12%Cr Heat resisting steel 10705BU
2026-10-18 07:53:57 Origin： Remark：0 Click：
Martensitic corrosion resisting steel 10705BU hardened round bar, milled flat bar 10705BU ESR ingot, stock available, heat treated, cold drawn
MATERIAL DESIGNATION
Grade 10705BU is a hardenable stainless steel designed for use at temperatures of up to 649 degree celsius. It has good resistance to scaling and oxidation. Through normal heat treatment, high mechanical properties can be achieved. 10705BU is widely used in applications - compressors or steam turbines and also in aircraft parts, valves, high temperature bolting.
Material category: 12% Cr Martensitic high tensile steel
Stock available: round bar 20 ~ 280 mm, forging billets
Typical chemical elements (mass fraction - %)
Carbon, C : 0.20 ~ 0.25
Silicon, Si : ≤ 0.50
Manganese, Mn : 0.50 ~ 1.00
Phosphorus, P : ≤ 0.025
Sulfur, S : ≤ 0.025
Chromium, Cr : 11.0 ~ 12.5
Nickel, Ni : 0.50 ~ 1.00
Molybdenum, Mo : 0.90 ~ 1.25
Tungsten, W : 0.90 ~ 1.25
Silicon, Si : ≤ 0.50
Manganese, Mn : 0.50 ~ 1.00
Phosphorus, P : ≤ 0.025
Sulfur, S : ≤ 0.025
Chromium, Cr : 11.0 ~ 12.5
Nickel, Ni : 0.50 ~ 1.00
Molybdenum, Mo : 0.90 ~ 1.25
Tungsten, W : 0.90 ~ 1.25
Vanadium, V : 0.20 ~ 0.30
TYPICAL MECHANICAL PROPERTIES
Condition of heat treatment: +A
Hardness, ≤ HB 248
Condition of heat treatment: +TH
Hardened 1022℃ ~ 1050℃ air or oil cooled, ≥ 620℃ X 2H, tempered
Tensile strength, σb ≥ MPa: 965
Yield strength, σ0.2 ≥ MPa: 760
Yield strength, σ0.2 ≥ MPa: 760
Elongation, δ5 ≥ : 13.0
Reduction of area , ф ≥ : 30.0
Hardness, HB 302 ~ 352
Reduction of area , ф ≥ : 30.0
Hardness, HB 302 ~ 352
Condition of heat treatment: +H
Hardened 1022℃ ~ 1050℃ air or oil cooled, ≥ 677℃ X 2H, tempered
Tensile strength, σb ≥ MPa: 825
Yield strength, σ0.2 ≥ MPa: 585
Yield strength, σ0.2 ≥ MPa: 585
Elongation, δ5 ≥ : 17.0
Reduction of area, ф ≥ : 35.0
Hardness, HB 241 ~ 285
Reduction of area, ф ≥ : 35.0
Hardness, HB 241 ~ 285
Further, please also check the materials in stock available:
Raw material - steels of blade for steam turbine
XM-25, S45000, GD450, C450
403 ESR, GB8732 type 12Cr12Mo, 10705BA/BB/BC
AISI 616, 422, 1.4935, X20CrMoWV12-1, 10705BU
B50A365B, 403Cb+, 1.4913, X19CrMoVNbN11-1
17-4PH, 630, 1.4542, X5CrNiCuNb16-4, 10705GU/GV/GW
M-152, S64152, 1.4938, X12CrNiMoV12-3, S151D
FV520B, S143, 1.4594, X4CrNiCuMo14-5
X22CrMoV12-1, 1.4923
13Х11Н2B2MФ, AE961W
15-5PH, XM-12, S15500
A286, AISI 660, S66286
10705MBU, 10705AJ
Non-magnetic 18.0% Manganese alloy steel:
1.3813, X40MnCrN19
1.3816, X8MnCrN18-18
1.3817, X40MnCr18
1.3818, X55MnCrN18-4Hot search：
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