,66,21 (;&(37 $6 3(50,77(' %< &23<5,*+7 /$:BS EN 756:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10March 2004© BSI 10March 2004ISBN 0 580 43546 6National forewordThis British Standard is the official English language version of EN 756:2004. It supersedes BS EN 756:1996 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/39, Welding consumables, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or Europeanpublications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.—aid enquirers to understand the text;—present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the —Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publication Amd. No.Date CommentsEUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORMEN 756March 2004ICS 25.160.20Supersedes EN 756:1995English versionWelding consumables - Solid wires, solid wire-flux and tubular cored electrode-flux combinations for submerged arc welding ofnon alloy and fine grain steels - ClassificationProduits consommables pour le soudage - Fils pleins,couples fils pleins-flux et fils fourrés-flux pour le soudage àl'arc sous flux des aciers non alliés et à grains fins -ClassificationSchweißzusätze - Massivdrähte, Fülldrähte undDrahtpulver-Kombinationen zum Unterpulverschweißen von unlegierten Stählen und Feinkornbaustählen - EinteilungThis European Standard was approved by CEN on 2 January 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T É E U R O P ÉE N D E N O R M A LI S A T I O N C HES KOM ITEE FÜR NOR M UNG© 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members.Ref. No. EN 756:2004: EEN 756:2004 (E)ContentsPage Foreword (3)Introduction (4)1Scope (5)2Normative references (5)3Classification (5)4Symbols and requirements (6)4.1Symbol for the process (6)4.2Symbol for the tensile properties (6)4.2.1Multi run technique (6)4.2.2Two-run technique (6)4.3Symbol for the impact properties of all-weld metal or two-run weldment (6)4.4Symbol for the type of welding flux (7)4.5Symbol for the chemical composition of solid wire electrodes or the all-weld metaldeposited by a tubular cored electrode-flux combinations (7)5Mechanical tests (9)5.1Multi run technique (9)5.2Two run technique (10)6Chemical analysis (10)7Technical delivery conditions (10)8Designation (10)Bibliography (12)2EN 756:2004 (E)ForewordThis document (EN 756:2004) has been prepared by Technical Committee CEN/TC 121 “Welding”, the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2004, and conflicting national standards shall be withdrawn at the latest by September 2004.This document supersedes EN 756:1995.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.3EN 756:2004 (E)IntroductionThis standard proposes a classification in order to designate solid wire electrodes by chemical analyses and solid wire-flux combinations in terms of the yield strength, tensile strength and elongation and impact properties of the all-weld metal. Tubular cored electrode-flux combinations are designated by the chemical composition; yield strength, tensile strength and elongation and impact properties of the all-weld metal. The ratio of yield to tensile strength of weld metal is generally higher than that of parent metal. Users should note that matching weld metal yield strength to parent metal yield strength will not necessarily ensure that the weld metal tensile strength matches that of the parent material. Where the application requires matching tensile strength, therefore, selection of the consumable should be made by reference to column 3 of Table 1.Although combinations of electrodes and fluxes supplied by individual companies may have the same grading, the individual electrodes and fluxes from different companies are not interchangeable unless verified according to this standard.It should be noted that the mechanical properties of all-weld metal test specimens used to classify the electrode-flux combinations