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China HB DD402 航空用高温合金热处理工艺 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DD402 / DD402
Category Grade Standard Region/Area Standard Content
Metals DD402 HB/Z 140 China 航空用高温合金热处理工艺

Chemical composition(mass fraction)(wt.%) of the DD402

Element Min Max Similar

Mechanical Properties of steel grade DD402

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)
295 (≥) 483 (≥) 23 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade DD402

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
43 - -     0.32 -  
158 156 - 33.3 421   -  
212 - 12 34.2   242 431

Heat Treatment of steel grade DD402

Heat treated : 1479°C - 1499°C

Technological Curves of steel grade DD402

Cross Reference Table (Equivalent Grade) of DD402

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