Industeel SIRIUS S15 Rare Earth Containing Heat Resistant Steel

CLI SIRIUS S15 grade is a fully austenitic stainless steel containing 21 Cr, 1.7 Si, 0.17 N and Rare Earth elements (Cerium, Lanthanum,...etc) which make the alloy particularly well designed for high temperature applications. The nitrogen additions stabilize the austenitic microstructure, particularly at high temperatures. The alloy is less susceptible to embrittlement effects occurring after long term exposure. Creep properties are enhanced, due to high Chromium and Nitrogen. Rare Earth elements (Ce, La,...) are added in order to anchor the oxide protective film and improve the resistance of the steel to oxide spalling. As a result, the alloy is much more resistant to high temperature thermal cycling effects in oxidizing atmospheres compared to 310. CLI SIRIUS S15 grade may be used up to 1100°C (2012°F in oxidizing environments. Thermal cycling effects, sulphur containing atmospheres and low oxygen contents reduce the high temperature resistance of the steel.>Information provided by manufacturer.