Your present location:Home > Products > Hot Work Tool Steel

JIS SKD8 | DIN X38CrCoWV4-4-4 Hot Work Tool Steel

Port: Hu nan

SKD8 alloy tool steel, SKD8 alloy steel, SKD8 tool steel, SKD8 hot work tool 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: JIS SKD8 steel introduction

        SKD8 is the most widely used hot work die steel. It has a fairly good effect on thermal fatigue crack resistance, can ensure the quality of the die, improve the service life of the die.

    2: JIS SKD8 Steel equivalent

    Country China Japan Germany USA UK
    Standard GB/T 1299 JIS G4404 DIN EN ISO4957 ASTM A681 BS 4659
    SKD8 X38CrCoWV4-4-4

    3: JIS SKD8 steel chemical composition

    Grade C Mn P S Si Cr V Mo
    SKD8 0.40 0.35 . . .  0.01 0.25 4.35 2.00 0.40


    0.35 0.45 0.20 0.50 0.03 0.02 0.15 0.50 4.00 4.70 1.70 2.10 0.30 0.50

    4: JIS SKD8 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: JIS SKD8 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 SKD8 can be used to manufacture hot forging die, extrusion die, copper alloy die, aluminum copper magnesium hot press molding die, plastic die, etc..

    6: Heat treatment

     Hot-working treatment : 900-1100 ℃

     Annealing : temperature 820-870 ℃, holding time 2-4h, slow cooling to about 500 ℃, air cooling out of the furnace.

     Quenching | salt bath furnace: 1010 / ℃

     Quenching | controlled atmosphere furnace: 1020/ ℃

     Tempering temperature / ℃ : 550

     After tempering hardness HRC or higher: 60

    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.