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GB 30Cr3Ni3Mo | JIS SNCM630 Engineering steel

Port: Hu nan

SNCM630 engineering steel, SNCM630 alloy tool steel, SNCM630 alloy steel, SNCM630 alloy structural steel, 30Cr3Ni3Mo engineering 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: SNCM630 steel introduction

        SNCM 630 steel is an alloy steel in JIS G 4103. It contains nearly 3% Ni, 3% Cr and a small amount of 0.5% Mo. It belongs to Ni-Cr-Mo series steel. SNCM630 steel is generally delivered in annealed condition.

    2: SNCM630 steel equivalent

    Country China Japan Germany USA
    Standard GB/T JIS G4103

    DIN (W-Nr.)


    Grade 30Cr3Ni3Mo

    3: SNCM630 steel chemical composition

    Grade C Si Mn P S Cr Mo Ni
    SNCM630 0.25-0.35 0.15-0.35 0.35-0.60 0.03 0.03
    0.50-0.70 2.50-3.50

    4: SNCM630 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: SNCM630 steel overviews

    Size Round Dia 6-1200mm
    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  SNCM 630 is mainly used for mechanical structural steel, which is made by hot rolling, forging and other hot forming methods, and is usually used after further forging.

    6: Heat Treatment


        Heat the steel to the temperaure  830-870℃, and enough soaking time for the steel heating, Cool slowly in the furnace with hardness below 269HBW.


       Quenching temperature is carried out from an austenitizing temperature of 850-900℃ with several heating steps,keep suitable time for the steel to be thoroughly heated,  oil quenching is recommended.


       Tempering process should be followed after quenching immediately.Tempering at a suitable temperature 550-650℃ .

    7: Delivery condition

        For hot forged  bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface.
        For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
        For hot forged block, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface
        For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, black surface.
        For cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface