The workhorse of the austenitic heat resistant alloys. With a high melting point, the alloy demonstrates good strength combined with outstanding carburisation and oxidation resistance up to 1150°C.
These properties are enhanced by a nominal 1.25% Silicon addition.
RA330® has been designed to withstand the thermal shock of liquid quenching. This alloy finds wide application in high temperature industrial environments, where good resistance to the combined effects of carburisation and thermal cycling is a prime requisite.
RA330® remains fully austenitic at all temperatures and is not subject to embrittlement from sigma phase formation.