will vary from those obtained in production joints because of differences in welding procedures such as electrode size and parent metal chemical composition.4EN 756:2004 (E)1 ScopeThis standard specifies requirements for classification of electrode-flux combinations and all-weld metal in the as-welded condition for submerged arc welding of non alloy and fine grain steels with a minimum yield strength of up to 500 MPa. Classification can be made with solid wire electrodes or tubular cored electrodes. One flux may be classified with different electrodes. The solid wire electrode is also classified separately based on its chemical composition. Fluxes for the single and two run techniques are classified on the basis of the two run technique.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to European Standards only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).EN ISO 544, Welding consumables – Technical delivery conditions for welding filler materials – Type of product, dimensions, tolerances and markings (ISO 544:2003).EN 760, Welding consumables – Fluxes for submerged arc welding – Classification.EN 1597-1, Welding consumables - Test methods - Part 1: Test piece for all-weld metal test specimens in steel, nickel and nickel alloys.EN 1597-2, Welding consumables - Test methods - Part 2: Preparation of test piece for single-run and two-run technique test specimens in steel.EN ISO 6847, Welding consumables - Deposition of a weld metal pad for chemical analysis (ISO 6847:2000). EN ISO 13916, Welding – Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature (ISO 13916:1996).ISO 31-0:1992, Quantities and units – Part 0: General principles.3 ClassificationThe classification includes all-weld metal properties obtained with a manufacturer's specific electrode-flux combination as given below. A solid wire electrode may be separately classified with the symbol for its chemical composition in Table 5.The classification is divided into five parts:1) The first part gives a symbol indicating the process to be identified.2) The second part gives a symbol indicating strength and elongation of all-weld metal for multi runtechnique or the strength of the parent material used in classification for the two run technique.3) The third part gives a symbol indicating impact properties of the all-weld metal or the two run weldedjoint.4) The fourth part gives a symbol indicating the type of flux used.5) The fifth part gives a symbol indicating the chemical composition of the solid wire electrode used or thechemical composition of the all-weld metal deposited by a tubular cored electrode-flux combination.5EN 756:2004 (E)64 Symbols and requirements4.1 Symbol for the processThe symbol for a solid wire electrode and/or an electrode-flux combination used in the submerged arc welding process shall be the letter S.4.2 Symbol for the tensile properties4.2.1 Multi run techniqueThe symbol in Table 1 indicates yield strength, tensile strength and elongation of the all-weld metal in the as-welded condition determined in accordance with 5.1.Table 1 — Symbol for tensile properties by multi run technique SymbolMinimumyield strengthaMPa Tensile strength MPa Minimum elongationb%35355440 to 5702238380470 to 6002042420500 to 6402046460530 to 6802050500560 to 72018a For yield strength the lower yield (R eL ) shall be used when yielding occurs, otherwise the 0,2 % proof strength (R pO,2) shall be used.bGauge length is equal to five times the specimen diameter.4.2.2 Two-run techniqueThe symbol indicates strength of the welded joint in relation to strength of the parent material used in two-run welding tests satisfactorily completed in accordance with 5.2.Table 2 — Symbol for the tensile properties by two-run technique SymbolMinimum parent material yield strength MPa Minimum tensile strength of the welded jointMPa 2T 2753703T 3554704T 4205205T5006004.3 