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America SAE A2 Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A2 / A2
Category Grade Standard Region/Area Standard Content
Metals A2 SAE J 438 America Tool and die steels

Chemical composition(mass fraction)(wt.%) of the A2

Element Min Max Similar
V - 0.4000 -
Si 0.2000 0.4000 -
Mo 0.9000 1.4000 -
Mn 0.4500 0.7500 -
Cr 4.7500 5.5000 -
C 0.9500 1.0500 -
V - 0.4000 -
Si 0.2000 0.4000 -
Mo 0.9000 1.4000 -
Mn 0.4500 0.7500 -
Cr 4.7500 5.5000 -
C 0.9500 1.0500 -

Mechanical Properties of steel grade A2

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)
242 (≥) 337 (≥) 34 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade A2

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 - -     0.31 -  
572 537 - 22.3 433   -  
499 - 32 21.2   112 424

Heat Treatment of steel grade A2

Heat treated : 1684°C - 1397°C

Technological Curves of steel grade A2

Cross Reference Table (Equivalent Grade) of A2

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