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America ASTM A681O7 Tool Steels Alloy and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A681O7 / A681 O7
Category Grade Standard Region/Area Standard Content
Metals A681 O7 ASTM A681 America Tool Steels Alloy

Chemical composition(mass fraction)(wt.%) of the A681 O7

Element Min Max Similar
W 1.0000 2.0000 -
V 0.1500 0.4000 -
Mo - 0.0300 -
Cr 0.3500 0.8500 -
P - 0.0300 -
S - 0.0300 -
Mn 0.2000 1.0000 -
Si 0.1000 0.6000 -
C 1.1000 1.3000 -
W 1.0000 2.0000 -
V 0.1500 0.4000 -
Si 0.1000 0.6000 -
S - 0.0300 -
P - 0.0300 -
Ni+Cu - 0.7500 -
Mo - 0.3000 -
Mn 0.2000 1.0000 -
Cr 0.3500 0.8500 -
C 1.1000 1.3000 -

Mechanical Properties of steel grade A681 O7

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)
334 (≥) 538 (≥) 24 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade A681 O7

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
41 - -     0.33 -  
614 683 - 13.3 332   -  
514 - 12 14.2   243 411

Heat Treatment of steel grade A681 O7

Heat treated : 1227°C - 1488°C

Technological Curves of steel grade A681 O7

Cross Reference Table (Equivalent Grade) of A681 O7

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