Materials
Over the years, Fastco has used a wide range of carbon, alloy,
and stainless steels. Carbon steels range from 1008-1045 and
include 1541 and 10b21. Alloy steels commonly utilized in
manufacturing include 4140, 4135, and 4037. Stainless
applications include 302 HQ, 304, and 410. In addition, for
many years Fastco has produced components for exhaust flange
applications that utilize both A286 (ASTM 660) and 431 grades of
stainless steel.