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GOST 12X21H5T Details

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12X21H5T Application:Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Category Type Grade Microstructure Designations
Grades Stainless Steels 12X21H5T Austenitic-Ferritic(Duplex steel) Russia - GOST ,

Chemical composition(wt.%) of 12X21H5T grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.09 0.14
Si - 0.80
Mn - 0.80
P - 0.035
S - 0.025
Cr 20.00 22.00
Ni 4.80 5.80
Mo - 0.30
W - 0.20
Ti 0.25 0.50
Al - 0.08
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Mechanical properties of grade 12X21H5T

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)
451 (≥) 753 (≥) 24 24 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical properties of grade 12X21H5T

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
519 (≥) 822 (≥) 43 42 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 214
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
672 317 235

12X21H5T - Form of Supply

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

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
12X21H5T GOST Russia
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

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