31X19H9MBБT Stainless Steels

31X19H9MBБT - Specification & Application

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

Chemical composition(wt.%) of 31X19H9MBБT grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.28 0.35
Si - 0.80
Mn 0.80 1.50
P - 0.035
S - 0.020
Cr 18.00 20.00
Ni 8.00 10.00
Mo 1.00 1.50
W 1.00 1.50
Ti 0.20 0.50
Nb 0.20 0.50

31X19H9MBБT - Detail

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

Mechanical properties of grade 31X19H9MBБT

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)
829 (≥) 188 (≥) 21 12 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical properties of grade 31X19H9MBБT

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
368 (≥) 546 (≥) 32 12 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 414
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
262 796 424

Equivalent Grade

Equivalent Products

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