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America ASTM A681O2 Tool Steels Alloy and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A681O2 / A681 O2
Category Grade Standard Region/Area Standard Content
Metals A681 O2 ASTM A681 America Tool Steels Alloy

Chemical composition(mass fraction)(wt.%) of the A681 O2

Element Min Max Similar

Mechanical Properties of steel grade A681 O2

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)
212 (≥) 249 (≥) 11 24 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade A681 O2

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
32 - -     0.23 -  
355 886 - 32.3 212   -  
645 - 42 34.2   211 242

Heat Treatment of steel grade A681 O2

Heat treated : 1118°C - 1828°C

Technological Curves of steel grade A681 O2

Cross Reference Table (Equivalent Grade) of A681 O2

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