18X2H4MA
2016-12-23 11:36:13 Origin： Remark：0 Click：
4.2% Nickel - 1.5 Chromium High tensile steel 18X2H4MA Round bar, flat bar, plate 18X2H4MA Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment, cold machined.
TECHNICAL SPECIFICATION - Grade 18X2H4MA
TECHNICAL SPECIFICATION - TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
MATERIAL CATEGORY - alloy structural steel Cr - Ni - Mo type
CHEMICAL COMPOSITION (mass weight %)
Carbon, C (％): 0.14 ~ 0.20
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.25 ~ 0.55
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 1.35 ~ 1.65
Nickel, Ni (％): 4.00 ~ 4.40
Molybdenum, Mo (％): 0.30 ~ 0.40
Molybdenum, Mo (％): 0.30 ~ 0.40
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1150 ~ 850 Deg.
Hot working temperarture: 1150 ~ 850 Deg.
Heat treatment: Quenching 950 Deg. air cooling
Tempering 200 oil or air cooling
Tensile strength,σb/≥ MPa: 1128
Yield strength, σ0.2/≥ MPa: 834
Elongation, δ ≥(％): 12.0
Reduction of area, ф ≥ (％): 50.0
Tensile strength,σb/≥ MPa: 1128
Yield strength, σ0.2/≥ MPa: 834
Elongation, δ ≥(％): 12.0
Reduction of area, ф ≥ (％): 50.0
Impact strength, Akv (J/cm2): 98
Annealed hardness | HBW: 269
Annealed hardness | HBW: 269
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.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rods, bolts and nuts, Multidiameter shafts.
PRODUCT FORMS AND DIMENSIONS
Round bar (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Forging piece: stepped shafts, other different shapes based on OEM.
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.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rods, bolts and nuts, Multidiameter shafts.
PRODUCT FORMS AND DIMENSIONS
Round bar (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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