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GB/T 1Cr12Ni3Mo2VN Details

1Cr12Ni3Mo2VN is a new type of martensitic stainless steel for the last-stage blades of large-capacity nuclear and thermal power turbines. The deformation behavior of this steel was studied by thermal compression experiments that performed on a Gleeble-3500 thermal simulator at a temperature range of 850°C to 1200°C and a strain rate of 0.01s-1 to 20s-1. When the deformation was performed at high temperature and low strain rate, a necklace type of microstructures was observed, the plastic deformation mechanism is grain boundary slip and migration, when at low temperature and lower strain rate, the slip bands were observed, the mechanism is intracrystalline slips, and when at strain rate of 20s-1, twins were observed, the mechanism are slips and twins. The Arrhenius equation was applied to describe the constitutive equation of the flow stress. The accuracy of the equation was verified by using the experimental data and the correlation coefficient R2 = 0.9786, and the equation can provide reasonable data for the design and numerical simulation of the 1Cr12Ni3Mo2VN forging process.

1Cr12Ni3Mo2VN Application:Specification for stainless steel cold rolled sheet for aviation

Category Type Grade Microstructure Designations
Grades Stainless Steels - Special Steels 1Cr12Ni3Mo2VN Martensite China - GB/T , GJB 2295A - Specification for stainless steel cold rolled sheet for aviation

Chemical composition(wt.%) of 1Cr12Ni3Mo2VN grade: GJB 2295A

Elements Min.(≥) Max.(≤)
C 0.08 0.13
Si - 0.40
Mn 0.50 0.90
P - 0.030
S - 0.025
Cr 11.00 12.50
Ni 2.00 4.00
N 0.020 0.040
V 0.25 0.40

Mechanical properties of grade 1Cr12Ni3Mo2VN GJB 2295A

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)
892 (≥) 272 (≥) 44 14 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical properties of grade 1Cr12Ni3Mo2VN GJB 2295A

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
585 (≥) 441 (≥) 33 24 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 434
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
792 254 224

1Cr12Ni3Mo2VN - 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
1Cr12Ni3Mo2VN GB/T China
Specification for stainless steel cold rolled sheet for aviation

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