DIN 1.2083 / AISI 420 Forged Blocks

DIN 1.2083 / AISI 420 Forged Blocks

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Description DIN 1.2083 / AISI 420 Steel Forged Blocks for Plastic Mould Making Equivalence AISI / SAE DIN / W.Nr JIS GB 420 1.2083 SUS420J2 4Cr13 Chemical Composition (%) Steel Grade C Si Mn P S Cr 1.2083 0.36 0.42 ≤ 1.00 ≤ 1.00 ≤ 0.030 ≤ 0.030 12.50 14.50 420 ≤ 0.15 ≤ 1.00 ≤ 1.00 ≤ 0.030 ≤ 0.030 12.00 14.00 4Cr13 0.36 0.45 ≤ 0.60 ≤ 0.80 ≤ 0.030 ≤ 0.030 12.00 14.00 Dimensions Thickness (mm...


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  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

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    Description
    DIN 1.2083 / AISI 420 Steel Forged Blocks for Plastic Mould Making
    Equivalence

    AISI / SAE

    DIN / W.Nr

    JIS

    GB

    420

    1.2083

    SUS420J2

    4Cr13

    Chemical Composition (%)

    Steel Grade

    C

    Si

    Mn

    P

    S

    Cr

    1.2083

    0.36
    0.42


    1.00


    1.00


    0.030


    0.030

    12.50
    14.50

    420


    0.15


    1.00


    1.00


    0.030


    0.030

    12.00
    14.00

    4Cr13

    0.36
    0.45


    0.60


    0.80


    0.030


    0.030

    12.00
    14.00

    Dimensions

    Thickness (mm)

    Width (mm)

    Length (mm)

    150-600

    200-1500

    2000-5800

    Delivery Condition
    EAF+LF+VD+(ESR), Forged, Unmachined or Machined surface, UT 100% Passed
    We offer two conditions as
    Annealed: Hardness≤235HB
    Q+T: Hardness 33-38HRC or as customized
    Characteristics
    Martensite stainless steel, with good machincability and excellent corrosion resistance, polishability, and high strength and wear resistance after heat treatment.
    Application
    It is widely used for making plastic moulds and transparent plastic molds which require high load, wear resistance, and work under the action of corroding medium.
    Forging Technique

    Heat
    Temperature

    Start Forging
    Temperature

    Finish Forging
    Temperature

    Cooling Method

    Slowly heat to 800°C,
    then quickly heat to finaL forging temperature

    1160 – 1200°C

    >=850°C

    Ash coolinor sand cooling, with timely annealing

    Heat Treatment
    Annealing
    840 to 870°C
    Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air. Hardness after annealing: max. 229 HB.
    Stress relieving
    Approx. 650°C
    Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 – 2 hours.
    Hardening
    1000 to 1050°C / Oil, air
    Holding time after temperature equalization: 15 to 30 minutes.
    Obtainable hardness: 53-56 HRC
    Tempering
    100 to 200°C (212 to 392°F)
    Slow heating to tempering temperature immediately after hardening / time in furnace
    1 hour for each 20 mm of work piece thickness but at least 2 hours / cooling in air.
    For average hardness figures to be obtained please refer to the tempering chart.
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