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Grade Ck101
Germany W-Nr. 1.1274
Old Grade
Corresponding Standard DIN 17222-1979
Cold Rolled Steel Strips for Springs Technical Condition of Delivery
Classification Carbon Steel
Ck101 Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value 0.95 0.15 0.4 - -
Maximum Value 1.05 0.35 0.6 0.035 0.035
Ck101 Mechanical Properties
thickness
t
mm		 Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
t≤3* Cold rolled and soft annealing (G) ≤690 ≥11 HV**
≤205
t≤2**** Cold rolled, quenching and tempering (H+A) ***
1500~2100		 445~620
t≤2 Quenching ≥750
1 Approximate Comparison Table
Japan United States Germany France Sweden United Kingdom
JIS AISI UNS DIN EN/DIN W-Nr. NF EN/NF SS14 BS EN/BS
SUP4 1095 G10950 Ck101 1.1274 XC100 1870 060A96
2 Approximate Comparison Table
Germany France European Standard United Kingdom
DIN EN/DIN NF EN/NF EN Numerical Grade BS EN/BS
Ck101 C100RR C100S 1.1274 CS95

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