Symbol for the impact properties of all-weld metal or two-run weldmentThe symbol in Table 3 indicates the temperature at which an average impact energy of 47 J is achieved under conditions given in clause 5. Three specimens shall be tested. Only one individual value may be lower than 47 J but not lower than 32 J. When an electrode-flux combination has been classified for a certain temperature, it automatically covers any higher temperature in Table 3.EN 756:2004 (E)Table 3 — Symbol for the impact properties of all-weld metal or two-run welded joint Symbol Temperature for minimum average impact energy of 47 J°CZ no requirementsA+20002-203-304-405-506-607-708-804.4 Symbol for the type of welding fluxThe symbol in Table 4 indicates the welding flux as described in EN 760.Table 4 — Symbol for the type of welding fluxType of flux SymbolManganese-silicate MSCalcium-silicate CSZirconium-silicate ZSRutile-silicate RSAluminate-rutile ARAluminate-basic ABAluminate-silicate ASAluminate-fluoride-basic AFFluoride-basic FBAny other type Z4.5 Symbol for the chemical composition of solid wire electrodes or the all-weld metal deposited by a tubular cored electrode-flux combinationsThe symbol in Table 5 indicates the chemical composition of the solid wire electrode and includes an indication of characteristic alloying elements.The symbol in Table 6 indicates the chemical composition of the all-weld metal deposited by a tubular cored electrode-flux combination carried out according to Table 7.The chemical composition of the weld metal is dependent on the chemical composition of the solid wire electrode or tubular cored electrode and the metallurgical behaviour of the flux (see EN 760).7E N 756:2004 (E )8T a b l e 5 — C h e m i c a l c o m p o s i t i o n o f s o l i d w i r e e l e c t r o d e s f o r s u b m e r g e d a r c w e l d i n gC h e m i c a l c o m p o s i t i o n (%) (m /m )ab cS y m b o lC S i M nPS M o N i C rC uS Z a n y o t h e r a g r e e d c o m p o s i t i o n S 10,05 t o 0,150,150,35 t o 0,600,0250,0250,150,150,150,30S 20,07 t o 0,150,150,80 t o 1,300,0250,0250,150,150,150,30S 30,07 t o 0,150,151,30 t o 1,750,0250,0250,150,150,150,30S 40,07 t o 0,150,151,75 t o 2,250,0250,0250,150,150,150,30S 1S i 0,07 t o 0,150,15 t o 0,400,35 t o 0,600,0250,0250,150,150,150,30S 2S i 0,07 t o 0,150,15 t o 0,400,80 t o 1,300,0250,0250,150,150,150,30S 2S i 20,07 t o 0,150,40 t o 0,600,80 t o 1,300,0250,0250,150,150,150,30S 3S i 0,07 t o 0,150,15 t o 0,401,30 t o 1,850,0250,0250,150,150,150,30S 4S i 0,07 t o 0,150,15 t o 0,401,85 t o 2,250,0250,0250,150,150,150,30S 1M o 0,05 t o 0,150,05 t o 0,250,35 t o 0,600,0250,0250,45 t o 0,650,150,150,30S 2M o 0,07 t o 0,150,05 t o 0,250,80 t o 1,300,0250,0250,45 t o 0,650,150,150,30S 3M o 0,07 t o 0,150,05 t o 0,251,30 t o 1,750,0250,0250,45 t o 0,650,150,150,30S 4M o 0,07 t o 0,150,05 t o 0,251,75 t o 2,250,0250,0250,45 t o 0,650,150,150,30S 2N i 10,07 t o 0,150,05 t o 0,250,80 t o 1,300,0200,0200,150,80 t o 1,200,150,30S 2N i 1,50,07 t o 0,150,05 t o 0,250,80 t o 1,300,0200,0200,151,20 t o 1,800,150,30S 2N i 20,07 t o 0,150,05 t o 0,250,80 t o 1,300,0200,0200,151,80 t o 2,400,150,30S 2N i 30,07 t o 0,150,05 t o 0,250,80 t o 1,300,0200,0200,152,80 t o 3,700,150,30S 2N i 1M o 0,07 t o 0,150,05 t o 0,250,80 t o 1,300,0200,0200,45 t o 0,650,80 t o 1,200,200,30S 3N i 1,50,07 t o 0,150,05 t o 0,251,30 t o 1,700,0200,0200,151,20 t o 1,800,200,30S 3N i 1M o 0,07 t o 0,150,05 t o 0,251,30 t o 1,800,0200,0200,45 t o 0,650,80 t o 1,200,200,30S 3N i 1,5M o 0,07 t o 0,150,05 t o 0,251,20 t o 1,800,0200,0200,30 t o 0,501,20 t o 1,800,200,30S 2N i 1C u 0,08 t o 0,120,15 t o 0,350,70 t o 1,200,0200,0200,150,65 t o 0,900,400,40 t o 0,65S 3N i 1C u 0,05 t o 0,150,15 t o 0,401,20 t o 1,700,0250,0250,150,60 t o 1,200,150,30 t o 0,60a F i n i s h e d p r o d u c t c h e m i c a l c o m p o s i t i o n , C