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EU EN DM 机械弹簧钢丝 - 第1部分:专利的冷拉伸非合金弹簧钢丝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DM / DM
Category Grade Standard Region/Area Standard Content
Metals DM EN 10270-1 EU 机械弹簧钢丝 - 第1部分:专利的冷拉伸非合金弹簧钢丝

Chemical composition(mass fraction)(wt.%) of the DM

Element Min Max Similar

Mechanical Properties of steel grade DM

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)
762 (≥) 214 (≥) 32 21 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade DM

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
21 - -     0.41 -  
986 642 - 21.3 233   -  
678 - 24 21.2   132 114

Heat Treatment of steel grade DM

Heat treated : 1169°C - 1438°C

Technological Curves of steel grade DM

Cross Reference Table (Equivalent Grade) of DM

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