O1

UNS #T31501

O1 is a manganese-chromium-tungsten, nondeforming, oil-hardening, general purpose tool and die steel which is safe to harden, even in intricate sections. It is produced from billets that are 100% acid disc inspected and ultrasonic tested, insuring sound metal in the finished bars.

Type Analysis

  • Carbon (Nominal) 0.9
  • Tungsten (Nominal) 0.5
  • Manganese (Maximum) 1.2
  • Chromium (Nominal) 0.5
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 0.2

Applications

Blanking dies, Forming dies, Lamination dies, Molding dies, Trimming dies, Broaches, Collets, Stamps, Master tools, Spindles, Master taps, Thread gauges

Applicable Specifications

  • ASTM A681

Bar

Rounds

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