34CrMo Alloyed Steel, 34CrMo
2026-11-02 08:59:01 Origin： Remark：0 Click：
JB/T 7025 Specification for rotor and shaft forgings for 25 MW steam turbines 34CrMo heat treated round bar, plate, peeled rod 34CrMo stock available flat bar
TECHNICAL DATA SHEET - 34CrMo
Steel type: 1.1Cr - 0.25Mo - 0.35C iron base alloy steel
Technical specification: JB/T 7025 - 2018
Stock in hand: plate, flat bar
Profiles and dimensions:
Round bar, rod, disc (diameter): 6.0 ~ 930 mm
Square bar, flat bar: 8 ~ 600 mm
Plate, sheet, strip: T 0.5 ~ 300 x W 20 ~ 1200 x L mm
TYPICAL CHEMICAL ELEMENTS (mass fraction - %)
Carbon, C (％): 0.30 ~ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Silicon, Si (％): 0.17 ~ 0.37
Phosphorus, P (％): ≤ 0.020Sulfur, S (％): ≤ 0.012
Chromium, Cr (％): 0.90 ~ 1.30
Molybdenum, Mo (％): 0.20 ~ 0.30
Nickel, Ni (％): ≤ 0.50
Vanadium, V (%): -
Copper, Cu (%): ≤ 0.20
Tungsten, W (%): -
Aluminum, Al (%): -
Ferrum, Fe (%): balance
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT PRACTICE
Heat treatment temperature, annealing:
Heat treatment temperature, normalizing: -
Heat treatment temperature, quenching: 830 degrees celsius
Heat treatment temperature, tempering : 620 degrees celsius
Hardness after annealing, ≤ HB: 269
Tensile strength, Rm: 580 MPa Min.
Yield strength, Rp0.2: 350 MPa Min.
Elongation, A5: 17.0% Min.
Reduction of area, Z: 32.0% Min.
Impact strength, AKU2: 39 J Min.
Heat treatment temperature, annealing:
Heat treatment temperature, normalizing: -
Heat treatment temperature, quenching: 830 degrees celsius
Heat treatment temperature, tempering : 620 degrees celsius
Hardness after annealing, ≤ HB: 269
Tensile strength, Rm: 580 MPa Min.
Yield strength, Rp0.2: 350 MPa Min.
Elongation, A5: 17.0% Min.
Reduction of area, Z: 32.0% Min.
Impact strength, AKU2: 39 J Min.
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.
PRODUCT DESCRIPTION
34CrMo is usually produced by EAF + VD + LF / EF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied black in the annealed condition.
Heat treatment condition- normalized + tempered, quenched + tempered.
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.
PRODUCT DESCRIPTION
34CrMo is usually produced by EAF + VD + LF / EF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied black in the annealed condition.
Heat treatment condition- normalized + tempered, quenched + tempered.
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
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