About Alloy
Maraging 300/Udimar 300/Maraging C300/UNS K93120/UNS K93160 material is a vacuum induction melted and vacuum arc re-melted, low-carbon, nickel-cobalt-molybdenum high-temperature nickel alloy. This material can produce yield strengths in excess of 270 ksi (1862 MPa) through simple, low-temperature heat treatment at 900°F (482°C). Maraging steel 300 also exhibits good ductility at high strength levels, displays excellent notch ductility and outstanding weldability.
Maraging 300 is an age hardenable (maraging) iron nickel stainless steel. Maraging 300 has exceptional strength, toughness and is resistant to crack propagation. Maraging 300 is used for tooling, transmission shafts, autosport components and light aircraft landing gear.
Product Form
Bar, Rod, Forging: AMS 6514
Sheet, Strip, Plate: AMS 6514 and AMS 6521 (UNS K93160)
Chemical Composition
| Weight% | C | Si | Mn | S | P | Co | Ni | Mo | Ti | Al | Fe |
| Maraging 300 | 0.03 max | 0.10 max | 0.10 max | 0.010 max | 0.010 max | 8.0-9.5 | 18.0-19.0 | 4.6-5.2 | 0.55-0.80 | 0.05-0.15 | Bal |
Property
| Material | 0.2 % Yield Strength ksi | Ultimate Tensile Strength ksi | Elongation in 4D(%) | Reduction of Area % | Hardness HRC |
| Maraging 300, Solution Annealed 1500° F (816°C), 1hr, AC | 120 | 150 | 16 | 70 | 30 |
| Solution Annealed Plus Aged 900 ° F (482°C), 3 hrs AC | 280 | 290 | 8 | 40 | 52 |
Application
● Missile & rocket motor cases
● Munitions
● Landing gear components
● Aerospace
● Extrusion tooling
● Die casting
● High performance shafting, gears & fasteners
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