BÖHLER V250AMS is a premium aircraft-quality, maraging alloy steel in the form of bars, forgings and stock for forging up through 10 inches (254.00 mm) inclusive in diameter or least distance between parallel sides.
In contrast to heat treatable steels its outstanding tensile properties are not due to a hardened structure with relatively high carbon content, but to precipitation of intermetallic phases from a ductile nickel bearing matrix containing almost no carbon.
These products have been used typically for parts requiring through hardening, without quenching, to a minimum yield strength of 240 ksi (1655 MPa) and where such parts may require welding during fabrication, but usage is not limited to such applications. E.g highly stressed components for the aircraft and rocket industries.
| Market grade |
|---|
| Maraging 250 |
| AMS |
|---|
| 6512 |
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Co | Ti | Al | B | Ca | Zr | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max. 0.03 | max. 0.10 | max. 0.10 | max. 0.010 | max. 0.010 | max. 0.50 | 4.60 to 5.20 | 17.00 to 19.00 | max. 0.50 | 7.00 to 8.50 | 0.30 to 0.50 | 0.05 to 0.15 | max. 0.004 | max. 0.05 | max. 0.02 |
