Deep cryogenic treatment of broaches at temperature levels below -300°F have shown significant improvement in extending broach life four to five times. Cryogenic treatment of these broaches has allowed the broaches to produce between four and five times the amount of parts. Broaches saw a minimum of 300%+ increase in lifetime after cryogenic treatment.

Attained from “Broaching Developments Emphasize Wear Resistance” by Mike Svetaka, Chief Engineer, Hasay-Savage Broach Co., June 1982, Machine and Tool Blue Book.