The properties of metal materials are generally divided into two categories: process performance and performance.
The so-called process performance refers to the performance of metal materials under the specified cold and hot processing conditions during the manufacturing process. The technical performance of metal materials determines its adaptability to processing during the manufacturing process. Due to different processing conditions, the required process properties are different, such as casting properties, weldability, forgeability, heat treatment properties, and machinability.
The so-called performance refers to the performance of metal parts under the conditions of use, including mechanical properties, physical properties, chemical properties, and the like. The performance of metal materials determines its range of use and service life.
In the mechanical manufacturing industry, general mechanical parts are used in normal temperature, normal pressure and non-strong corrosive media, and each mechanical part will be subjected to different loads during use. The resistance of metal materials to damage under load is called mechanical properties (or mechanical properties).
The mechanical properties of metal materials are the main basis for the design and selection of parts. Different applied load properties (such as tensile, compression, torsion, impact, cyclic loading, etc.), the mechanical properties required for metallic materials will also be different. Common mechanical properties include: strength, plasticity, hardness, impact toughness, multiple impact resistance and fatigue limit.