Starrett 54118 Precision Ground Flat Stock 3/8" x 3/4" x 18" AISI O1 Tool Steel

The Starrett 54118 is a precision ground flat stock made from AISI O1 oil-hardening tool steel, measuring 3/8" thick x 3/4" wide x 18" long. This high-quality tool steel is ideal for toolmakers, machinists, and fabricators who require dimensionally stable material for precision work.

Key Features:

• AISI O1 oil-hardening tool steel for superior performance and durability
• Precision ground to tight tolerances for accuracy
• Dimensionally stable during heat treatment with minimal distortion
• Excellent for intricate work including thin sections with minimal risk of cracking
• Hardness range: 60-65 HRC when properly heat treated
• Can be machined in annealed condition and hardened for final use

O1 tool steel is one of the most popular and versatile tool steels available, offering a good balance of wear resistance, toughness, and ease of machining. This precision ground flat stock is ready for use in making custom tooling, jigs, fixtures, gauges, punches, dies, and other precision components where dimensional accuracy and stability are critical.