Alloy 20, UNS N08020, Carpenter 20, 20Cb-3, Incoloy Alloy 20 - Mega Mex
UNS N08020 NACE MR0175 Other common names: Carpenter 20, 20Cb-3®, Incoloy® alloy Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium austenitic alloy that was developed for maximum resistance to acid attack, specifically sulfuric acid