u i n c l u s i v e o f c o p p e r c o a t i n g , A l ≤ 0,030 %.b S i n g l e v a l u e s s h o w n i n t h e T a b l e m e a n m a x i m u m v a l u e s .c T h e r e s u l t s s h a l l b e r o u nde d t o t h e s a m e n u m b e r of s ig n i f i c a n t f i g u r e s a s i n th e s p e ci f i e d v a l u e u s i n g t h e r u l e s i n a c c o r d a n c e w i t h a n n e x B , R u l e A o f I S O 31-0:1992.EN 756:2004 (E)9Table 6 — Chemical composition of the all-weld metal deposited by a tubular cored electrode-fluxcombination Chemical composition % (m/m)a bcSymbolMn Ni Mo CuT21,4--0,3T31,4 to 2,0--0,3T2Mo 1,4-0,3 to 0,60,3T3Mo 1,4 to 2,0-0,3 to 0,60,3T2Ni11,40,6 to 1,2-0,3T2Ni1,51,61,2 to 1,8-0,3T2Ni21,41,8 to 2,6-0,3T2Ni31,42,6 to 3,8-0,3T3Ni11,4 to 2,00,6 to 1,2-0,3T2Ni1Mo 1,40,6 to 1,20,3 to 0,60,3T2Ni1Cu 1,40,8 to 1,2-0,3 to 0,6TZany other agreed compositiona If not specified Mo ≤ 0,2 %, Ni ≤ 0,5 %, Cr ≤ 0,2 %, V ≤ 0,08 %, Nb ≤ 0,05 %, C 0,03 % to 0,15 %, Si ≤ 0,8 %, S ≤ 0,025 %,P ≤ 0,025 %.b Single values shown in the Table mean maximum values.cThe results shall be rounded to the same number of significant figures as in the specified value using the rules in accordance with annex B, Rule A of ISO 31-0:1992.5 Mechanical tests5.1 Multi run techniqueTensile and impact tests and any required retests shall be carried out on weld metal in the as-welded condition using an all-weld metal test assembly type 3 according to EN 1597-1 using 4,0 mm or 3,2 mm (3,0 mm; 2,8 mm)diameter electrodes which ever is the larger size being supplied.Welding conditions (single electrode welding) and details of the test assembly shall be selected from Table 7.Preheating is not required; welding may start from room temperature.The interpass temperature shall be measured using temperature indicator crayons, surface thermometers or thermocouples (see EN ISO 13916).The interpass temperature shall not exceed the interpass temperature indicated in Table 7. If, after any pass, the interpass temperature is exceeded, the test assembly shall be cooled in air to a temperature within the indicated range.Table 7 — Welding conditions for multi run single wire weldingSolid wire electrode diameter (mm)Cored wire electrode diameter(mm)Conditionsa2,8 to 3,24,03,0 to 3,24,0Length of weld deposit (mm)min. 350min. 350min. 350min. 350Type of current direct current bWelding current (A)440 ± 20580 ± 20480 ± 20550 ± 20Welding voltage (V)27 ± 129 ± 130 ± 130 ± 1Welding speed (mm/min)400 ± 50550 ± 50450 ± 50450 ± 50Interpass temperature (°C) (no preheat)150 ± 25150 ± 25150 ± 25150 ± 25Electrode extension (mm)30 ± 530 ± 530 ± 530 ± 5aIf alternating current and direct current operations are claimed; test welding shall be carried out using alternatingcurrent only.bDirect current welding polarity shall follow the recommendation of the manufacturer.EN 756:2004 (E)5.2 Two run techniqueTensile and impact tests and any required retests shall be carried out on weld metal in the as-welded condition using a test assembly type 4 according to EN 1597-2. Welding conditions shall be within the range recommended by the manufacturer and shall be recorded to demonstrate compliance with this standard.6 Chemical analysisChemical analysis shall be performed on specimens of the solid wire electrode or on any suitable all-weld metal test specimen deposited by the electrode-flux combination. In case of dispute specimens in accordance with EN ISO 6847 shall be used. Any analytical technique can be used, but in case of dispute reference shall be made to established published methods.NOTE See Bibliography.7 Technical delivery conditionsTechnical delivery conditions shall meet the requirements in EN ISO 544.8 DesignationThe designation of the solid wire electrode and the electrode-flux combination shall follow the principle given in the examples below:EXAMPLE 1 A wire-flux combination