Third edition. The third edition of Metal Materials and Heat Treatment is a book published by Machinery Industry Press 202 1. The author is Jin Sheng. This book mainly talks about the overview of metal materials and machinery manufacturing technology, metal properties, crystal structure and crystallization of metals, iron-carbon alloys, non-alloy steels, steel, low-alloy steels and alloy steels, cast iron, non-ferrous metals and their alloys, powder metallurgy, non-metallic materials, metal corrosion and protection methods, introduction of new materials, material selection and analysis, etc.