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JIS SKH59 | DIN 1.3247/HS2-9-1-8 | ASTM M42 High Speed Steel

Port: Hu nan

engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel

Alloy Structural Steel, Alloy Tool Steel, Carbon Structural Steel, Carbon Tool Steel, Bearing Steel, Spring Steel ,Stainless Steel, Refractory Steel, Roll Steel, Pinion Steel. Additionally, the company also has the capacity to forge round steel, steel flat, square steel, module, shaft and roller


  • Quick details

    1:M42 steel introduction

        M42 Tool Steel is is a molybdenum-series high-speed steel alloy with an additional 8% cobalt. (HSSSteel M42) 8% Cobalt tool bits are designed for machining work hardening alloys and other tough materials. They have increased water resistance and tool life. This improves performance and retention of the cutting edge. M42 steel composition makes for a good combination of toughness and hardness.

    2: M42 Steel equivalent
    Country USA German Japan
    Standard ASTM A681 DIN EN ISO 4957 JIS G4403
    Grade M42 1.3247/HS2-9-1-8 SKH59
    3: M42 steel chemical composition
    Grade C Si Mn P S Cr Mo V W Co
    M42 1.05-1.15 0.2-0.65 0.15-0.4 0.03 0.03 3.5-4.25 9.0-10.0 0.95-1.35 1.15-1.85 7.75-8.75
    1.3247 1.05-1.15 0.7 0.15-0.4 0.03 0.03 3.5-4.5 9.0-10.0 0.9-1.3 1.2-1.9 7.5-8.5
    SKH59 1.05-1.15 0.7 0.4 0.03 0.03 3.5-4.5 9.0-10.0 0.9-1.3 1.2-1.9 7.5-8.5
    4: M42 steel mechanical properties  

        The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.

    5: M42 steel overviews
    Size Round Dia 2-200mm
    Plate/Flat/Block Thickness
    Heat treatment Normalized ; Annealed ; Quenched ; Tempered
    Surface condition Black; Peeled; Polished; Machined; Grinded; Turned; Milled
    Delivery condition Forged; Hot rolled; Cold drawn
    Test Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. 
    Payment terms T/T;L/C;/Money gram/ Paypal
    Trade terms FOB; CIF; C&F; etc..
    Delivery time 30-45 days
    Application M42 are used for cutting tools such as, twist drills, broaches, taps, milling, cutters, saws, reamers etc

    6.Heat Treatment of M42 Tool Steel High-speed steel material

        AISI M42 high speed steel is heated at 871°C (1599°F) and then cooled slowly in a furnace.
    Stress Relieving
        To relieve stresses created by extensive machining or tooling with complex geometries. Heat in a neutral atmosphere for 1 to 2 hours after reaching a temperature of 1110 to 1200°F (600 to 650°C), followed by slow cooling in the furnace.
        AISI M42 high speed steel is preheated to 871°C (1599°F), soaked and finally heated to 1204°C (2199°F).
        Tempering M42 tool steel at 560°C / 1040°F or higher 3 times for at least 1 hour at full temperature is recommended.

    7: Delivery condition

        For hot rolled bar, usually the delivery condition is hot rolled, annealed, Black surface.
        For cold drawn plate, usually the delivery condition is cold drawn, annealed, milled surface
        For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.