A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

A high molybdenum content allows these tool steels to maintain sharp cutting edges even at elevated temperatures. Use them to make high-speed cutting tools. Choose from M2, M42, M4, and M50 tool steels.

When compared to other tool steels, these have a higher silicon content, which makes them less likely to fracture when exposed to shock. They're often made into punches, chisels, and rivets. Choose from S7 and S2 tools steels.

Offering a good balance of corrosion resistance, formability, and weldability. Multipurpose stainless steel includes 301, 303, 304, 430, and Nitronic 60.

Especially suited for corrosive applications, such as those involving salt water, chemicals, and acids. Highly corrosion-resistant stainless steel includes 316, 2205, Alloy 20, and Nitronic 50.

Combine with gears, sprockets, and bearings to transmit rotary motion. Commonly known as drive shafts, rotary shafts are generally not hardened, which makes them easier to machine to fit mating components.