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Grade Ck85
Germany W-Nr. 1.1269
Corresponding Standard DIN 17222-1979
Cold Rolled Steel Strips for Springs Technical Condition of Delivery
Classification Carbon Steel
Ck85 Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value 0.8 0.15 0.45 - -
Maximum Value 0.9 0.35 0.65 0.035 0.035
Ck85 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) ≤670 ≥11 HV**
≤200
t≤2.5**** Cold rolled, quenching and tempering (H+A) ***
1400~1950		 415~580
t≤2.5 Quenching ≥730
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17222-1979
Grade
Germany W-Nr.
DIN EN 10132-4-2000(+AC:2002)
Grade
Germany W-Nr.
Approximate Comparison Table Spring Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS14 BS EN/BS
85 U20852 SUP3 SUP3 SPS1 1086 G10860 Type DC Ck85
C85S 		1.1269
1.1269 		XC85 C85S 1.1269 85A ≈1774 060A86
CS80

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