Vascomax® Maraging Steels

A series of carbon-free, nickel-cobalt-molybdenum steels known for possessing an unmatched combination of ultra-high strength, toughness, and dimensional stability during heat treatment.

Available Maraging Grades

Maraging 250

Vascomax® 250 (C-250) offers the highest fracture toughness of the maraging series. It is designed for applications requiring a balance of high strength (250 ksi) and resistance to shock loading.

Yield: 250 ksi High Toughness Missile Casings

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Maraging 300

Vascomax® 300 (C-300) is the most widely used grade. It provides a nominal yield strength of 300 ksi (2068 MPa) while retaining good ductility. It is the aerospace standard for high-performance shafts and landing gear.

Yield: 300 ksi Aerospace Standard Good Ductility

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Maraging 350

Vascomax® 350 (C-350) offers the absolute highest strength available in the series (350 ksi). It is used for the most critical components where strength-to-weight ratio is paramount, such as centrifuge rotors.

Yield: 350 ksi Extreme Strength Centrifuges

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What Makes Maraging Steel Special?

The term "Maraging" comes from "Martensitic Aging". Unlike conventional steels that are hardened by Carbon (which makes them brittle and prone to distortion), Maraging steels are virtually carbon-free.

They derive their immense strength from the precipitation of intermetallic compounds (Nickel, Cobalt, Molybdenum, Titanium) during a simple low-temperature heat treatment. This results in minimal dimensional change, allowing parts to be machined close to final size before hardening.

Grade Comparison: Yield Strength

Alloy Grade	UNS No.	Nominal Yield Strength	Primary Characteristic
Maraging 250	K92890	250,000 psi (1724 MPa)	Maximum toughness and ductility. Best resistance to crack propagation.
Maraging 300	K93120	300,000 psi (2068 MPa)	The "General Purpose" aerospace grade. Excellent balance of strength and toughness.
Maraging 350	K93160	350,000 psi (2413 MPa)	Maximum hardness and tensile strength. Slightly reduced toughness.

Key Industries

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Aerospace & Defense

Rocket motor cases, landing gear, and missile skins.

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Nuclear Enrichment

Ultra-high speed gas centrifuge rotors requiring extreme tensile strength.

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Motorsports

Formula 1 crankshafts, gears, and transmission shafts.

Looking for Aerospace Grade Steel?

We stock Vascomax® Maraging 250, 300, and 350 in Round Bar, Plate, and Forged Billets. Double melted (VIM-VAR) material available.

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