Complex sentence: All types of stainless steel resist attack from phosphoric acid, types 316 and 317 more so than 304; types 304L and 430 have been successfully used with nitric acid.
Split into simpler sentences: All types of stainless steel resist attack by phosphoric acid, Types 316L and 317L more so than 304L. Types 304L and 430 have been successfully used with nitric acid.