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GB 3Cr2W8V | JIS SKD5 | DIN 1.2581 | ASTM H21 Hot Work Tool Steel

Port: Hu nan


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    1: AISI H21 steel introduction

        H21 steel is a hot sham W-Cr-Mo Tungsten hot take steps steel partner ASTM A681-1999 Steel Grade suitable. H21 Special Steel China Supplier and factory SAE Special Steel Supply H21 Tool steel in Round bar, Plate, Flat bar, Square, Forging Ring and others any swap. And have the funds for choking, sawing, milled, machining paperwork.

    2: AISI H21 Steel equivalent
    Country China Japan Germany USA UK
    Standard GB/T 1299 JIS G4404 DIN EN ISO4957 ASTM A681 BS 4659
    Grade 3Cr2W8V SKD5 1.2581   H21

    3: AISI H21 steel chemical composition
    Grade C Si Mn P S Cr W V
    H21/T20821 0.26~0.36 0.15~0.50 0.15~0.40 0.030 Max 0.030≤ 3.00~3.75 8.50~10.0 0.30~0.60
    1.2581/ X30WCrV9-3 0.25~0.35 0.15~0.30 0.20~0.40 0.035 Max 0.035 ≤ 2.50~2.80 8.00~9.00 0.30~0.40
    3Cr2W8V 0.30~0.40 ≤0.40 ≤0.40 0.030 Max 0.030 ≤ 2.20~2.70 7.50~9.00 0.20~0.50
    SKD5 0.25~0.35 0.10~0.40 0.15~0.45 0.030 Max 0.020 ≤ 2.50~3.20 8.50~9.50 0.30~0.50

    4: AISI H21 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: AISI H21 steel overviews
    Size Round Dia 6-1200mm
    Plate/Flat/Block Thickness
    Process EAF+LF+VD+Forged+Heat treatment(optional)
    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..
    Packing  Standard packages or as per customers request.
    Delivery time 30-45 days
    Application  H21 steel is a Mo content increased by 2%, take possession of to colleague the Mn content, enlarged the high temperature mechanical properties of steel, to run abandoned to the demands of the gathering production of aluminum alloy die-casting mould. The steel has high adaptableness, high heat stability, pleasurable resistance to wear and process play a role, the operational temperature of 650.

    6: Heat Treatment
        Heat to 885C, later cool in heat treatment at not quite 4C per hour. After annealing Hardness 235 HBS Max.
    Hardening and Quenching 
        Quenching | salt bath furnace: 1177 / ℃
        Quenching | controlled atmosphere furnace: 1191 / ℃
        Heat preservation time: 5 ~ 15 mins
        Quenching medium: air cooling
        Tempering temperature / ℃ : 552
        After tempering hardness HRC or higher: 52

    7: Delivery condition
        For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
        For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.

        For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.