W77T6-P®

W77T6-P® is Winsert’s flagship patented alloy. W77T6-P® is a high carbon, high speed steel type iron-base alloy with excellent wear resistance and yield strength for heavy duty exhaust applications. This material is a significant upgrade to traditional M2 type tool steels and high chromium type nickel-base alloys as well as a replacement for traditional commercial cobalt-base alloys. The success of this alloy is a combination of excellent wear resistance, high thermal conductivity, and high yield strength. Over 25,000,000 W77T6-P® valve seat inserts have been sold to our OEM partners since 1996.