ASTM A959-2019 鍛制不銹鋼用說明協調標準等級構成的標準指南

【英文標準名稱】: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
【原文標準名稱】: 鍛制不銹鋼用說明協調標準等級構成的標準指南
【標準號】: ASTM A959-2019
【標準狀態】: 現行
【國別】:美國
【發布日期】: 2019
【實施或試行日期】:
【發布單位】: 美國材料與試驗協會(US-ASTM)
【起草單位】: A01.17
【標準類型】: (Guide)
【標準水平】: ()
【中文主題詞】: 奧氏體不銹鋼;鐵素體不銹鋼;協調的不銹鋼組成成份;馬氏體不銹鋼
【英文主題詞】: 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.
【中國標準分類號】:
【國際標準分類號】: 77_140_20
【頁數】: 8P.;A4
【正文語種】: 英文

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