12X8 Stainless Steels

12X8 - Specification & Application

Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Chemical composition(wt.%) of 12X8 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si 0.17 0.37
Mn 0.30 0.60
P - 0.035
S - 0.030
Cr 7.50 9.50
Ni - 0.40
Mo 0.60 0.90
W 1.70 2.20
V 0.15 0.30
Ti - 0.05

12X8 - Detail

Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Mechanical properties of grade 12X8

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
276 (≥) 248 (≥) 31 21 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical properties of grade 12X8

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
728 (≥) 691 (≥) 42 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
529 846 496

Equivalent Grade

Equivalent Products

We can customize the production of 12X8 grade, contact us for the best solution.
sales@specificsteel.com