For long term service, it is best restricted to a maximum of 593°C, because long term exposure above 593°C will result in significant embrittlement.
Ukuze inkonzo njalo okwesikhathi eside, kungcono kuvinjelwe lungene 593 °C, ngoba esikhathini eside ukuchayeka ngenhla 593 °C kuzoholela embrittlement abalulekile.