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ISO X21CrMoNiV12-2 Details

X21CrMoNiV12-2 Application:Wrought steels for use at elevated temperatures in engines

Category Type Grade Microstructure Designations
Grades Stainless Steels - Special Steels X21CrMoNiV12-2 Bainite International - ISO , ISO/TR 4956 - Wrought steels for use at elevated temperatures in engines

Chemical composition(wt.%) of X21CrMoNiV12-2 grade: ISO/TR 4956

Elements Min.(≥) Max.(≤)
C 0.17 0.25
Si - 0.50
Mn - 1.00
P - 0.035
S - 0.030
Cr 11.00 12.50
Mo 0.70 1.20
Ni 0.30 1.00
V 0.20 0.35
Wrought steels for use at elevated temperatures in engines

Mechanical properties of grade X21CrMoNiV12-2 ISO/TR 4956

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)
736 (≥) 171 (≥) 14 12 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical properties of grade X21CrMoNiV12-2 ISO/TR 4956

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
294 (≥) 156 (≥) 22 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 444
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
629 799 988

X21CrMoNiV12-2 - 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
X21CrMoNiV12-2 ISO International
Wrought steels for use at elevated temperatures in engines

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