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JIS SKH4 | DIN 1.3265/S18-1-2-10 | ASTM T5/T12005 | BS BT5 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:T5 steel introduction

    AISI T5 tool steel is one of tungsten type high speed tool steel, which belongs to ASTM A600specification, the standard for high speed tool steel materials. T4 tool steel is similar to T1 Tool Steel materials, but with 4.25~5.75% cobalt added to increase heat resistance. The red hardness of T4 steel and the high temperature hardness is a little higher than T1 tool steel. AISI T4 tool steel is a deep hardening alloy capable of Rockwell C 64 hardness.

    2: T5 Steel equivalent
    Country USA German Japan
    Standard ASTM A600 DIN EN ISO 4957 JIS G4403
    Grade T5/T12005 1.3265/HS18-1-2-10 SKH4
    3: T5 steel chemical composition
    Grade C Si Mn P S Cr Mo V W Co
    T5 0.75-0.85 0.2-0.4 0.2-0.4 0.03 0.03 3.75-5 0.5-1.25 1.8-2.4 17.5-19 7-9.5
    1.3265 0.72-0.8 0.45 0.4 0.03 0.03 3.8-4.5 0.5-0.8 1.4-1.7 17.5-18.5 9-10
    SKH4 0.73-0.83 0.45 0.4 0.03 0.03 3.8-4.5 / 1.0-1.5 17-19 9-11
    BT5 0.75-0.85 0.4 0.4 0.035 0.035 3.75-4.5 / 1.75-2.05 18.5-19.5 9-10
    4: T5 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: T5 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 T5 are used for Drills, Milling Cutters, Thread Cutting Tools, Knurling Tools, Cold extrusion punches, Broaches etc.

    6. ASTM T5 Tool Steel Heat Treatment

    Annealing of T-5 Steel 

        Annealing is recommended after hot working and before re hardening

        Heat the temperature to 850°C at a rate of no more than 220°C per hour.

        Hold at the temperature for one hour per inch of thickness(at least two hours).

        Cool slowly in the furnace or in air to ambient temperature.

        The resultant hardness achieved should be Max 255HB or lower.

    Stress Relieving

        Stress relieving to remove machining stresses should be carried out by heating to 600-650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

    Hardening of Steel T5

        Preheat T5 tool steel slowly to the temperature of 820-870°C.

        Heat to the final hardening temperature of 1250°C and make sure the material must be heated through.

        Quench in the warm oil,and then complete the quench in air.(care must be taken at this step)

    Tempering of T-5 Steel

        Tempering temperature: 550-590oC.

    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.