12X2H4A
2025-05-08 09:17:00 Origin： Remark：0 Click：
12X2H4A is a low carbon 3.5% Nickel - 1.5% Chromium base steel, 12X2H4A Stock available Round bar, flat bar, and forging, Hot blooming / forging / rolling, Heat treatment
TECHNICAL DATA SHEET - TOCT 4543 type 12X2H4A
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel Cr - Ni type
CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): 0.09 ~ 0.15
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 1.25 ~ 1.65
Nickel, Ni (％): 3.25 ~ 3.65
Molybdenum, Mo (％): -
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1180 ~ 850 Deg.
Hot working temperarture: 1180 ~ 850 Deg.
Heat treatment: Quenching 860 Deg. oil cooling
Tempering 180 air or oil cooling
Tensile strength, Rm ≥ MPa: 1128
Yield strength, Rp0.2 ≥ MPa: 932
Elongation, A5 ≥ (％): 10.0
Reduction of area, Z ≥ (％): 50.0
Tensile strength, Rm ≥ MPa: 1128
Yield strength, Rp0.2 ≥ MPa: 932
Elongation, A5 ≥ (％): 10.0
Reduction of area, Z ≥ (％): 50.0
Impact, AK (J/cm2): 88
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.
OFFERING FORMS & DIMENSION
Rod / round bar / disc (diameter): 5.5mm to 900mm
Square bar / flat bar: 8mm to 600mm
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm 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.
OFFERING FORMS & DIMENSION
Rod / round bar / disc (diameter): 5.5mm to 900mm
Square bar / flat bar: 8mm to 600mm
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Forging piece: stepped shafts, other different shapes based on OEM.
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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