Attributes . Ideal for use in ammonia, acetylene and vinyl monomers which are unstable in the presence of copper - contains NO coopper or graphite. Therefore can be used in applications that prohibit the presence of cooper. Used extensively in refineries, chemical plants, petro-chemical plants, power generation facilities. Burner tips, furnace hinges, heat exchangers, reactor bolts, manifolds, manhole studs, sliding surfaces, keyways and bushings. . Names