A2

UNS #T30102

A2 is an air hardening tool steel capable of being hardened throughout, even in heavy sections. It displays good Balance between hardness and toughness and is used in applications which require extreme accuracy and safety in hardening, and when the sections are heavy. Available as a DeCarb-Free product.

Type Analysis

  • Carbon (Nominal) 1
  • Silicon (Maximum) 0.3
  • Manganese (Maximum) 0.8
  • Chromium (Nominal) 5.25
  • Molybdenum (Nominal) 1.1
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 0.2

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Applicable Specifications

  • ASTM A681
  • QQ-T-570

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