Stellite is the brand name of a hardfacing alloy which is widely used for valve seats, especially for valves subjected to abrasive service.
It is made by a company whose name is Stellite Coatings in the USA and Deloro Stellite in the rest of the world. They know their product better than anybody else. Get in touch with them and ask them. They'll be pleased to solve your doubt.
Phone number of Stellite Coatings, located in Goshen, IN is: 574-534-2585. www.stellite.com
Giovanni S. Crisi
Sao Paulo - Brazil