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America AISI AISIA-9 Tool Steels Alloy and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AISIA-9 / AISI A-9
Category Grade Standard Region/Area Standard Content
Metals AISI A-9 ASTM A681 America Tool Steels Alloy

Chemical composition(mass fraction)(wt.%) of the AISI A-9

Element Min Max Similar
V 0.8000 1.4000 -
Si 0.9500 1.1500 -
S - 0.0300 -
P - 0.0300 -
Ni 1.2500 1.7500 -
Mo 1.3000 1.8000 -
Mn 0.2000 0.5000 -
Cr 4.7500 5.5000 -
C 0.4500 0.5500 -

Mechanical Properties of steel grade AISI A-9

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)
355 (≥) 136 (≥) 41 11 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade AISI A-9

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
24 - -     0.33 -  
134 617 - 22.3 134   -  
219 - 22 13.2   211 434

Heat Treatment of steel grade AISI A-9

Heat treated : 1819°C - 1566°C

Technological Curves of steel grade AISI A-9

Cross Reference Table (Equivalent Grade) of AISI A-9

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