A-2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A-2

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AISI A-2

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This page is mainly introduced the A-2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A-2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ADVANTAGES:
Good combination of wear resistance and toughness. Very stable in heat treatment.
Not difficult to machine or grind.
Good Hardenability.
AVAILABILITY
Readily available
MACHINABILITY
A-2 can be machined readily in the fully annealed condition. Its machinability rating is about 65% of a 1% carbon tool steel. It also has a high grindability rating.
ANNEALING
Heat slowly to 1500 to 1600°F and furnace cool, allowing the temperature to drop about 75°Fper hour to 1000°F. Then air cool. The annealed hardness is 202 to 248 Brinell.

HARDENING

A-2 should be preheated at 1200° to 1300°F then taken up to 1725° to 1750°F. When part is at temperature it should be soaked 30 minutes for the first inch of thickness and 15 minutes for each inch of thickness over one inch. If a controlled atmosphere or vacuum furnace is not available then part should be wrapped in stainless foil to prevent decarburization. When the piece is taken from the furnace the stainless foil must be removed (if applicable) and then cooled in still air. Large pieces may require forced air.

TEMPERING

As soon as pieces have been cooled to room temperature (100° to 125°F) tempering must begin. Heat slowly to the tempering temperature selected to obtain the hardness desired. Double tempering is recommended.

AISI A-2  Tempering Temperature


  • Steel Garde:A-2
  • Type:Tool Steels & Die Steels
  • Country:USA
  • Standard:AISI
  • Application:Applied to the thermosetting plastic mold, the hardened mould as a whole

Relevant products:

  • IncoloyA-286 / GH 2132

    IncoloyA-286 / GH 2132

  • Chemical composition(mass fraction)(wt.%)

    Elements Min.(≥) Max.(≤)
    C 0.95  1.05
    Si   1.00
    Mn   0.50
    Cr 4.75  5.50
    Mo 0.90  1.40
    V 0.15  0.50
    Ni   0.30

    Mechanical Properties

    Tensile strength 137~295 σb/MPa
    Yield Strength 987 σ 0.2 ≥/MPa
    Elongation 34 δ5≥(%)
    ψ - ψ≥(%)
    Akv - Akv≥/J
    HBS 749~443 -
    HRC 30 -

    Physical Properties

    Thermal expansion 81-12 e-6/K
    Thermal conductivity 87-58 W/m.K
    Specific heat 450-460 J/kg.K
    Melting temperature 2974-6874 째C
    Density 6085-4619 kg/m3
    Resistivity 0.50-0.60 Ohm.mm2/m
         

    Heat Treatment Regime

    Annealing

    Quenching

    Tempering

    Normalizing

    Q & T

    Size Availability

    Steel Grade Specification Processing range(mm)
    A-2 Tool Steels & Die Steels Round Bar and Hollow Bar Φ1 to Φ2000
    Square and Flat Steel Φ10 to Φ100
    Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
    Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
    Coil and Strip Steel THK:0.1mm Width:1500mm
    Forged Ring/Cylindrical/Disk

    Technical specification/standard for download

    Hot keywords:AISIA-2
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