for submerged arc welding for multi run technique deposits a weld metal with a minimum yield strength of 460 MPa (46) and a minimum average impact energy of 47 J at -30°C (3) produced with an aluminate-basic flux (AB) and a solid wire electrode S2 is designated:Wire-flux combination EN 756 - S 46 3 AB S2where:EN 756= standard numberS= submerged arc welding (see 4.1)46= tensile properties (see Table 1)3= impact properties (see Table 3)AB= type of welding flux (see Table 4)S2= chemical composition (see Table 5)EXAMPLE 2 A wire-flux combination for submerged arc welding using two run technique demonstrated in accordance with the manufacturer's recommendation in a parent metal with minimum yield strength 420 MPa (4T) achieving a weld metal with transverse tensile strength > 520 MPa and impact energy 47J at -20°C (2) with an aluminate-basic flux (AB) and a solid wire electrode S2Mo is designated:Wire-flux combination EN 756 - S 4T 2 AB S2Mowhere:EN 756= standard number;S= submerged arc welding (see 4.1)4T= tensile properties (see Table 2)2= impact properties (see Table 3)AB= type of welding flux (see Table 4)S2Mo= chemical composition (see Table 5)10EN 756:2004 (E)EXAMPLE 3 A solid wire electrode complying with the chemical requirement of S2Mo in Table 5 is designated: Solid wire electrode EN 756 - S2MoEXAMPLE 4 A tubular cored electrode-flux combination for submerged arc welding for multi run technique deposits a weld metal with a minimum yield strength of 420 MPa (42) and a minimum average impact energy of 47 J at -20°C (2) produced with an aluminate-basic flux (AB) and the all-weld metal chemical composition T3Mo, is designated:Tubular cored electrode-flux combination EN 756 - S 42 2 AB T3Mowhere:EN 756= standard numberS= submerged arc welding (see 4.1)42= tensile properties (see Table 1)2= impact properties (see Table 3)AB= type of welding flux (see Table 4)T3Mo= chemical composition (see Table 6)11EN 756:2004 (E)12BibliographyHandbuch für das Eisenhüttenlaboratorium, VdEh, Düsseldorf.BS 6200-3, Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Summary of methods. CR 10261, ECISS Information Circular 11 - Iron and steel - Review of available methods of chemical analysis.blankBS EN 756:2004BSI389 Chiswick High Road London W4 4ALBSI —British Standards InstitutionBSI is the independent national body responsible for preparingBritish Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users ofBritish Standards should make sure that they possess the latest amendments or editions.Tel:+44+44(0)2089967400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:+44(0)2089969001.Fax:+44(0)2089967001. Email:orders@. 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Dimensions: [mm]Scale - 5:174404054047BC74404054047T e m p e r a t u r eT pT L74404054047Cautions and Warnings:The following conditions apply to all goods within the product series of WE-LQS of Würth Elektronik eiSos GmbH & Co. KG:General:•This electronic component is designed and manufactured for use in general electronic equipment.•Würth Elektronik must be asked for written approval (following the PPAP procedure) before incorporating the components into any equipment in fields such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc. where higher safety and reliability are especially required and/or if there is the possibility of direct damage or human injury.•Electronic components that will be used in safety-critical or high-reliability applications, should be pre-evaluated by the customer. •The component is designed and manufactured to be used within the datasheet specified values. If the usage and operation conditions specified in the datasheet are not met, the wire insulation may be damaged or dissolved.•Do not drop or impact the components, the component may be damaged.•Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth Elektronik does not warrant any customer qualified product characteristics beyond Würth Elektroniks’ specifications, for its validity and sustainability over time.•The responsibility for the applicability of the customer specific products and use in a particular customer design is always within the authority of the customer. All technical specifications for standard products also apply to customer specific products.Product specific:Soldering:•The solder profile must comply with the technical product specifications. All other profiles will void the warranty.•All other soldering methods are at the customers’ own risk.•Strong forces which may affect the coplanarity of the components’ electrical connection with the PCB (i.e. pins), can damage the part, resulting in avoid of the warranty.Cleaning and Washing:•Washing agents used during the production to clean the customer application might damage or change the characteristics of the wire insulation, marking or plating. Washing agents may have a negative effect on the long-term functionality of the product.•Using a brush during the cleaning process may break the wire due to its small diameter. Therefore, we do not recommend using a brush during the PCB cleaning process.Potting:•If the product is potted in the customer application, the potting material may shrink or expand during and after hardening. Shrinking could lead to an incomplete seal, allowing contaminants into the core. Expansion could damage the components. We recommend a manual inspection after potting to avoid these effects.Storage Conditions:• A storage of Würth Elektronik products for longer than 12 months is not recommended. Within other effects, the terminals may suffer degradation, resulting in bad solderability. Therefore, all products shall be used within the period of 12 months based on the day of shipment.•Do not expose the components to direct sunlight.•The storage conditions in the original packaging are defined according to DIN EN 61760-2.•The storage conditions stated in the original packaging apply to the storage time and not to the transportation time of the components. Packaging:•The packaging specifications apply only to purchase orders comprising whole packaging units. If the ordered quantity exceeds or is lower than the specified packaging unit, packaging in accordance with the packaging specifications cannot be ensured. Handling:•Violation of the technical product specifications such as exceeding the nominal rated current will void the warranty.•Applying currents with audio-frequency signals may result in audible noise due to the magnetostrictive material properties.•The temperature rise of the component must be taken into consideration. The operating temperature is comprised of ambient temperature and temperature rise of the component.The operating temperature of the component shall not exceed the maximum temperature specified.These cautions and warnings comply with the state of the scientific and technical knowledge and are believed to be accurate and reliable.However, no responsibility is assumed for inaccuracies or incompleteness.Würth Elektronik eiSos GmbH & Co. KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyCHECKED REVISION DATE (YYYY-MM-DD)GENERAL TOLERANCE PROJECTIONMETHODChrB.001.0062022-10-01DIN ISO 2768-1mDESCRIPTIONWE-LQS SMT Semi-ShieldedPower Inductor ORDER CODE74404054047SIZE/TYPE BUSINESS UNIT STATUS PAGEImportant NotesThe following conditions apply to all goods within the product range of Würth Elektronik eiSos GmbH & Co. KG:1. General Customer ResponsibilitySome goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas. These statements about suitability are based on our knowledge and experience of typical requirements concerning the areas, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. The responsibility for the applicability and use in a particular customer design is always solely within the authority of the customer. 