This is the most popular insert material, and it will satisfy most application requirements for strength, corrosion resistance and temperature capability. The inserts can be used in applications with a temperature range from -320° F to 800° F. Cold rolling the stainless steel wire to a diamond shape work-hardens it to a tensile strength above 200,000 PSI, a hardness of Rc 43-50 and a smooth 8-16 micro-inch finish. The inserts become slightly magnetic from the work-hardening that occurs during the manufacturing process (approx. 2-10 G/O). The insert material is covered by specifications AS7245, NASM8846 and alloy number UNS S30400.