Sample did not meet the chemical requirements for UNS N08330 (RA330) heat-and corrosion-resistant alloy (Ni-Fe-Cr alloy). Higher carbon was detected, perhaps due to diffusion of carbon into the steel during operation. However, away from the nozzle tip where it was not exposed to high radiant heat, the carbon content was also measured at 0.41%. This suggests that the nozzle may have contained higher carbon when it was new. Higher carbon content than specified maximum is detrimental in oxidation and corrosion resistance. Over a period of time, the higher carbon in the steel may have combined with chromium and reduced its ductility, resulting in reduced fatigue strength