Heat resisting steel 21CrMoV5-7
2026-08-15 16:40:00 Origin： Remark：0 Click：
DIN EN 10028-2 (2003), DIN 17755 of steel 21CrMoV5-7 round bar, flat bar, 21CrMoV5-7 forging, Hot rolling, Heat treatment, Rough turned. 100% Ultrasonic test
MATERIAL DATA SHEET - 21CrMoV5-7
Material category: high temperature structural steel
Technical specification: DIN EN 10028-2 (2003), DIN 17755 (1983)
H S CODE For Customs: 7228 4000 / 7228 5000 / 7228 6000
Stock in hand: round bar 15 ~ 220 mm
Typical chemical compositions (mass weight - %)
Carbon, C (％): 0.17 ~ 0.25
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.80
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 1.20 ~ 1.50
Molybdenum, Mo (％): 0.55 ~ 0.85
Nickel, Ni (％): ≤ 0.60
Vanadium, V (％): 0.20 ~ 0.35
Others (%): Al ≤ 0.030
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1100 ~ 850
Heat treatment temperature /℃|annealing / normalizing: 650~730
Heat treatment temperature /℃|quenching: 890~940 oil or air
Heat treatment temperature /℃|tempering: 680~720
Delivery hardness / HBW: 205 ~ 250
Tensile strength, (≥) σb / MPa: 700 ~ 850
Yield strength, (≥) σs / MPa: 550
Elongation, (≥) δ5 (%): 16.0
Impact strength, (≥) | AKv / J: 69
Hot working temperature /℃: 1100 ~ 850
Heat treatment temperature /℃|annealing / normalizing: 650~730
Heat treatment temperature /℃|quenching: 890~940 oil or air
Heat treatment temperature /℃|tempering: 680~720
Delivery hardness / HBW: 205 ~ 250
Tensile strength, (≥) σb / MPa: 700 ~ 850
Yield strength, (≥) σs / MPa: 550
Elongation, (≥) δ5 (%): 16.0
Impact strength, (≥) | AKv / J: 69
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Yield strength σ0.2 ≥ MPa | 200℃: 500
Yield strength σ0.2 ≥ MPa | 300℃: 460
Yield strength σ0.2 ≥ MPa | 350℃: 441
Yield strength σ0.2 ≥ MPa | 400℃: 412
Yield strength σ0.2 ≥ MPa | 450℃: 372
Yield strength σ0.2 ≥ MPa | 500℃: 334
PROFILE & DIMENSIONS
Round bar & rod & disc (diameter): 6.0 to 850 mm
Square bar & fFlat bar: 10 to 610 mm
Plate & sheet & strip: 3.0 to 400 mm
Width: 8 to 1000 mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
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.
Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft and pressure vessel.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical inquiry, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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