18X2H4BA
2016-12-28 09:38:43 Origin： Remark：0 Click：
TOCT 4543 Specification of 18X2H4BA high tensile steel, Round bar, flat bar, 18X2H4BA Forgings, Plate , heat treatment, ESR remelted.
TECHNICAL SPECIFICATION - TOCT 4543 type 18X2H4BA
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
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 ~ 4.50
Molybdenum, Mo (％): -
Molybdenum, Mo (％): -
Tungsten, W (%): 0.60 ~ 0.90
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 air or water cooling
Tensile strength, Rm ≥ MPa: 1180
Yield strength, Rp0.2 ≥ MPa: 835
Elongation, A ≥ (％): 10.0
Reduction of area, Z ≥ (％): 45.0
Tensile strength, Rm ≥ MPa: 1180
Yield strength, Rp0.2 ≥ MPa: 835
Elongation, A ≥ (％): 10.0
Reduction of area, Z ≥ (％): 45.0
Impact, AKv (J/cm2): 78
Annealed hardness | HBW: 269 min.
Annealed hardness | HBW: 269 min.
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.
FORMS AND DIMENSIONS
Round bar (diameter): 5.5mm to 500mm
Square bar / Flat bar: 10mm to 500mm
Steel wire: diameter 1.0 ~ 12mm in Coil
Forging piece: stepped shafts, and other different shapes based on buyer's requirements.
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.
FORMS AND DIMENSIONS
Round bar (diameter): 5.5mm to 500mm
Square bar / Flat bar: 10mm to 500mm
Steel wire: diameter 1.0 ~ 12mm in Coil
Forging piece: stepped shafts, and other different shapes based on buyer's requirements.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. Email: sales@ccsteels.com.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. Email: sales@ccsteels.com.
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