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America SAE PS21 Potential standard steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: PS21 / PS 21
Category Grade Standard Region/Area Standard Content
Metals PS 21 SAE J 1081 America Potential standard steels

Chemical composition(mass fraction)(wt.%) of the PS 21

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0350 -
Mo 0.1300 0.2000 -
Mn 0.9000 1.2000 -
Cr 0.4000 0.6000 -
C 0.1500 0.2000 -

Mechanical Properties of steel grade PS 21

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)
674 (≥) 386 (≥) 31 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade PS 21

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
43 - -     0.24 -  
638 842 - 41.3 433   -  
998 - 12 33.2   121 322

Heat Treatment of steel grade PS 21

Heat treated : 1446°C - 1869°C

Technological Curves of steel grade PS 21

Cross Reference Table (Equivalent Grade) of PS 21

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