Starrett 54180 AISI O1 Tool Steel Flat Stock 5/8" x 3-1/2" x 18"

The Starrett 54180 is precision-ground AISI O1 oil-hardening tool steel flat stock measuring 5/8" thick x 3-1/2" wide x 18" long. This premium grade tool steel is ideal for manufacturing cutting tools, dies, gauges, and precision machine components.

Key Features:

• AISI O1 oil-hardening tool steel for superior edge retention and wear resistance
• Dimensionally stable during heat treatment, minimizing warping and distortion
• Excellent for intricate work and thin sections with minimal cracking risk
• Precision-ground to tight tolerances for immediate use
• Versatile material suitable for jigs, fixtures, punches, and custom tooling
• Can be hardened to approximately 57-62 HRC for demanding applications

O1 tool steel is one of the most popular and versatile cold-work steels, offering an excellent balance of toughness, machinability, and hardness. The oil-quenching process provides uniform hardness while maintaining dimensional accuracy, making it the preferred choice for precision toolmakers and machinists.