Grade31

This page provides Grade31 datasheet, Grade31 mechanical properties, chemical element Grade31, technical specifications of Grade31 steel material properties. Grade31 performance specifications.

AISI Grade31
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy Grade31 AISI USA
ICI 4620
ASTM 12Q
ICI 6150
ASTM 13Q
ICI 8620
ICI 8630
ASTM 14Q
ASTM 15A
ICI 52100
Grade21
Datasheet for:Steel Grades:Special Alloy:Grade31

Chemical composition(mass fraction)(wt.%) of the Grade31

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) W(%) B(%) Other(%)
0.45-0.55 Max 1.00 Max 1.00 Max 0.040 Max 0.040 24.5-26.5 9.50-11.5 7.00-8.00 0.005-0.015 Fe Max 2.00

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade Grade31

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)
618 (≥) 861 (≥) 12 32 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 143
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
12 - -     0.23 -  
564 717 - 14.3 131   -  
469 - 34 44.2   423 121
Heat treated : 1133°C - 1128°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
Grade31 AISI USA
Grade31

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