Which of the following materials is/are widely used for phosphoric acid?
(a) 316 stainless steel
(b) Durimet 20
(c) Neither 316 stainless steel nor Durimet 20
(d) Both 316 stainless steel and Durimet 20
This question was posed to me in exam.
I need to ask this question from Mineral Acids in section Mineral Acids of Corrosion Engineering