Maraging 300


Maraging 300

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.

Specifications

  • UNS K93120
  • ASTM A579
  • SAE AMS 6514 and AMS 6521 (UNS K93160)
  • MIL S 46850, MIL S 13881
  • Werkstoff Nr. 1.6358 and 1.6354
  • Also known as Type 300, Maraging 300, C300
  • Vdimor 300
  • Vascomax C300

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Alloy Name Trade Name UNS No. American Specs German Specs
Maraging 300 Udimar 300
Maraging C300
UNS K93120
UNS K93160
AMS 6514 Bar, Tube and Forgings
AMS 6521 Sheet, Strip and Plate
MIL-S-46850 TYPE 4
Werkstoff 1.6354
Werkstoff 1.6358

Technical Data Sheet

Chemical Composition Limits
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

Typical Mechanical Properties

Material 0.2 % Yield Strength ksi Ultimate Tensile Strength ksi Elongation in 4D(%) Reduction of Area % Hardness Rc
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


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