12X21H5T Stainless Steels

12X21H5T - Specification & Application

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

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

12X21H5T - Detail

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)
765 (≥) 111 (≥) 14 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

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
123 (≥) 118 (≥) 42 31 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 424
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
159 575 657

Equivalent Grade

Equivalent Products

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