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Which grade of stainless steel is known as acid proof steel?(a) AISI 304(b) AISI 316(c) SIS 2333(d) SIS 2359This question was addressed to me in an online quiz.The question is from Pipes, Valves and Fittings in chapter Building Blocks of Dairy Processing of Dairy Engineering

Answer»

The correct ANSWER is (b) AISI 316

Easy explanation: For HYGIENIC reasons, all product-wetted parts of dairy equipment are MADE of stainless steel. Two main grades are used, AISI 304 and AISI 316. The latter grade is often called ACID proof steel.



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