10705BU Martensitic Creep-resisting Steel
| Product parameters | |
| Material Category:: | Martensitic Stainless Steel |
| Place of Origin: | P. R. China |
| Terms of Price:: | Ex works, CIF, and CFR |
| Stocklist & Inventory Available:: | Round bar Diam. 20 ~ 220mm |
| Melting Process Route:: | EAF + LF + VD / + ESR, BEF + ESR |
| Min. order quantity Per Batch:: | 1000 KG |
| Product Shapes:: | Round bar, Flat bar, Hollow bar, Plate, and Forgings. |
| Heat Treatment Practice:: | Hardened 1000 ℃, water or air cooled, tempered 700 ℃ min, 2 times tempered |
| Surface Condition:: | Peeled - Rough turned - Bright surface. |
| Ultrasonic Test Standard:: | ASTM E2375 / MIL-STD- AMS 2154 / SEP 1923 / GB/T 4162 / EN 10228-3 / EN 10308 |
| Production Lead Time:: | Within 65 days after 40% deposit prepayable |
| Unified Social Credit Code:: | 91510871777942750J |
| Company ISO Register No:: | UQ211218R0 |
Description
Introduction:
10705BU is a hardenable stainless steel designed for use at temperatures of up to 650 ºC. 10705BU has good resistance to scaling and oxidation. Through heat treatment, high mechanical properties can be developed. 10705BU is used in applications such as compressors or steam turbines and also in aircraft parts, valves, high temperature bolting, and other mechanical parts used in high temperature circumstances.
The alloy is usually produced by BEF & AOD followed by electroslag remelting (ESR) / VAR if necessary for special purpose.
100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
Bars are usually supplied black/bright in the annealed condition.
Applications:
Aircraft components.
High pressure corrosive fabricated parts such as valves
Shafts, Fasteners, Fittings and gears.
All Grades Equivalents
| DIN | ASTM | AISI | UNS | JIS | Other |
|---|---|---|---|---|---|
| 1.4935 X20CrMoWV12-1 |
Grade 616 | 422 | S42200 | SUH 616 | 10705BU AMS 5655 |
Chemical Composition (Mass weight %)
| C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|
| 0.20 ～ 0.25 | ≤ 0.50 | 0.50 ～ 1.00 | ≤ 0.025 | ≤ 0.025 | 11.0 ～ 12.5 | 0.50 ～ 1.00 | 0.90 ～ 1.25 | W 0.90 ～ 1.25 V 0.20 ～ 0.30 |
Mechanical Properties Under Room Temperature.
| Condition of heat treatment | Tensile Rm(MPa) | Yield Rp0.2(MPa) | Elongation A (%) |
Reduction in cross section on fracture Z (%) |
Impact AKV/AKU(J) | Brinell Hardness(HBW) |
|---|---|---|---|---|---|---|
| Annealed | - | - | - | - | - | ≤ 248 |
| Hardened 1022℃ ~ 1050℃ air or oil cooled, ≥620℃ X 2H, tempered | ≥ 965 | ≥ 760 | ≥ 13.0 | ≥ 30.0 | ≥ 11 | 302 ~ 352 |
| Hardened 1022℃ ~ 1050℃ air or oil cooled, ≥677℃ X 2H, tempered | ≥ 825 | ≥ 585 | ≥ 17.0 | ≥ 35.0 | ≥ 20 | 241 ~ 285 |
Supplying Forms and Dimensions
Round bar (Diameter): 5.5 mm to 550 mm
Wire rod (Diameter): 0.10 ~ 16mm
Square bar / Flat bar: 5mm to 550mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 650mm X L (or in coil form)
Forged ring: OD200 ~ 1500mm X ID150 ~ 1250mm X H20 ~ 1250mm
Heavy/middle plate via hot rolled: T50 - 200mm X W80- 1200mm X L1000-3000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
