Grades | Stainless Steels | 31X19H9MBБT

GOST 31X19H9MBБT ( Austenite )

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31X19H9MBБT Application:Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Chemical composition(mass fraction)(wt.%) of the 31X19H9MBБT
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

Mechanical properties of grade 31X19H9MBБT

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
175 (≥) 171 (≥) 13 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

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
638 (≥) 147 (≥) 24 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
517 795 743 - - -

31X19H9MBБT Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED