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GB 35CrMo | JIS SCM435 | ASTM 4135 Engineering Steel

Port: Hu nan

SCM435 engineering steel, 4135 engineering steel, 4135 alloy tool steel, 4135 carbon steel, 4135 alloy steel, 4135 alloy structural 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: 4135 steel introduction

         4135 has high static strength, impact toughness and high fatigue limit, hardenability is higher than 40Cr. High creep strength and rupture strength at high temperature, long term working temperature up to 500℃, medium ductility and poor weldability at cold deformation.

    2: 4135 steel equivalent

    Country China Japan Germany USA British
    Standard GB/T 3077 JIS G4105/JIS DIN (W-Nr.)
    EN 10250


    ASTM A29

    BS 970
    Grade 35CrMo SCM435

    3: 4135 steel chemical composition

    Grade C Si Mn P S Cr Mo Ni
    4135 0.33-0.38 0.15-0.35 0.70-0.90 0.035 0.04 0.80-1.10 0.15-0.25 0.03
    SCM435 0.33-0.38 0.15-0.35 0.60-0.90 0.03 0.03 0.90-1.20 0.15-0.30 0.25
    35CrMo 0.32-0.40 0.17-0.37 0.40-0.70 0.035 0.035 0.80-1.10 0.15-0.25 0.30

    4: 4135 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: 4135 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  4135 is used as an important structural member for working under high loads. Such as transmission parts of vehicle and engine, rotor of steam turbine generator, main shaft, heavy load transmission shaft and large-section parts.

    6. Heat Treatment

          Annealing : Slowly heated to 850 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace to 480 ℃ follow by air cool. The 4135 alloy steel will get MAX 250 HB.

          Quenched 850℃, oil cooled. 

          Tempering 550℃, water cooled, oil cooled.

    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