T-PUT Thermanit 17 description: Stainless; corrosion-resistant similar to matching 17 % Cr steels/cast steel grades (seawater, diluted organic and inorganic acids). Resistant to scaling in air and oxidizing combustion gases up to 950 C (1742 F) and particularly, in sulphureous combustion gases at elevated temperatures. For joining and surfacing work on matching ferritic and similar quenchable and temperable Cr steels/cast steel grades. Lowest possible heat input is required as ferritic 17 % Cr steels are susceptible to embrittlement due to coarse grain growth. Often used only for final passes on tougher austenitic fill layers, above all in sulphureous combustion gases.