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International ISO DAC 机械弹簧钢丝-第3部分:油淬火和回火钢丝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DAC / DAC
Category Grade Standard Region/Area Standard Content
Metals DAC ISO 8458-3 International 机械弹簧钢丝-第3部分:油淬火和回火钢丝

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

Element Min Max Similar
Si 1.2000 1.6000 -
S - 0.0300 -
P - 0.0300 -
Mn 0.5000 0.8000 -
Cr 0.5500 0.8500 -
C 0.5100 0.5900 -

Mechanical Properties of steel grade DAC

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)
337 (≥) 457 (≥) 22 11 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade DAC

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
23 - -     0.23 -  
862 521 - 44.3 341   -  
259 - 42 14.2   231 241

Heat Treatment of steel grade DAC

Heat treated : 1719°C - 1357°C

Technological Curves of steel grade DAC

Cross Reference Table (Equivalent Grade) of DAC

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