A2 Steel

AISI A2 tool steel is A group cold works steel in ASTM A681 standard. A2 Tool Steel is a versatile, air hardening chromium alloy tool steel that replaces O1 tool steel when safer hardening, less distortion and increased wear resistance are required. AISI type A2 steel is intermediate in wear resistance between O1 oil-hardening tool steel and D2 high-carbon, high-chromium tool steel

AISI Steel A2 is heat treatable and will offer a hardness in the range 57-62 HRC. ASTM grade A2 steel delivers good toughness with medium wear resistance and is relatively easy to machine. Tool Steels A2 are used in many applications which require good wear resistance as well as good toughness.

Applications for AISI/ASTM A2 steels materials

  • Blanking dies
  • Block and Ring gauges
  • Coining
  • Cold forming
  • Cold trimming and Forming dies
  • Cold shears
  • Rolls
  • Knurls and Knurling tools
  • Machine parts
  • Mandrels
  • Punches and Punch plates
  • Reamers
  • Shear and Slitter blades
  • Stamping dies
  • Threading tapes

    • USA

    ASTM
    A681

    A2/T30102

    German

    DIN EN ISO 4957

    1.2363/X100CrMoV5

    Japan

    JIS
    G4404

    SKD12

    British

    BS
    4659

    BA2

    Grade C Mn P S Si Cr V Mo
    A2/T30102 0.95 - 1.05 0.40 - 1.00 0.03 0.03 0.10 - 0.50 4.75 - 5.50 0.15 - 0.50 0.90 - 1.40
    1.2363/X100CrMoV5 0.95 - 1.05 0.40 - 0.80 0.03 0.03 0.10 - 0.40 4.80 - 5.50 0.15 - 0.35 0.90 - 1.20
    SKD12 0.95 - 1.05 0.40 - 0.80 0.03 0.03 0.10 - 0.40 4.80 - 5.50 0.15 - 0.35 0.90 - 1.20
    BA2 0.95 - 1.05 0.30 - 0.70 0.035 0.035 0.40 4.75 - 5.25 0.15 - 0.40 0.90 - 1.10