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A297 Grade HD

America ASTM A297GradeHD 一般用耐热铬铁与镍铬铁合金钢铸件规格 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A297GradeHD / A297 Grade HD
Category Grade Standard Region/Area Standard Content
Metals A297 Grade HD ASTM A297/A297M America 一般用耐热铬铁与镍铬铁合金钢铸件规格

Chemical composition(mass fraction)(wt.%) of the A297 Grade HD

Element Min Max Similar
Si - 2.0000 -
S - 0.0400 -
P - 0.0400 -
Ni 4.0000 7.0000 -
Mo - 0.5000 -
Mn - 1.5000 -
Cr 26.0000 30.0000 -
C - 0.5000 -

Mechanical Properties of steel grade A297 Grade HD

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)
272 (≥) 377 (≥) 44 33 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade A297 Grade HD

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
34 - -     0.23 -  
379 519 - 33.3 323   -  
832 - 31 41.2   122 243

Heat Treatment of steel grade A297 Grade HD

Heat treated : 1888°C - 1929°C

Technological Curves of steel grade A297 Grade HD

Cross Reference Table (Equivalent Grade) of A297 Grade HD

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