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Maraging C250 Bar

Maraging 250™ Bar is a vacuum induction melted and vacuum arc melted, low-carbon, nickel-cobalt-molybdenum high temperature alloy.

This maraging steel bar can attain yield strengths in excess of 240 ksi (1655 MPa) through a simple, low temperature heat treatment. Maraging 250™ Bar exhibits good ductility at high strength levels and is readily welded.

At Calico Metal Ind Pvt, we have many years of experience supplying Maraging C250 forgings and many other product forms to your custom measurements and shapes. Our forging process includes open die forgings, ring rolling and more. See below for a list of the common C250 steel forged shapes and product forms we offer.


  • Meets AMS 6512 specifications
  • Meets ASTM A 538 specifications
  • Meets MIL-S-46850D specifications
  • Meets UNS K 92890 specifications
  • Extremely tough
  • Relatively soft
  • Maintains high strength & toughness
  • Ultrahigh tensile strength
  • Resists corrosion & crack propagation
  • Excellent cleanliness & polishability
  • Readily weldable


  • Missile & rocket motor cases
  • Munitions
  • Landing gear components
  • Aerospace
  • Extrusion tooling
  • Die casting
  • High performance shafting, gears & fasteners


  • UNS : K92890
  • Specifications : AMS 6512, MIL-S-46850, ASTM A538

Chemical Composition

Weight% Ni Co Mn Si C Al Mo S P Ti Fe Cr Cu
C250 17.0 / 19.0 7.0 / 8.5 0.10 max 0.10 max 0.03 max 0.05 / 0.15 4.6 / 5.2 0.010 max 0.010 max 0.3 / 0.5 Bal 0.50 0.50

Mechanical Properties

Material Condition Ultimate Tensile (min) Yield Strength (Min) Elongation in 4D % (min) Hardness
Mpa Ksi Mpa Ksi
Alloy Maraging C250 After Maraging heat treatment 900°F 1758 255 1724 250 6 ≥ 48 HRC

Calico Metal Ind Pvt Ltd export products to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.

HASTELLOY, HAYNES and C-22 are registered trade names of Haynes International, Inc., MONEL & INCONEL are registered trade names of INCO family of companies., NITRONIC is a registered trade name of Armco Inc., CARPENTER & 20Cb-3 are registered trade names of Carpenter Technology Corporation., FERRALIUM is a registered trade name of Langley Alloys, LTD.

Nickel Alloys Materials