Vertragspartner erhalten die Norm nur über die B2B Lieferantenplattform …“.Confidential. All rights reserved. No part of this document may be transmitted or reproduced without the prior permission of a Standards Department of the Volkswagen Group.Contract partners shall obtain this standard only through the B2B supplier platform “”.© VOLKSWAGEN AGV e r s i o n - 09.06T h e E n g l i s h t r a n s l a t i o n i s b e l i e v e d t o b e a c c u r a t e .I n c a s e o f d i s c r e p a n c i e s t h e G e r m a n v e r s i o n s h a l l g o v e r n .N u m e r i c a l n o t a t i o n a c c o r d i n g t o I S O p r a c t i c e (s e e V W 01000).Page 2VW 50060-1: 2007-11coating3.3.2 SurfaceZinc electroplating and phosphate coating according to DIN EN 10152.Hot-dip galvanization according to DIN EN 10292. Phosphate coating according to separate agreement.3.4 EdgeappearanceCut edges (edge-trimmed).3.5 DimensionsFor uncoated and zinc electroplated material, dimensions according to DIN EN 10131; for hot-dip processed (hot-dip galvanized) material, dimensions according to DIN EN 10143.3.6 Chemical composition in weight percentSee Table 1 for uncoated and zinc electroplated material and Table 2 for hot-dip processed (hot-dip galvanized) material.Table 1 – Chemical composition, uncoated and zinc electroplatedMaterial C Si Mn P S Al total Cr + Mo Nb + Ti V BHC260X ≤ 0,14 ≤ 0,50 ≤ 1,6 ≤ 0,050≤ 0,0150,015 to≤ 0,80 ≤ 0,15 ≤ 0,20 ≤ 0,0050,10HC300X ≤ 0,14 ≤ 0,50 ≤ 1,8 ≤ 0,050≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0050,10HC340X ≤ 0,14 ≤ 0,50 ≤ 2,0 ≤ 0,050≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5HC450X ≤ 0,18 ≤ 0,80 ≤ 2,2 ≤ 0,050≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5HC600X 1)≤ 0,20 ≤ 0,80 ≤ 2,5 ≤ 0,080≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5HC660X ≤ 0,23 ≤ 0,80 ≤ 2,5 ≤ 0,080≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0052,01) Provisional characteristic values; standard production suitability shall be ensured prior to use.Table 2 – Chemical composition, hot-dip processed (hot-dip galvanized)Material C Si Mn P S Al total Cr + Mo Nb + Ti V BHC260XD ≤ 0,14 ≤ 0,50 ≤ 1,6 ≤ 0,050≤ 0,0150,015 to≤ 0,80 ≤ 0,15 ≤ 0,20 ≤ 0,0050,10HC300XD ≤ 0,14 ≤ 0,50 ≤ 2,0 ≤ 0,050≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0050,10HC340XD ≤ 0,14 ≤ 0,50 ≤ 2,2 ≤ 0,050≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5HC450XD ≤ 0,18 ≤ 0,80 ≤ 2,5 ≤ 0,050≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5HC600XD ≤ 0,20 ≤ 0,80 ≤ 2,5 ≤ 0,080≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5HC660XD ≤ 0,23 ≤ 0,80 ≤ 2,7 ≤ 0,080≤ 0,0150,015 to≤ 1,0 ≤ 0,15 ≤ 0,20 ≤ 0,0051,5Page 3VW 50060-1: 2007-11 3.7 MechanicalpropertiesSee Table 3 for uncoated and zinc electroplated material and Table 4 for hot-dip processed (hot-dip galvanized) material.Determination of the mechanical-technological properties perpendicular to the rolling direction according to DIN EN 10002-1, specimen shape 2 (20 mm ×80 mm), relating to specimen cross sections without coatings.ISO 10275 applies to the determination of the tensile strain hardening exponent.Table 3 – Mechanical properties, uncoated and zinc electroplatedMaterial 0,2%offsetproofstressR P0,2MPaTensilestrengthR mMPaElongation atbreakA80 mm%Tensile strainhardeningexponentnYield pointincreaseBH2MPaHC260X 260 to 340 450 to 550 ≥ 27 ≥ 0,17 ≥ 30 HC300X 300 to 380 500 to 600 ≥ 24 ≥ 0,15 ≥ 30 HC340X 340 to 420 590 to 700 ≥ 20 ≥ 0,14 ≥ 30 HC450X 450 to 560 780 to 900 ≥ 15 - ≥ 30 HC600X 1)600 to 750 980 to 1 100 ≥ 10 - ≥ 30 HC660X 660 to 810 980 to 1 130 ≥ 10 - ≥ 30 1) Provisional characteristic values; standard production suitability shall be ensured prior to use.Table 4 – Mechanical properties, hot-dip processed (hot-dip galvanized)Material 0,2%offsetproofstressR P0,2MPaTensilestrengthR mMPaElongation atbreakA80 mm%Tensile strainhardeningexponentnYield pointincreaseBH2MPaHC260XD 260 to 340 450 to 550 ≥ 27 ≥ 0,17 ≥ 30HC300XD 300 to 380 500 to 600 ≥ 24 ≥ 0,15 ≥ 30HC340XD 340 to 420 590 to 700 ≥ 20 ≥ 0,14 ≥ 30HC450XD 450 to 560 780 to 900 ≥ 14 - ≥ 30HC600XD 600 to 750 980 to 1 100 ≥ 10 - ≥ 30HC660XD 660 to 780 980 to 1 130 ≥ 10 - ≥ 304 JoiningThe joining