Rotor forging steel 34CrNi3Mo
2026-10-08 12:22:25 Origin： Remark：0 Click：
JB/T 7022 Specification for rotor forgings for industrial steam turbines 34CrNi3Mo heat treated round bar, plate, peeled rod, flat bar, cold drawn
TECHNICAL DATA SHEET - GB 34CrNi3Mo
Steel type: 0.9Cr - 3.0Ni - 0.32Mo - 0.34C base alloy steel
Technical specification: JB/T 7022
Profiles and dimensions:
Round bar, rod, disc (diameter): 6.0 ~ 950 mm
Square bar, flat bar: 8 ~ 650 mm
Plate, sheet, strip: T 0.5 ~ 350 x W 20 ~ 1000 x L mm
TYPICAL CHEMICAL ELEMENTS (mass fraction - %)
Carbon, C (％): 0.30 ~ 0.40
Manganese, Mn (％): 0.50 ~ 0.80
Silicon, Si (％): 0.17 ~ 0.37
Phosphorus, P (％): ≤ 0.015Sulfur, S (％): ≤ 0.012
Chromium, Cr (％): 0.70 ~ 1.10
Molybdenum, Mo (％): 0.25 ~ 0.40
Nickel, Ni (％): 2.75 ~ 3.25
Vanadium, V (%): -
Copper, Cu (%): ≤ 0.20
Aluminum, Al (%): -
Ferrum, Fe (%): remainder.
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT PRACTICE
Heat treatment temperature, annealing:
Heat treatment temperature, normalizing: -
Heat treatment temperature, quenching: 880 degrees celsius
Heat treatment temperature, tempering : 550 degrees celsius
Hardness after annealing, ≤ HB: 269
Tensile strength, Rm: 700 ~ 850 MPa
Yield strength, Rp0.2: 820 MPa Min.
Elongation, A5: 14.0% Min.
Reduction of area, Z: 40.0% Min.
Impact strength, AKv: -
Heat treatment temperature, annealing:
Heat treatment temperature, normalizing: -
Heat treatment temperature, quenching: 880 degrees celsius
Heat treatment temperature, tempering : 550 degrees celsius
Hardness after annealing, ≤ HB: 269
Tensile strength, Rm: 700 ~ 850 MPa
Yield strength, Rp0.2: 820 MPa Min.
Elongation, A5: 14.0% Min.
Reduction of area, Z: 40.0% Min.
Impact strength, AKv: -
Hardness after final heat treatment, HB: -
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Mechanical parts - connecting rod, bolt and nuts.
Multi-diameter shaft, pressure vessel parts.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, mechanical gears, gear shaft, main axis, valve rod.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Mechanical parts - connecting rod, bolt and nuts.
Multi-diameter shaft, pressure vessel parts.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, mechanical gears, gear shaft, main axis, valve rod.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
Further, please also check the materials in stock available:
Raw material - steels of blade for steam turbine
XM-25, S45000, GD450, C450
403 ESR, GB8732 type 12Cr12Mo, 10705BA/BB/BC
AISI 616, 422, 1.4935, X20CrMoWV12-1, 10705BU
B50A365B, 403Cb+, 1.4913, X19CrMoVNbN11-1
17-4PH, 630, 1.4542, X5CrNiCuNb16-4, 10705GU/GV/GW
M-152, S64152, 1.4938, X12CrNiMoV12-3, S151D
FV520B, S143, 1.4594, X4CrNiCuMo14-5
X22CrMoV12-1, 1.4923
13Х11Н2B2MФ, AE961W
15-5PH, XM-12, S15500
A286, AISI 660, S66286
10705MBU, 10705AJ
Non-magnetic 18.0% Manganese alloy steel:
1.3813, X40MnCrN19
1.3816, X8MnCrN18-18
1.3817, X40MnCr18
1.3818, X55MnCrN18-4
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