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AISI H-21

America AISI AISIH-21 Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AISIH-21 / AISI H-21
Category Grade Standard Region/Area Standard Content
Metals AISI H-21 SAE J 438 America Tool and die steels

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

Element Min Max Similar
W 8.5000 10.0000 -
V 0.3000 0.6000 -
Si 0.1500 0.5000 -
S - 0.0300 -
P - 0.0300 -
Ni+Cu - 0.7500 -
Mn 0.1500 0.4000 -
Cr 3.0000 3.7500 -
C 0.2600 0.3600 -
W 8.7500 10.0000 -
V 0.3000 0.5000 -
Si 0.1500 0.3000 -
Mn 0.2000 0.4000 -
Cr 3.0000 3.7500 -
C 0.3000 0.4000 -

Mechanical Properties of steel grade AISI H-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)
593 (≥) 586 (≥) 11 43 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade AISI H-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
42 - -     0.21 -  
754 258 - 21.3 121   -  
547 - 43 12.2   414 231

Heat Treatment of steel grade AISI H-21

Heat treated : 1572°C - 1373°C

Technological Curves of steel grade AISI H-21

Cross Reference Table (Equivalent Grade) of AISI H-21

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