SNV DIN 17221:1988被替代
Hot Rolled Steels For Springs Suitable For Quenching And Tempering; Technical Delivery Conditions
出版：Swiss Standards
专家解读视频
基本信息
标准编号： SNV DIN 17221:1988
标准类别：Standard
出版单位：Swiss Standards
标准页数：0
标准简介
Applies for not rolled bars, ribbed and grooved spring steel, wire rod, wide flats, strip and semi-finished products of spring steels. The standard specifies the requirements concerning e.g. manufacturing process, heat treatment and surface conditions at the time of delivery, chemical composition, maximum hardness, hardenability, inner and outer soundness. The standard includes specifications for testing and marking the products.
