1.45Cr-3.45Ni Alloy steel 12X2H4A
2026-08-23 09:20:00 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 bloomed, forged,rolled, heat treated
TECHNICAL DATA SHEET - 12X2H4A
Technical specification: TOCT 4543 - 1971
Available in stock: round bar, plate
Material category: alloy structural steel Cr - Ni type
Typical chemical elements (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
TYPICAL MECHANICAL PROPERTIES
Hot working temperarture: 1180 ~ 850 degree centigrade
Hot working temperarture: 1180 ~ 850 degree centigrade
Heat treatment: Quenching 860 degree centigrade, oil cooling
Tempering 180 degree centigrade, air or oil cooling
Tensile strength, Rm ≥ MPa: 1128
Yield strength, Rp0.2 ≥ MPa: 932
Elongation, A5: 10.0% Min.
Reduction of area, Z: 50.0% Min.
Tensile strength, Rm ≥ MPa: 1128
Yield strength, Rp0.2 ≥ MPa: 932
Elongation, A5: 10.0% Min.
Reduction of area, Z: 50.0% Min.
Impact strength, 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.
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.
PROFILES & DIMENSIONS
Rod, round bar, disc (diameter): 6.0 to 900 mm
Square bar, flat bar: 8 to 600 mm
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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