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Description

Russia GOST 12X8 Specialsteel Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 12X8
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 12X8 Austenite GOST Russia Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Chemical composition(mass fraction)(wt.%) of the 12X8

C Si Mn P S Cr Ni Mo W V Ti
≤0.12 0.17 -0.37 0.30 -0.60 ≤0.035 ≤0.030 7.50 -9.50 ≤0.40 0.60 -0.90 1.70 -2.20 0.15 -0.30 ≤0.05

Mechanical Properties of steel grade 12X8

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)
692 (≥) 781 (≥) 21 31 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 12X8

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
11 - -     0.24 -  
291 939 - 13.3 411   -  
995 - 41 43.2   114 334

Heat Treatment of steel grade 12X8

Heat treated : 1795°C - 1549°C

Technological Curves of steel grade 12X8


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