High tensile alloy steel 30Cr2Ni4MoV
2026-10-16 13:09:41 Origin： Remark：0 Click：
JB/T 1265 Specification for rotor and shaft forgings for 25 MW to 200 MW steam turbines 30Cr2Ni4MoV heat treated round bar, plate, peeled rod, stock available flat bar。
TECHNICAL DATA SHEET - GB 30Cr2Ni4MoV
Steel type: 1.75Cr - 0.45Mo - 3.5Ni - 0.1V - 0.3C iron base alloy steel
Technical specification: JB/T 1265 - 2002
Profiles and dimensions:
Round bar, rod, disc (diameter): 6.0 ~ 900 mm
Square bar, flat bar: 8 ~ 600 mm
Plate, sheet, strip: T 0.5 ~ 300 x W 20 ~ 1000 x L mm
TYPICAL CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): ≤ 0.35
Manganese, Mn (％): 0.20 ~ 0.40
Silicon, Si (％): ≤ 0.10
Phosphorus, P (％): ≤ 0.012Sulfur, S (％): ≤ 0.012
Chromium, Cr (％): 1.50 ~ 2.00
Molybdenum, Mo (％): 0.30 ~ 0.60
Nickel, Ni (％): 3.25 ~ 3.75
Vanadium, V (%): 0.07 ~ 0.15
Copper, Cu (%): ≤ 0.15
Aluminum, Al (%): ≤ 0.010
Ferrum, Fe (%): balance.
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: 860 MPa Min.
Yield strength, Rp0.2: 760 ~ 860 MPa
Elongation, A5: 17.0% Min.
Reduction of area, Z: 53.0% 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: 860 MPa Min.
Yield strength, Rp0.2: 760 ~ 860 MPa
Elongation, A5: 17.0% Min.
Reduction of area, Z: 53.0% 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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