Grade A2

A2 tool steel is a versatile air-hardening, medium-alloy cold-work tool steel known for its excellent combination of wear resistance, toughness, and dimensional stability. Positioned between O-series (oil-hardening) and D-series (high-chromium) steels, A2 is one of the most widely used grades in industrial tooling due to its balanced mechanical properties and reliable performance.

One of the key advantages of A2 is its air-hardening capability, which significantly reduces distortion and warping during heat treatment. This makes it highly suitable for precision tools, dies, and components where maintaining tight tolerances is critical. It also simplifies the heat treatment process compared to oil-hardening steels.

Tool Steel

A2 achieves a hardness range of 56–62 HRC after heat treatment, providing strong wear resistance while maintaining better toughness than high-carbon, high-chromium steels like D2. This balance makes A2 ideal for applications involving both abrasion and moderate impact, where excessive brittleness could be a concern.

Due to its consistent performance, good machinability in the annealed condition, and excellent stability, A2 tool steel is widely used in stamping, forming, cutting, and general engineering applications. It remains a preferred choice for manufacturers seeking durability, precision, and cost-effective tooling solutions.

Key Properties

  • Air-Hardening (Low Distortion): Hardens in still air, minimizing warping and distortion. Ideal for precision dies and close-tolerance tools.
  • High Hardness (56–62 HRC): Provides strong wear resistance while maintaining good toughness.
  • Excellent Toughness: Tougher than D2 and other high-chromium steels, suitable for combined impact and wear applications.
  • Good Wear Resistance: Higher than O1 and S-series steels, suitable for medium-to-high wear environments.
  • Dimensional Stability: Minimal size change during heat treatment ensures high precision.
  • Good Machinability: Easy to machine in annealed condition, reducing manufacturing cost and time.

Common Applications

  • Blanking and stamping dies
  • Forming dies and bending tools
  • Shear blades
  • Industrial cutting knives
  • Punches and die inserts
  • Jigs, fixtures, and gauges
  • Woodworking tools (chisels, blades)
  • Cold-working rolls and tools
  • Coining and embossing dies

PUROHIT STEEL is a trusted name in the tool steel industry, with humble beginnings dating back to 1965 and over three decades of expertise in delivering high-quality materials and solutions. Today, the group operates multiple well-established units, maintaining a vast inventory ranging from hot work and cold work tool steels to specialized materials. Known for reliability and strong technical support, PUROHIT STEEL caters to the diverse requirements of small, medium, and large-scale industries. The company specializes in manufacturing moulds and tooling components using premium grades such as Grade A2 which is ideal for applications including injection moulds (medium to large size), blow moulds, low-pressure die-casting dies, automotive moulds, tooling plates, extrusion dies, machine parts, shafts, and general tooling components. With a focus on quality, performance, and precision, PUROHIT STEEL continues to deliver durable and efficient tooling solutions.