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America MIL S-43 Steel bars for projectile stock and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S-43 / S-43
Category Grade Standard Region/Area Standard Content
Metals S-43 MIL S 43A America Steel bars for projectile stock

Chemical composition(mass fraction)(wt.%) of the S-43

Element Min Max Similar
C 0.2500 0.4000 -
Mn 1.1500 1.5500 -
P - 0.0400 -
S 0.0800 0.1800 -
Si 0.1000 0.2000 -

Mechanical Properties of steel grade S-43

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)
481 (≥) 849 (≥) 44 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade S-43

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
44 - -     0.42 -  
279 421 - 21.3 312   -  
896 - 22 32.2   221 332

Heat Treatment of steel grade S-43

Heat treated : 1336°C - 1123°C

Technological Curves of steel grade S-43

Cross Reference Table (Equivalent Grade) of S-43

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