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1Cr12 Application:Martensitic Steel
Category Type Steel grade Standard Country
Grades Special Alloy 1Cr12 GBT China

Chemical composition % of the ladle analysis of grade 1Cr12

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.15 Max 0.50 Max 1.00 0.035 Max 0.03 11.50-13.00 Max 0.60
1Cr12
Mechanical properties of grade 1Cr12
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)
483 (≥) 757 (≥) 22 42 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 442
Physical properties of grade 1Cr12
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
458 (≥) 894 (≥) 13 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 212
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
137 471 228
1Cr12 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
1Cr12 GBT China
Heat-resisting steel sheets and plates
1Cr12Mo GBT China
Heat-resisting steel bars
1Cr12WMoV GBT China
Heat-resisting steel bars
12Cr12Mo / 1Cr12Mo GBT China
Steel of Blade for Steam turbine
1Cr12Ni3Mo2VN GBT China
Specification for stainless steel cold rolled sheet for aviation

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