W720

    Product Description

    Tool steel that has proved highly satisfactory for hot and cold work and long-time service up to approx . 450°C (842°F) in various fields of application. Tools for hydrostatic presses, cold extrusion tools, cold heading and embossing tools, molds for the plastics industry, die casting tools for aluminium and zinc alloys, hot pressing tools, cold pilger mandrels.

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    Property Features

    Ultra-high-strength maraging steel. In contrast to heat treatable steels its outstanding tensile properties are not due to a hardened structure with relatively high carbon content, but to precipitation of intermetallic phases from a ductile nickel bearing matrix containing almost no carbon.

    This results in the following advantages: High tensile strength and excellent yield point ratio, satisfactory toughness (reduction of area, elongation, impact strength, fracture toughness) even at low temperatures, superior notched tensile strength and heat checking resistance, practically no size change in heat treatment, no decarburization, no cracking, full hardening even in sizes above average. Convenient machinability in the solution annealed condition (machining is also possible in the precipitation-hardened condition). Good cold forming properties owing to reduced susceptibility to work hardening, eminent weldability, simple heat treatment at low temperatures.

    Technical Specifications

    Material Numbers


    1.6358 ~1.2709 K93120


    Standards


    6521, 6514 Marage 300

    Chemical Composition

    5.00 18.50 9.00 0.70 0.10

    Chemical composition (average %)

    Available product shapes

    • Flat bar

      Flat bar

    • Round bar

      Round bar

    • Complex cut/six side machining

      Complex cut/six side machining

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    Contacts

    BÖHLER Toolsteel

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