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SAE J404 Chemical Compositions of SAE Alloy Steels

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Product Code:SAE J404
Title:Chemical Compositions of SAE Alloy Steels
Issuing Committee:Carbon And Alloy Steels Committee
Scope:In 1941, the SAE Iron and Steel Division in collaboration with the American Iron and Steel Institute (AISI) made a major change in the method of expressing composition ranges for the SAE steels. The plan, as now applied, is based in general on narrower ladle analysis ranges plus certain product (check) analysis allowances on individual samples, in place of the fixed ranges and limits without tolerances formerly provided for carbon and other elements in SAE steels (reference SAE J408).ISTC Divison 1 has developed a procedure which allows for the maintenance of the grade list in this SAE Standard. This will involve conducting an industry-wide survey to solicit input. This survey will be conducted at a frequency deemed necessary by the technical committee. Criteria have been established for the addition to or deletion of grades from the grade table. A new grade will be considered if it meets standard SAE grade ranges, has a minimum usage or production of 225 tonnes/year (250 tons/year), and has the endorsement of at least two users or producers. New steel compositions will still be considered as Potential Standard (PS) steels, based on the guidelines provided in SAE J1081, until such time as production of the new steel achieves a level of production or usage qualifying it for consideration as a standard steel.The deletion of a grade from the grade table will be by consensus based on the grade survey results. Deleted grades will be archived in SAE J1249 for future reference.The compositions in this document may apply to open hearth and basic oxygen, or electric furnace steels. Grades shown in Table 1 with prefix letter E are normally made by the electric furnace process with maximum limits of 0.025% phosphorus and 0.025% sulfur. The nominal chemical limits or ranges in the compositions given in Table 1 are subject to standard variations in check analysis given in SAE J409. Since AISI is no longer issuing steel grade designations, all grades listed in this document are SAE grades.Table 1 is applicable to billets, blooms, slabs, plates, wire rods, and hot-rolled and cold-finished bars.SAE J404 is not applicable to the following product forms:a. Structural shapes--Not normally furnished to alloy chemistriesb. Sheet and strip, hot-rolled and cold-rolled驴Refer to ASTM A 506 and A 507c. Seamless and weldd mechanical tubing驴Refer to ASTM A 513 and A 519
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【英文标准名称】:Textiles-DeterminationoftheabrasionresistanceoffabricsbytheMartindalemethod-Part4:assessmentofappearancechange.
【原文标准名称】:织物.马尔第那达尔法测定纤维磨损抗性的测定.第4部分:表面变化评估
【标准号】:NFG07-178-4-1999
【标准状态】:现行
【国别】:法国
【发布日期】:1999-04-01
【实施或试行日期】:1999-04-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:磨损试验;磨蚀试验;布;试验;表面磨损;试验设备;表面型式;表面检验;耐磨试验仪;马丁代尔;变异性;擦伤试验;变更;耐力;精整;外观;纺织试验;抗磨损性;表面;测定;纺织材料;抗磨性;试样
【英文主题词】:
【摘要】:
【中国标准分类号】:W04
【国际标准分类号】:59_080_30
【页数】:19P;A4
【正文语种】:其他


基本信息
标准名称:少量煤样烟煤胶质层指数测定方法
中标分类: 矿业 >> 固体燃料矿 >> 固体燃料矿综合
发布日期:
实施日期:1992-08-01
首发日期:
作废日期:2004-08-17
出版日期:
页数:7页
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所属分类: 矿业 固体燃料矿 固体燃料矿综合