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Germany DIN Ck67 Cold Rolled Steel Strips for Springs; Technical Conditions of Delivery and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Ck67 / Ck 67
Category Grade Standard Region/Area Standard Content
Metals Ck 67 DIN 17222 Germany Cold Rolled Steel Strips for Springs; Technical Conditions of Delivery

Chemical composition(mass fraction)(wt.%) of the Ck 67

Element Min Max Similar

Mechanical Properties of steel grade Ck 67

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
222 (≥) 659 (≥) 21 22 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade Ck 67

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
24 - -     0.21 -  
431 412 - 13.3 113   -  
571 - 24 43.2   232 321

Heat Treatment of steel grade Ck 67

Heat treated : 1743°C - 1217°C

Technological Curves of steel grade Ck 67

Cross Reference Table (Equivalent Grade) of Ck 67

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