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America ASTM A681H12 Tool Steels Alloy and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A681H12 / A681 H12
Category Grade Standard Region/Area Standard Content
Metals A681 H12 ASTM A681 America Tool Steels Alloy

Chemical composition(mass fraction)(wt.%) of the A681 H12

Element Min Max Similar
W 1.0000 1.7000 -
V 0.2000 0.5000 -
Mo 1.2500 1.7500 -
Cr 4.7500 5.5000 -
P - 0.0300 -
S - 0.0300 -
Mn 0.2000 0.6000 -
Si 0.8000 1.2500 -
C 0.3000 0.4000 -
W 1.0000 1.7000 -
V 0.2000 0.5000 -
Si 0.8000 1.2500 -
S - 0.0300 -
P - 0.0300 -
Ni+Cu - 0.7500 -
Mo 1.2500 1.7500 -
Mn 0.2000 0.6000 -
Cr 4.7500 5.5000 -
C 0.3000 0.4000 -

Mechanical Properties of steel grade A681 H12

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)
595 (≥) 737 (≥) 24 33 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade A681 H12

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
23 - -     0.32 -  
353 936 - 21.3 443   -  
883 - 24 33.2   333 424

Heat Treatment of steel grade A681 H12

Heat treated : 1479°C - 1759°C

Technological Curves of steel grade A681 H12

Cross Reference Table (Equivalent Grade) of A681 H12

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