ASTM A959-2019 锻制不锈钢用说明协调标准等级构成的标准指南
ASTM A959-2019 锻制不锈钢用说明协调标准等级构成的标准指南
【英文标准名称】: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
【原文标准名称】: 锻制不锈钢用说明协调标准等级构成的标准指南
【标准号】: ASTM A959-2019
【标准状态】: 现行
【国别】:美国
【发布日期】: 2019
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: A01.17
【标准类型】: (Guide)
【标准水平】: ()
【中文主题词】: 奥氏体不锈钢;铁素体不锈钢;协调的不锈钢组成成份;马氏体不锈钢
【英文主题词】: austenitic stainless steels;Ferritic stainless steel;Harmonized stainless steel compositions;Martensitic stainless steel
【摘要】: It is anticipated that the ASTM Subcommittees A01.06, A01.10, A01.17, A01.22, and A01.28 will use the standard composition limits listed in this guide for the grades identified by the corresponding UNS designation in the product specification unless there is a specific technical justification for doing otherwise. The compositions in this guide shall not be considered as chemical requirements for any particular product until adopted by the subcommittee overseeing that product. Assuming that uniform compositions among the many product standards for stainless steel are desirable, the composition limits provided in this standard are to be used as guides in determining limits for each of the elements included in the total composition of each grade. The composition limits have been established with the intent that each product subcommittee will find it necessary to require only a minimum number of changes to reflect specific technical effects. Section 5 lists the general guidelines followed for determining the limits for each element; the limits established in this guide are based on these guidelines. Not included in this standard stainless steel grade harmonization effort is an attempt to unify stainless steel compositions in ASTM product standards by any means other than recognizing current industry practices. 1.1 This guide provides a guide to ASTM Subcommittees A01.06, A01.10, A01.17, A01.22, and A01.28 for specifying chemical composition limits of wrought stainless steels. It is intended that these recommended grade composition limits be suitable for adoption by other standardization bodies that prepare standards for stainless steel products. 1.2 Included in this guide are the recommendations for determining the number of significant figures for specifying chemical composition from Test Methods, Practices, and Terminology A751. 1.3 All stainless steel UNS numbers and the stainless steel grades in all standards overseen by the aforementioned ASTM subcommittees have been included, except those grades applicable to restricted special end uses and alloys containing less than 10.5 % minimum chromium. 1.4 Not addressed are minor composition modifications which a specific product subcommittee may find necessary to accommodate effects of normal processing or to enhance fabricability by the producer or user, or both. 1.5 Also not generally addressed (except when established by ASTM product subcommittees) is a complete rationalization of all limits, especially when such would conflict with long-standing practices and is not justified by special technical effect. 1.6 Excluded from this guide are cast material and welding filler metal.
【中国标准分类号】:
【国际标准分类号】: 77_140_20
【页数】: 8P.;A4
【正文语种】: 英文
