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America SAE HS-21 Special Purpose Alloys (Superalloys) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HS-21 / HS-21
Category Grade Standard Region/Area Standard Content
Metals HS-21 SAE J 467B America Special Purpose Alloys (Superalloys)

Chemical composition(mass fraction)(wt.%) of the HS-21

Element Min Max Similar
Ni - - 2.5000
Mo - - 5.5000
Fe - - 1.7500
Cr - - 27.0000
Co - - -
C - - 0.2500
B - - 0.0070

Mechanical Properties of steel grade HS-21

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)
887 (≥) 434 (≥) 34 44 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade HS-21

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
44 - -     0.13 -  
115 521 - 11.3 424   -  
515 - 32 42.2   114 221

Heat Treatment of steel grade HS-21

Heat treated : 1791°C - 1366°C

Technological Curves of steel grade HS-21

Cross Reference Table (Equivalent Grade) of HS-21

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