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Best Care and AttentionAny product-specific notes, cautions and warnings must be strictly observed. Any disregard will result in the loss of warranty.4. Customer Support for Product SpecificationsSome products within the product range may contain substances which are subject to restrictions in certain jurisdictions in order to serve specific technical requirements. Necessary information is available on request. In this case the field sales engineer or the internal sales person in charge should be contacted who will be happy to support in this matter.5. Product R&DDue to constant product improvement product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard inform about minor and major changes. In case of further queries regarding the PCN, the field sales engineer or the internal sales person in charge should be contacted. The basic responsibility of the customer as per Section 1 and 2 remains unaffected.6. Product Life CycleDue to technical progress and economical evaluation we also reserve the right to discontinue production and delivery of products. As a standard reporting procedure of the Product Termination Notification (PTN) according to the JEDEC-Standard we will inform at an early stage about inevitable product discontinuance. According to this we cannot guarantee that all products within our product range will always be available. Therefore it needs to be verified with the field sales engineer or the internal sales person in charge about the current product availability expectancy before or when the product for application design-in disposal is considered. The approach named above does not apply in the case of individual agreements deviating from the foregoing for customer-specific products.7. Property RightsAll the rights for contractual products produced by Würth Elektronik eiSos GmbH & Co. KG on the basis of ideas, development contracts as well as models or templates that are subject to copyright, patent or commercial protection supplied to the customer will remain with Würth Elektronik eiSos GmbH & Co. KG. Würth Elektronik eiSos GmbH & Co. KG does not warrant or represent that any license, either expressed or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right relating to any combination, application, or process in which Würth Elektronik eiSos GmbH & Co. KG components or services are used.8. General Terms and ConditionsUnless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms and Conditions of Würth Elektronik eiSos Group”, last version available at .Würth Elektronik eiSos GmbH & Co. KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyCHECKED REVISION DATE (YYYY-MM-DD)GENERAL TOLERANCE PROJECTIONMETHODChrB.001.0062022-10-01DIN ISO 2768-1mDESCRIPTIONWE-LQS SMT Semi-ShieldedPower Inductor ORDER CODE74404054047SIZE/TYPE BUSINESS UNIT STATUS PAGE。
欧洲标准EN10346EN 10346 连续热浸镀钢带产品技术交货条件CEN欧洲标准化委员会1.范围本标准规定了厚度在0.35-3.0mm（除非另有协议）的冷成型用低碳钢、建筑用钢、冷成型用高强钢连续热浸镀纯锌镀层（Z）、锌铁合金镀层(ZF)、锌铝合金镀层(ZA)、铝锌合金镀层(AZ)以及铝硅镀层产品(AS)和冷成型用多相钢连续热浸镀纯锌镀层(Z)、锌铁合金镀层(ZF)、锌铝合金镀层(ZA)产品交货技术条件。
这里厚度指涂镀后交货产品的最终厚度。
本标准适用于所有宽度的钢带和宽度≥600mm的钢带剪切而成的钢板及宽度<600mm 的钢带剪切而成的定尺产品。
注1：镀（纯）铝产品可以接受，但不在本标准规定范围之内。
注2：如果在询价和订货时有协议，本标准也适用于厚度＜0.35mm和>3.0mm 的连续热浸镀镀层扁平材产品。
在这种情况下，产品的力学性能、镀层附着性和表面质量要求都应在订货或询价时进行协商。
注3：本标准规定的产品主要用于那些对冷成形性能、高强度、低屈服强度以及耐蚀性能要求较高的场合。
产品的耐蚀性与镀层厚度即镀层重量有关（见7.3.2）。
本标准规定的产品可用于EN 10169-1、EN10169-2、EN10169-3中规定的用于建筑和一般工程用的有机涂层钢带的基板。
注4：如果在询价和订货时有协议，本标准也适用于其他连续热浸镀热轧钢带产品（与EN10149-2一致）。
2.引用标准下列文件中的条款通过本标准的引用而成为本标准的条款。
凡是注日期的引用文件仅该版本适用于本标准。
凡是不注日期的引用文件，其最新版本适用于本标准（包括修改单）。
EN 10002-1 金属材料-拉伸试验-第1部分：室温实验方法EN 10020:2000 钢牌号定义和分类EN 10021:2006 钢及钢产品交货一般技术要求EN 10049 金属板带产品表面粗糙度平均值Ra和峰数Rpc的测量。
