RA330®

Rolled Alloys and our RA330® alloy were both created to service the need of the thermal process industries for a reliable source of a wrought alloy that could handle the rigors high temperature carburizing conditions and repeated quenching. Both our company and our RA330® alloy product began as parts of the Michigan Steel Castings Company (MISCO). The predecessor to RA330® was an alloy known as MISCO metal, it was a rolled version of the cast HT alloy and 35% nickel, 15% chromium. Its success came as a replacement to castings which were less ductile and fractured during harsh temperature cycling.

In 1953, Rolled Alloys became an independent company and MISCO metal became RA330® alloy. Over the past 60 years, we have applied our knowledge and close working relationship with the thermal process industry to modify RA330® to optimize its performance. These efforts include adjusting its chemistry to its current 35% nickel, 19% chromium, 1.25% silicon and controlled production techniques to ensure a product that has the optimal microstructure to withstand repeated thermal cycling.