concept of assemblies with high-strength multiphase steels shall be agreed upon with the appropriate experts at an early stage. The applicable standards, process specifications and test specifications for joining sheet steel shall be taken into consideration.4.1 WeldingAs a general rule, welding of cold-rolled dual-phase steels by resistance spot welding, gas-shielded arc welding, stud welding, and laser welding is possible without preheating.Depending on the joining situation (sheet thicknesses, joining partners, component), these steels tend to harden in the welding zone and in the heat-affected zone.The available processing window for resistance spot welding is smaller compared to that for soft deep-drawing grade steel, and higher electrode forces are recommended.Page 4VW 50060-1: 2007-11If multiphase steels of different quality are welded together, additional weldability constraints may exist.The welding suitability shall be documented for the relevant sheet pairing by welding tests.4.2 MIG and laser brazingCold-rolled dual-phase steels can be joined by MIG or laser brazing using copper-based materials. Depending on the joining situation (sheet thicknesses, method, joining partners, component), these steels tend to a greater or lesser extent to produce local alterations in the base material properties in the brazed area.Generally, an additional copper-silicon-based material (Cu 6560/CuSi3Mn1) according to DIN EN 14640 (previously CuSi3 according to DIN 1733-1) is used.Depending on the joining geometry, the wetting and gap filling is different. In addition, the bearing cross-section of the brazed joint is typically reduced in the case of MIG and laser brazing, which significantly influences the fracture behavior under quasistatic loads. Therefore, depending on the fracture position, sheet thickness, and sheet grade, a distinction can be made between strength brazing and joint brazing.─Strength brazing: Fracture occurs in the base material─Joint brazing: Fracture occurs in the joint or at the transition point between joint and base materialDepending on the application, these different brazings shall be tested separately.4.3 BondingStructurally bonded, hot-dip galvanized sheets can exhibit isolated zinc separations under load. The associated decrease in the joint strength and energy absorption should be taken into account in the design of the components.standards15 ReferencedQP A001 Prelube, Hot Melt, Blank Washing Oil, Drawing Oil, Slushing Oil (General);Quality RequirementsVW 01155 Vehicle Supply Parts; Approval of First Supply and ChangesVW 91101 Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating Fluids; Avoidance of Hazardous SubstancesDIN EN 10002-1 Metallic Materials – Tensile Testing – Part 1: Method of Testing at Ambient TemperatureDIN EN 10131 Cold Rolled Uncoated and Zinc or Zinc-Nickel Electrolytically Coated Low Carbon and High Yield Strength Steel Flat Products for Cold Forming –Tolerances on Dimensions and ShapeDIN EN 10143 Continuously Hot-Dip Coated Steel Sheet and Strip – Tolerances on Dimensions and ShapeDIN EN 10152 Electrolytically Zinc Coated Cold Rolled Steel Flat Products – Technical Delivery ConditionsDIN EN 10268 Cold Rolled Steel Flat Products with High Yield Strength for Cold Forming – Technical Delivery ConditionsDIN EN 10292 Continuously Hot-Dip Coated Strip and Sheet of Steels with High Yield Strength for Cold Forming – Technical Delivery ConditionsISO 10275 Metallic Materials – Sheet and Strip – Determination of Tensile Strain Hardening Exponent1 In this Section, terminological inconsistencies may occur as the original titles are used.Page 5VW 50060-1: 2007-11Appendix A (informative)A.1 Comparison of steel descriptionsSee Table A.1. For drawing entries, a description based on minimum tensile strength is not permitted.Table A.1Description according to VW 50060-1 with regard to the minimum yield point R p0,2Description with regard to minimum tensile strength R mHC260X HCT450X HC300X HCT500X HC340X HCT590X HC450X HCT780X HC600X HCT980X HC660X HCT980X-HY (high yield point)HC300XD HCT500XD HC340XD HCT590XD HC450XD HCT780XD HC600XD HCT980XD HC660XD HCT980XD-HY (high yield point)。
