Maraging C350
Maraging steels have very high strength and above average toughness. The cobalt containing grades held by Maher are exclusively double vacuum melted (VIM+VAR) for ultimate performance and high levels of cleanness, easily meeting AMS, MIL and customer specifications.
Maraging steels are essentially iron based with the major alloying additions being nickel, cobalt and molybdenum. However the low carbon content and the additions of alumunium and titanium are equally important. This combination yields very high strength whilst remaining readily weldable.
Maraging steels are supplied in the annealed condition where the microstructure consists of fine martensite. Aging to achieve final properties is a relatively low temperature procedure giving the required high strength and toughness. This low temperature treatment allows for machining close to final size since distortion is minimal. Maraging steels also retain their strength up to 450 oC, can be nitrided and have a corrosion resistance similar to that of standard martensitic stainless steels.
Maraging C350 has very high mechanical properties and above average toughness.
National Specifications
| ASTM | UNS | SEA AMS | British Standard | Werkstoff |
|---|---|---|---|---|
| A579 | 6514 | 1.6356 |
Material may also be released to Customer Specifications, subject to enquiry.
Technical Data
Nominal Chemical Composition
| C | Ni | Co | Mo | Ti | Al | Mn | Si | Fe | |
|---|---|---|---|---|---|---|---|---|---|
| Min | - | 17.50 |
12.00 | 3.00 | 1.50 | 0.12 | - | - | - |
| Max | 18.50 | 13.00 | 4.50 | 2.00 | 0.20 | 0.10 | 0.10 | Bal |
Typical Mechanical Properties (Oil patch)
| Annealed & maraged condition | KSI | MPa | % |
|---|---|---|---|
| Tensile Strength, min | 350 |
2410 | - |
| Yield Strength (0.2% offset), min |
330 | 2275 | - |
| Elongation on 4D | - | - | 8 |