Delivery condition (strip,coil,sheet) |
Grade based on DIN Standard |
Hardened and tempered conditions |
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Hardness 29-55HRC |
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thickness |
Width |
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High carbon steel |
CK50,CK55, CK60,CK67, CK70,CK75,C75Cr1 |
0.15 |
8 |
Alloy spring steel |
50CrV4, 51CrV4, 60Si2Mn |
0.20 |
8 |
Stainless spring steel |
3Cr13-6Cr13 |
0.20 |
8 |
Edge process |
slit edge; both rounded; one side round, one side slit; square etc |
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Finish surface |
polished (blue, yellow, white, grey-blue, black, bright) or Nature etc |
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Tolerance |
thickness +/ |
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Physical Property |
tensile strength - 1200-1850N/mm2 |