Grade A2
Grade A2 is an air-hardening, medium-alloy cold-work tool steel known for its excellent balance of wear resistance, toughness, and dimensional stability. It sits between O-series (oil-hardening) and D-series (high-chromium) tool steels—making it one of the most commonly used tool steels in modern industrial tooling.
A2 provides better wear resistance than O1 and better toughness than D2, making it a versatile and reliable option for a wide range of cutting, forming, and stamping applications.
Key Properties of A2 Tool Steel
1. Air-Hardening (Low Distortion)
A2 hardens in still air, which reduces warping and distortion compared to oil-hardening steels. Ideal for precision tools and dies that require tight dimensional tolerances.2. High Hardness (56–62 HRC)
After heat treatment, A2 achieves a hardness range of 56–62 HRC, providing strong wear resistance while maintaining toughness.3. Excellent Toughness
A2 is tougher than D2 and other high-chromium tool steels, making it suitable for impact + wear applications.4. Good Wear Resistance
Not as high as D2, but significantly better than O1 and S-series grades. A2 performs well in medium-to-high wear environments.5. Good Stability During Heat Treatment
Minimal size change makes A2 suitable for tools requiring precise final dimensions.6. Good Machinability in Annealed Condition
A2 is easy to machine before hardening, reducing production cost and time.Common Applications
A2 is highly versatile and widely used across stamping, forming, wood processing, and general engineering industries. Typical applications include:
1. Blanking & stamping dies
2. Forming dies & bending tools
3. Shear blades
4. Industrial cutting knives
5. Punches & die inserts
6. Jigs, fixtures, and gauges
7. Woodworking blades & chisels
8. Cold-working rolls & tools
9. Coining and embossing dies