DIN 1.2842 / AISI O2 Tool Steel

DIN 1.2842 / AISI O2 Tool Steel

Short Description:

DIN 1.2842 / AISI O2 Tool Steel for Punches Equivalence AISI / SAE DIN / W.Nr JIS GB O2 1.2842 —- 9Mn2V+Cr Chemical Composition (%) Steel Grade C Si Mn P S Cr Mo V 1.2842 0.85 0.95 0.10 0.40 1.80 2.20 ≤ 0.030 ≤ 0.030 0.20 0.50 —- 0.05 0.15 O2 0.85 0.95 ≤ 0.50 1.40 1.80 ≤ 0.030 ≤ 0.030 ≤ 0.50 ≤ 0.30 ≤ 0.30 Dimensions Shape Thick / Dia. (mm) Width (mm) Round 8-700 / Fl...


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  • Product Detail

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    Product Tags

    DIN 1.2842 / AISI O2 Tool Steel for Punches
    Equivalence

    AISI / SAE

    DIN / W.Nr

    JIS

    GB

    O2

    1.2842

    —-

    9Mn2V+Cr

    Chemical Composition (%)

    Steel Grade

    C

    Si

    Mn

    P

    S

    Cr

    Mo

    V

    1.2842

    0.85
    0.95

    0.10
    0.40

    1.80
    2.20


    0.030


    0.030

    0.20
    0.50

    —-

    0.05
    0.15

    O2

    0.85
    0.95


    0.50

    1.40
    1.80


    0.030


    0.030


    0.50


    0.30


    0.30

    Dimensions

    Shape

    Thick / Dia. (mm)

    Width (mm)

    Round

    8-700

    /

    Flat

    1.6-200

    20-1000

    Block

    150-600

    200-1500

    Delivery Condition
    EAF+LF+VD, Hot rolled or Forged, Spheroidizing Annealed, Hardness≤220HB, Unmachined or Machined surface (Peeled, Turned, Milled, Grinded), UT 100% Passed
    Characteristics
    1. Cold work tool steel with high dimensional stability at heat treatment.
    2. Very high cracking resistance. High machinability, medium thoughness and wear resistance.
    Applications
    Tools (punches) and dies for blanking, punching and similar operations; threading and wood working tools, machine knives for the pulp, paper and metal working industries; measuring tools and plastic mould dies.
    Heat Treatment
    Annealing
    680 to 720°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 af ter annealing: Max. 220 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
    790 to 820°C
    Oil, salt bath (200 to 250°C) up to 20 mm thickness. Holding time after temperature equalization: 15 to 30 minutes. Obtainable hardness: 63 – 65 HRC
    Tempering
    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 certain cases we recommend to reduce tempering temperature and increase holdingtime.
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