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金属材料室温拉伸试验是材料力学性能试验中最普遍、最常用也是最重要的一种试验方法涉及到设计、加工、试验、使用等很多部门,是结构和零部件设计、材料研究和工艺选择、出厂检验和进料验收等的需要,,而在拉伸试验中测定的上屈服强度(R㎡)、下屈服强度(R)、抗拉强度(R)、断后伸长率(A)、断面收缩率(Z)是其主要的力学性能指标。GB/T 228《金属材料室温拉伸试验方法》标准是钢材生产检验最基本、最重要的基础标准,它阐述了力学性能试验的基本原理和试验方法等。本文主要对新旧标准的不同进行了概括分析,以使更好地指导我们的科学研究和生产检验等工作。
Tensile test of metal materials at room temperature is the most common, the most common and the most important test method in the mechanical properties of materials. It relates to the design, processing, testing, use and many other sectors. It is the structural and component design, material research and process selection , Factory inspection and feed acceptance requirements, and the tensile strength of the test (R ㎡), yield strength (R), tensile strength (R), elongation at break (A), elongation at break Section shrinkage (Z) is its main mechanical properties. GB / T 228 “tensile testing method of metal materials at room temperature” standard is the most basic and most important basic standard of steel production testing, it describes the basic principles of mechanical properties testing and test methods. This article mainly summarizes the differences between the old and new standards in order to better guide our scientific research and production inspection work.