Vertragspartner erhalten die Norm nur über die zuständige Beschaffungsabteilung.
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N o r m v o r A n w e n d u n g a u f A k t u a l i t ät p r üf e n / C h e c k s t a n d a r d f o r c u r r e n t i s s u e p r i o r t o u s a g e .
T 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 .
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TL 520 45: 1998-12
D
2.6
Obligation for technical engineering approval The parts are subject to technical engineering approval.
3 Material requirements 3.1
Material
Polyether-polyurethane foam: free of fully or partially halogenated propellants and aller-gens.
Component A: formulated polyether polyol Component B: modified MDI
3.2 Appearance
The surface must be free of voids, inclusions,cracks or other flaws that impair usability.3.3 Color According to drawing and/or color chart 3.4 Grain
According to drawing and/or grain chart 4 Characteristics requirements 4.1
Shore hardness "L"acc. to PV 39314.1.1 As-received condition
75 ± 8, unless otherwise stated in the drawing
4.1.2
After aging at elevated temperature 504 h/105° C
4.1.3 After environmental cycle test 2)4.1.4
After weathering test
acc. to DIN 75 220–Z–IN1–T 15 cycles
35
+− compared to the mean value in as-received condition
35
+− compared to the mean value in as-received condition
4.2
Abrasion acc. to Veslic 3)acc. to DIN 53 339,
but with black felt 0.44 g/cm³
35
+− compared to the mean value in as-received condition
4.2.1 As-received condition
4.2.1.1 After 5,000 dry strokes
No loss of grain or opening of the surface
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TL 520 45: 1998-12
D 4.2.1.2 After 3,000 strokes with acidic sweat
solution acc. to DIN 54 020No loss of grain or opening of the surface
4.2.2 After aging at elevated temperature
4.2.2.1 After 5,000 dry strokes No loss of grain or opening of the surface
4.2.3 After environmental cycle test 2)
4.2.3.1 After 5,000 dry strokes No loss of grain or opening of the surface
4.2.4 After weathering test
acc. to DIN 75 220–Z–IN1–T
15 cycles
4.2.4.1 After 500 dry strokes No loss of grain or opening of the surface
4.3 Change in appearance
4.3.1 After aging at elevated temperature
504 h/105° C There must not be any changes on the molded
part compared with as-received condition, e.g.
deformation, blooming, pore formation or void
marks.
4.3.2 After environmental cycle test 2)Acc. to section 4.3.1
4.3.3 After weathering test
acc. to DIN 75 220–Z–IN1–T
15 cycles Acc. to section 4.3.1
Fastness number Color change (dE*) 4) 4.4 Color change 4)
Gray-scale level
acc. to EN 20 105–A02
4.4.1 After aging at elevated temperature≥ 4≤ 1.7
4.4.2 After environmental cycle test≥ 4≤ 1.7
4.4.3 After weathering test 2)
acc. to DIN 75 220–Z–IN1–T
15 cycles≥ 4≤ 1.7
Slight changes in color or degree of glossiness
are permissible, a color shift is not.
Evaluation possible according to the released
sample.
