TECHNICAL DATA SHEET - DIN X20CrMoV12-1
MATERIAL CATEGORY - High temperature structural steel
MATERIAL SPECIFICATIONS - DIN EN 10028-2 (2003), DIN 17755 (1983)
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.17 ~ 0.23
Silicon, Si (％): ≤ 0.50
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％)≤: 0.030
Sulfur, S (％)≤: 0.010
Chromium, Cr (％): 10.0 ~ 12.50
Molybdenum, Mo (％): 0.80 ~ 1.20
Nickel, Ni (％): 0.30 ~ 0.80
Vanadium, V (％): 0.25 ~ 0.35
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1100～850
Heat treatment temperature /℃|annealing / normalizing: 700~780
Heat treatment temperature /℃|quenching: 1020~1070 Oil or Air
Heat treatment temperature /℃|tempering: 700~760
Tensile strength, (≥)|σb/MPa: 690～830
Yield strength, (≥)|σs/MPa: 490
Elongation, (≥)|δ5(%): 16.0
Impact, (≥)|AKV/J: 41
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Yield strength σ0.2≥/MPa|200℃: 461
Yield strength σ0.2≥/MPa|300℃: 392
Yield strength σ0.2≥/MPa|350℃: 373
Yield strength σ0.2≥/MPa|400℃: 353
Yield strength σ0.2≥/MPa|450℃: 314
Yield strength σ0.2≥/MPa|500℃: 265
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, hollow bars.
The alloy is usually produced by EAF /VD /LF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment - heat treatment / QT
AVAILABLE FORMS & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 450mm
Square bar / Flat bar: 10mm to 600mm
Plate / Sheet steel / Steel strip: 0.5mm to 400mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
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