1.4935 - AISI 422 - 10705BU - B50A951
2025-10-17 23:11:45   Origin：   Remark：0 Click：

MATERIAL DESIGNATION - 1.4935 & X20CrMoWV12-1 & AISI 422 & 10705BU & B50A951

Material category - martensitic creep-resisting steels
Material Specifications - DIN 17442,17744, DIN EN 10302, 10095, EN 10088-1
Stock available - round bar diam.20 ~ 210mm, ESR ingot, billets, plate
Typical chemical compositions (mass weight %)
Carbon, C (％): 0.20 ~ 0.25
Silicon, Si (％): 0.10 ~ 0.50
Manganese, Mn (％): 0.50 ~ 1.00
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 11.0 ～ 12.5
Nickel, Ni (％): 0.50 ~ 1.00
Molybdenum, Mo (％): 0.90 ~ 1.25
Vanadium, V (％): 0.20 ~ 0.30
Tungsten, W (%): 0.90 ~ 1.25

TYPICAL MECHANICAL PROPERTIES
Condition +H: quenched 1030 ℃, oil or air cooling, and tempered 700 ℃ min.
Tensile strength, Rm / MPa: 780 ~ 930 
Yield strength, Rp0.2 ≥ MPa: 590
Elongation, A5 ≥ (％): 14.0
Hardness: HB 240 ~ 285

Condition + TH: quenched 1030 ℃, oil or air cooling, and tempered 570 ℃ min.
Tensile strength, Rm / MPa: 930
Yield strength, Rp0.2 ≥ MPa: 760
Elongation, A5 ≥ (％): 13.0
Hardness: HB 302 ~ 352
Non-scale temperature in air: 600℃

PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 ~ 950mm
Square bar / flat bar: 10 ~ 600mm
Heavy / middle plate via hot rolled: T60 ~ 400 X W60 ~ 1200mm X L1000 ~ 5000mm
Forging piece: stepped shafts, other different shapes based on OEM.