Starrett 54459 AISI O1 Tool Steel Flat Stock 9/16" x 1-1/2" x 36"

The Starrett 54459 is a precision flat stock bar made from AISI O1 oil-hardening tool steel, measuring 9/16" thick x 1-1/2" wide x 36" long. This high-quality tool steel is ideal for manufacturing cutting tools, jigs, fixtures, gauges, and precision components that require excellent dimensional stability.

Key Features:

• AISI O1 oil-hardening tool steel composition for superior wear resistance
• Dimensionally stable through heat treatment processes
• Excellent for intricate work and components with thin sections
• Minimal risk of cracking or warping during hardening
• Precision ground flat stock for accurate machining
• Can be hardened to Rockwell C 57-62 for maximum durability

O1 tool steel is known for its ease of machining in the annealed state and excellent hardening characteristics. It offers a balanced combination of wear resistance, toughness, and dimensional stability, making it a preferred choice for tool and die makers. The oil-quench hardening process provides deep hardening with minimal distortion.