18XГ
2025-05-04 15:34:49 Origin： Remark：0 Click：
ГОСT 4543 -1971 Material Specification for Steel Round bar 18XГ Steel forgings, Plate 18XГ stock available, Hot blooming / rolling / forging
TECHNICAL DATA SHEET - 18XГ
Material specifications: ГОСT 4543 -1971
Available in stock: round bar diam. 50 ~ 170mm
PRODUCT DESCRIPTION
The alloy is usually produced by EAF + VD + LF / BEF 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 bright in the annealed condition, or bright annealing specially.
Final heat treatment - Quenched and tempered.
Rod / round bar / disc (diameter): 5.5 ~ 800mm
Square bar & flat bar: 8 ~ 550mm
Plate & Sheet: cold & hot rolled / forged T 2.0 ~ 300 X W 10 ~ 8000 X L mm
Square bar & flat bar: 8 ~ 550mm
Plate & Sheet: cold & hot rolled / forged T 2.0 ~ 300 X W 10 ~ 8000 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.15 ~ 0.21
Silicon, Si (％): 0.17 ~ 0.37
Carbon, C (％): 0.15 ~ 0.21
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.90 ~ 1.20
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 0.90 ~ 1.20
Nickel, Ni (%): ≤ 0.30
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 0.90 ~ 1.20
Nickel, Ni (%): ≤ 0.30
Molybdenum, Mo (％): -
Ferrum, Fe (%): balance
Ferrum, Fe (%): balance
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT
Heat treatment temperature /℃ | annealing: -.
Heat treatment temperature /℃ | Normalizing: -
Heat treatment temperature /℃ | Quenching: 880 oil cooling
Heat treatment temperature /℃ | Tempering : 200 air / oil cooling
Hardness under annealing condition ≤ HBW: 187
Tensile strength, Rm ≥ MPa: 883
Yield strength, Rp0.2 ≥ MPa: 275
Elongation, A5 ≥ (%): 10.0
Reduction of area, Z ≥ (%): 40.0
Impact strength, AK ≥ J: -
Hardness after final heat treatment / HBW: -
Hardness under annealing condition ≤ HBW: 187
Tensile strength, Rm ≥ MPa: 883
Yield strength, Rp0.2 ≥ MPa: 275
Elongation, A5 ≥ (%): 10.0
Reduction of area, Z ≥ (%): 40.0
Impact strength, AK ≥ J: -
Hardness after final heat treatment / HBW: -
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.
Steel bar and steel forgings for barrel of middle-small caliber quick firing arms.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
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.
Steel bar and steel forgings for barrel of middle-small caliber quick firing arms.
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.
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.
If you are interested in our products or services, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
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