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Japan DAIDO DH31-EX 热间工具钢(压铸) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DH31-EX / DH31-EX
Category Grade Standard Region/Area Standard Content
Metals DH31-EX DAIDO D-C D Japan 热间工具钢(压铸)

Chemical composition(mass fraction)(wt.%) of the DH31-EX

Element Min Max Similar

Mechanical Properties of steel grade DH31-EX

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)
231 (≥) 635 (≥) 21 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade DH31-EX

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
12 - -     0.22 -  
717 581 - 11.3 322   -  
998 - 22 21.2   411 222

Heat Treatment of steel grade DH31-EX

Heat treated : 1127°C - 1426°C

Technological Curves of steel grade DH31-EX

Cross Reference Table (Equivalent Grade) of DH31-EX

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