EN 10079 钢产品分类EN 10143 连续热浸镀金属镀层钢板和钢带—尺寸外形及允许偏差EN 10204：2004 金属产品—检验文件的类型EN 10325 钢-热处理效应屈服强度增加的测定（烘烤硬化系数）ISO 10013 金属材料-钢板和钢带-塑性应变比的测定ISO 10275 金属材料-钢板和钢带-拉伸应变硬化系数的测定3.术语和定义本标准除采用EN 10020:2000、EN 10021:2006、EN 10079：2007、EN 10204:2004中的术语和定义外，还采用如下术语和定义：注钢铁防护的一般导则见EN ISO 14713.3.1 热浸镀锌镀层（Z）将经过预处理的钢带浸入到熔融的锌液中获得的锌镀层，熔融锌液中锌含量应不小于99%。
General DescriptionThe MAX481, MAX483, MAX485, MAX487–MAX491, andMAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and onereceiver. The MAX483, MAX487, MAX488, and MAX489feature reduced slew-rate drivers that minimize E MI andreduce reflections caused by improperly terminated cables,thus allowing error-free data transmission up to 250kbps.The driver slew rates of the MAX481, MAX485, MAX490,MAX491, and MAX1487 are not limited, allowing them totransmit up to 2.5Mbps.These transceivers draw between 120µA and 500µA ofsupply current when unloaded or fully loaded with disableddrivers. Additionally, the MAX481, MAX483, and MAX487have a low-current shutdown mode in which they consumeonly 0.1µA. All parts operate from a single 5V supply.Drivers are short-circuit current limited and are protectedagainst excessive power dissipation by thermal shutdowncircuitry that places the driver outputs into a high-imped-ance state. The receiver input has a fail-safe feature thatguarantees a logic-high output if the input is open circuit.The MAX487 and MAX1487 feature quarter-unit-loadreceiver input impedance, allowing up to 128 MAX487/MAX1487 transceivers on the bus. Full-duplex communi-cations are obtained using the MAX488–MAX491, whilethe MAX481, MAX483, MAX485, MAX487, and MAX1487are designed for half-duplex applications.________________________Applications Low-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks__Next Generation Device Features o For Fault-Tolerant Applications MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4Unit Load, +3.3V, RS-485 Transceiver MAX3440E–MAX3444E: ±15kV ESD-Protected,±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 Transceivers o For Space-Constrained Applications MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps,Profibus RS-485/RS-422 Transceivers MAX3362: +3.3V, High-Speed, RS-485/RS-422Transceiver in a SOT23 Package MAX3280E–MAX3284E: ±15kV ESD-Protected,52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422,True Fail-Safe Receivers MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,SOT23, RS-485/RS-422 Transmitters o For Multiple Transceiver Applications MAX3030E–MAX3033E: ±15kV ESD-Protected,+3.3V, Quad RS-422 Transmitters o For Fail-Safe Applications MAX3080–MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422Transceiverso For Low-Voltage ApplicationsMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E: +3.3V Powered, ±15kVESD-Protected, 12Mbps, Slew-Rate-Limited,True RS-485/RS-422 Transceivers For pricing, delivery, and ordering information, please contact Maxim Direct at1-888-629-4642, or visit Maxim Integrated’s website at .______________________________________________________________Selection Table19-0122; Rev 10; 9/14PARTNUMBERHALF/FULL DUPLEX DATA RATE (Mbps) SLEW-RATE LIMITED LOW-POWER SHUTDOWN RECEIVER/DRIVER ENABLE QUIESCENT CURRENT (μA) NUMBER OF RECEIVERS ON BUS PIN COUNT MAX481Half 2.5No Yes Yes 300328MAX483Half 0.25Yes Yes Yes 120328MAX485Half 2.5No No Yes 300328MAX487Half 0.25Yes Yes Yes 1201288MAX488Full 0.25Yes No No 120328MAX489Full 0.25Yes No Yes 1203214MAX490Full 2.5No No No 300328MAX491Full 2.5No No Yes 3003214MAX1487 Half 2.5No No Yes 2301288Ordering Information appears at end of data sheet.找电子元器件上宇航军工MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-LimitedRS-485/RS-422 TransceiversPackage Information For the latest package outline information and land patterns, go to . Note that a “+”, “#”, or “-”in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.16Low-Power, Slew-Rate-Limited RS-485/RS-422 TransceiversMAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-100017©2014 Maxim Integrated Products, Inc.Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.。
