，总结该标准的要求
Summary of GB/T4240-1993 Stainless Steel Wire
GB/T4240-1993 is a technical specification for stainless steel wire established by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China. The specification defines the requirements, test methods, inspection rules and packaging, marking, and quality certificates of stainless steel wire.
This specification is applicable to the manufacturing of stainless steel wires with a cross-sectional diameter of 0.8mm~5.5mm. Stainless steel wire is widely used in construction, industry and other fields. The chemical composition of stainless steel wire should be in accordance with the requirements of national standards such as GB/T1220-1992 Stainless Steel Bars. The mechanical properties of stainless steel wire should meet the requirements of GB/T4240-1993. The surface of the stainless steel wire should be smooth, without burrs; and the outer surface should not have a significant deviation in color and luster. The wire rod should have no cracks, white spots, and foreign matter.
The product inspection shall conform to the requirements of GB/T 4240-1993. Test items include tensile strength, elongation, wrap test, general appearance, coil wire test, and metals other than iron and steel; while inspection items include torsional strength test, wrapping test, microstructure test and metal corrosion test. According to the standard, the finished stainless steel wire should meet the requirements of surface quality, size and product appearance. Moreover, the product packaging should be based on customer requirements, and a quality certificate can be punlished for customers.
In conclusion, GB/T4240-1993 technical specifications for stainless steel wire give producers clear requirements for the product surface finish, chemical composition, mechanical properties and other aspects. It provides a reliable guarantee for the safety and quality of stainless steel wire.
