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ASTM 4145 Engineering 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: AISI 4145 steel introduction
        4145 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched & Tempered Hardenss is 28-34 HRc.4145 Annealing delivery hardenss less than 250HB.
        ASTM 4145 Alloy structural steel, we can supply the 4145 round bar, steel flat bar, plate, hexagonal steel bar and steel square block. 4145 steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. 4145 Rectangular pieces can be sawn from flat bar or plate to your specific sizes.
    2: AISI 4145 Steel equivalent
    Country China Japan Germany USA British
    Standard GB/T 3077 JIS G4105 DIN (W-Nr.)
    EN 10250
    ASTM A29
    BS 970
    Grade / / / 4145

    3: AISI 4145 steel chemical composition
    Grade C Si Mn P S Cr Mo
    42CrMo 0.43-0.48
    ≤ 0.035
    ≤ 0.04
    4: AISI 4145 steel mechanical properties(for guidance only)

        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 4145 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 AISI 4145 is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip,4145 can also be used to under 2000 m deep well of oil drill pipe joint and the fishing tool, and can be used for bending machine mould, etc

    6: 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.