12X8BΦ Stainless Steels

12X8BΦ - Specification & Application

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

Chemical composition(wt.%) of 12X8BΦ grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.08 0.15
Si - 0.60
Mn - 0.50
P - 0.030
S - 0.025
Cr 7.00 8.50
Ni - 0.60
Mo - 0.20
W 0.60 1.00
Ti - 0.03
V 0.30 0.50

12X8BΦ - Detail

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

Mechanical properties of grade 12X8BΦ

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)
541 (≥) 539 (≥) 24 44 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical properties of grade 12X8BΦ

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
781 (≥) 421 (≥) 21 21 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 323
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
385 674 848

Equivalent Grade

Equivalent Products

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