Starrett 54690 A2 Tool Steel Flat Stock 3/4" x 4" x 36"

The Starrett 54690 is a precision-ground flat stock bar made from AISI A2 tool steel, measuring 3/4 inch thick by 4 inches wide by 36 inches long. This air-hardening steel is ideal for toolmaking, die work, and precision machining applications where dimensional stability and wear resistance are critical.

Key Features:

• AISI A2 tool steel with 5% chromium content for superior wear and abrasion resistance
• Air-hardening composition eliminates distortion during heat treatment
• Precision-ground flat stock ensures tight dimensional tolerances
• Excellent machinability in the annealed condition
• Retains hardness at elevated temperatures up to 400°F
• Ideal for punches, dies, cutting tools, and wear-resistant components

A2 tool steel is one of the most versatile air-hardening steels available, offering an excellent balance of toughness and wear resistance. The 5% chromium content provides enhanced abrasion resistance while maintaining good machinability before hardening. This flat stock can be heat treated to achieve hardness levels of 57-62 HRC, making it suitable for demanding tooling applications.