EN DIN 21CrMoV5-11 W.Nr 1.7709 Alloy Steel
MATERIAL SPECIFICATIONS
DIN EN 10028-2 (2003), DIN 17755 (1983)
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.17 ～ 0.25
Si (％): 0.30 ～ 0.60
Mn(％): 0.30 ～ 0.60
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 1.20 ～ 1.50
Mo (％): 1.00 ～ 1.20
Ni (％): ≤ 0.60
V (％): 0.25 ～ 0.35
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Hot working temperature /℃: 1100～850
Heat treatment temperature /℃|annealing / normalizing: 650~740
Heat treatment temperature /℃|quenching: 900~950 Oil or Air
Heat treatment temperature /℃|tempering: 680~740
HBW: 205~250
Tensile strength, (≥)|σb/MPa: 690～830
Yield strength, (≥)|σs/MPa: 540
Elongation, (≥)|δ5(%): 16.0
Impact, (≥)|AKV/J: 55
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Yield strength σ0.2≥/MPa|200℃: 510
Yield strength σ0.2≥/MPa|300℃: 481
Yield strength σ0.2≥/MPa|350℃: 461
Yield strength σ0.2≥/MPa|400℃: 431
Yield strength σ0.2≥/MPa|450℃: 402
Yield strength σ0.2≥/MPa|500℃: 73
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
Pressure vessel, seamless pipe
PRODUCT PROFILE
Round bar / Wire rod (Diameter): 5.50mm to 700mm
Square bar / Flat bar: 10mm to 700mm
Plate / Sheet steel / Steel strip: 0.5mm to 1000mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
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