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America AISI AISIA-8 Tool Steels Alloy and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AISIA-8 / AISI A-8
Category Grade Standard Region/Area Standard Content
Metals AISI A-8 ASTM A681 America Tool Steels Alloy

Chemical composition(mass fraction)(wt.%) of the AISI A-8

Element Min Max Similar
W 1.0000 1.5000 -
Si 0.7500 1.1000 -
S - 0.0300 -
P - 0.0300 -
Ni+Cu - 0.7500 -
Mo 1.1500 1.6500 -
Mn 0.2000 0.5000 -
Cr 4.7500 5.5000 -
C 0.5000 0.6000 -

Mechanical Properties of steel grade AISI A-8

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)
726 (≥) 489 (≥) 22 41 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade AISI A-8

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 - -     0.31 -  
455 538 - 44.3 141   -  
183 - 23 41.2   142 212

Heat Treatment of steel grade AISI A-8

Heat treated : 1485°C - 1293°C

Technological Curves of steel grade AISI A-8

Cross Reference Table (Equivalent Grade) of AISI A-8

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