About Smiths Advanced

We are a leading stockholder and global supplier of metals and plastics into Aerospace & Space, Chemical, Defence, Medical, MRO, Naval, Nuclear, Oil & Gas and Power industries.

We make high quality materials available in a fast, cost-effective and convenient package and provide a consistent supply path for all our customers.

Processing Services

Maraging 350 Steel Bar

Nickel-based maraging steel.

Maraging 300 has the highest strength of all maraging steels and offers excellent mechanical properties.

We stock Maraging 350 steel bars that provide even greater strength and are ideal for producing high-performance components.

Maraging 350 steel is a nickel-based material that utilises cobalt as a primary strengthening agent in the alloying process. The product has the highest strength of all available maraging steels and offers excellent mechanical properties. The maraging treatment is performed at low temperature, creating the desired strength and toughness characteristics. It also results in an alloy perfect for machining to very close tolerances.

Delivery Condition

We supply Maraging 300 in the annealed condition where the microstructure consists of fine martensite.Machining in the maraged condition is also possible. The tensile strength of the alloy is retained even at elevated temperatures (up to 450°C) while notch impact toughness is maintained at temperatures as low as -50°C.

Maraging 350 Steel Bar Datasheet


With high tensile strength and high fatigue strength, Maraging 350 finds use in product areas such asactuators, casting components, military gears, missile casings and aerospace driveshafts. We process your maraging steel bars in-house.

Stock Availability

Smiths Advanced Metals stocks Maraging 350 steel bars in the annealed condition and in closer incremental sizes to suit your particular engineering requirements.

Product Features:

    UNS K93160

    Torsion springs
    High velocity rotors
    Landing gear components
    High performance shafts

    Highest strength maraging steel
    Excellent mechanical properties
    Good weldability
    May be machined to tight tolerances

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