Mar-M246
Mar-M246 is a kind of Nickel-based casting alloy which is strengthen by the precipitation phase. It has high persistent strength and creep rupture strength at 650-1040℃which simultaneously has good anti-oxidation property and be good at casting complex shape castings as well as making a single turbo.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| – | K246 | – | Mar-M246 | – | – | – | – | – | – | – |
Chemical Composition, %
| Alloy | C | Si | Mn | P | S | Cr | Ni | Co | W | Mo | Al | Ti | Ta | B | Zr | Fe |
| Mar-M246 | 0.13-0.17 | ≤0.2 | ≤0.2 | ≤0.01 | ≤0.01 | 8.0-10.0 | Bal | 9.0-11.0 | 9.0-11.0 | 2.25-2.75 | 5.25-5.75 | 1.25-1.75 | 1.25-1.75 | 0.01-0.02 | 0.03-0.08 | ≤0.5 |
Typical Physical and Mechanical Properties (RT, Solution Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.5 | 1220-1350 | 1025 | – | 8 | / |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | – |
| Plate, Sheet and Strip | – |
| Pipe and Tube | – |
| Welding Product | – |
| Others | – |
Features
It has high persistent strength and creep rupture strength at 650-1040℃which simultaneously has good anti-oxidation property and be good at casting complex shape castings as well as making a single turbo.
Applications
The alloy has been used to make working blades of pressure cooker turbine and integrally cast turbine of aeroengine.
