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GB 20CrMn | DIN 20MnCr5 / 1.7147 Engineering Steel

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20CrMn engineering steel, 1.7147 engineering steel, 1.7147 alloy tool steel, 1.7147 alloy steel, 1.7147 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


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    1: DIN 1.7147 steel introduction

          1.7147 is a European standard carburized steel (surface hardening steel) with high strength toughness and good hardenability. Small quenching deformation, low temperature toughness and good machinability, but low welding performance. It is generally used after carburizing, quenching or quenching and tempering.

    2: DIN 1.7147 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 20CrMn
    20MnCr5 / 1.7147

    3: DIN 1.7147 steel chemical composition

    Grade C Si Mn P S Cr
    20MnCr5 / 1.7147 0.17-0.22 0.40 0.10-0.40 0.035 0.035 1.00-1.30
    20CrMn 0.17-0.23 0.17-0.37 0.90-1.20 / / 0.90-1.20

    4: DIN 1.7147 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: DIN 1.7147 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  1.7147 steel is used in the manufacture and reassembly of large section tempered parts and small section carburized parts. It can also be used to manufacture medium load, low impact small and medium parts, such as gears, shafts, main shafts, friction wheels and gears of variable speed equipment, sleeve of governor, etc.

    6. Heat Treatment

         Hot working temperature / ℃ : 1150 - 850

         Annealing temperature / ℃ : 650 - 700;  Hardness after annealing : 217 HBS

         Quenching (center) temperature / ℃ : 850 - 880

         Quenching (surface) temperature / ℃ : 810 - 840

         Tempering / ℃ : 170 - 210

    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