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JIS SKH2 | DIN HS18-0-1/1.3355 | ASTM T1 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:T1 steel introduction

        T1 tool steel is one of the original tungsten high speed steels, although all tungsten steel grades are used to a limited extent because of the cost and questionable availability of tungsten. Of the T group steels, the general purpose T1 tool steels and the high-vanadium-cobalt T15 are most commonly used.

    2: T1 Steel equivalent
    Country USA German Japan
    Standard ASTM A600 DIN EN ISO 4957 JIS G4403
    Grade T1 1.3355/HS18-0-1 SKH2
    3: T1 steel chemical composition
    Grade C Si Mn P S Cr Mo V W Co
    T1 0.62-0.8 0.2-0.4 0.1-0.4 0.03 0.03 3.75-4.5 / 0.9-1.3 17.25-18.75 /
    1.3355 0.73-0.85 0.65 0.4 0.03 0.03 3.6-4.5 / 1.0-1.2 17.2-18.7 /
    SKH2 0.73-0.83 0.45 0.4 0.03 0.03 3.8-4.5 / 1.0-1.2 17.2-18.7 /
    4: T1 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: T1 steel overviews
    Size Round Dia 2-300mm
    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 T1 are used for Broaches, Drills, Hobs, Knurling Tools, Lathe Tools, Milling Cutters, Nut Piercers, Planer Tools, Reamers, Shaving Tools, Taps, Thread Cutting Tools.

    6. AISI/ASTM T1 Tool Steel Heat Treatment and Properties

    Treatment Temperature Range Cooling/Quenching Notes
    Forging 1700-2100° F Slow. Cool slowly in dry sand or in other insulating media.
    Annealing 1600-1650° F Cool slowly at a rate of 35° F per hour to 1000° F. For best results, insulating media is desirable. Hold at temperature for 2 hours.
    Stress Relieving 1100-1300° F Cool slowly Stress relieve after rough machining
    Preheating 1500-1550° F Preheat time in furnace is ¾ Hr. per inch of thickness. Heating up to temperature as slow as possible.
    Hardening 2325-2375° F (furnace) Quench in air or warm oil. To minimize quenching strains, quench in salt at 1000° F For maximum wear resistance, harden at 2375° F. For maximum toughness and high hardness, harden at 2275° F.
    2275-2350° F (salt bath)
    Tempering 1022 ° F-1058 ° F Temper T1 high-speed steel immediately after quenching. Hold for at least two hours Double tempering is recommended. The usual tempering time is 2+2 hours. Recommended temperature is 1000-1075° F for cutting tools. 1100-1200° F for shock tools

    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.