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GB 12Cr12Mo / 1Cr12Mo Details

12Cr12Mo 1Cr12Mo

12Cr12Mo / 1Cr12Mo Application:Steel of Blade for Steam turbine
Category Type Grade Designations
Grades Stainless Steels & Special Steels 12Cr12Mo / 1Cr12Mo China - GB , GB/T 8732-2014 - Steel of Blade for Steam turbine
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤)
C 0.10 0.15
Si - 0.50
Mn 0.30 0.60
P - 0.030
S - 0.020
Ni 0.30 0.60
Cr 11.50 13.00
Mo 0.30 0.60
Cu - 0.30
Mechanical properties of grade 12Cr12Mo / 1Cr12Mo
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)
141 (≥) 394 (≥) 34 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 313
Physical properties of grade 12Cr12Mo / 1Cr12Mo
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
384 (≥) 783 (≥) 22 44 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
296 634 628
12Cr12Mo / 1Cr12Mo 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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
12Cr12Mo / 1Cr12Mo GB China
Steel of Blade for Steam turbine
1Cr12Mo GB China
Heat-resisting steel bars

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