ASTM A550-2006(2010) Standard Specification for Ferrocolumbium《铌铁合金的标准规格》.pdf
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1、Designation: A550 06 (Reapproved 2010)Standard Specification forFerrocolumbium1This standard is issued under the fixed designation A550; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parenth
2、eses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers three grades of ferrocolum-bium, designated Low-Alloy Steel Grade, Alloy and StainlessSteel Grade, and High-Purity Grade.1.2
3、The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A1025 Specification for Ferroalloys and Other
4、AlloyingMaterials, General RequirementsE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of SpecificationA1025, including any supple-mentary requirements that are indicated
5、in the purchase order.Failure to comply with the general requirements of Specifica-tion A1025 constitutes nonconformance with this specification.In case of conflict between the requirements of this specifica-tion and Specification A1025, this specification shall prevail.4. Chemical Composition4.1 Th
6、e material shall conform to the requirements as tochemical composition specified in Tables 1 and 2. The manu-facturer shall furnish an analysis of each shipment showing thepercentage of each element specified in Table 1.4.2 For elements specified in Table 2 an analysis of each lotis not required. Up
7、on request of the purchaser, the manufac-turer shall supply the results of an analysis for the elementsspecified in Table 2 on a cumulative basis over a periodmutually agreed upon by the manufacturer and the purchaser.5. Sizing5.1 Ferrocolumbium is available in sizes and to tolerancesshown in Table
8、3.6. Keywords6.1 columbium; ferrocolumbium; tantalum1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved Oct. 1, 2010. Published December 2010. Origi
9、nallyapproved in 1965. Last previous edition approved in 2006 as A550 06. DOI:10.1520/A0550-06R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Docu
10、ment Summary page onthe ASTM website.TABLE 1 Chemical RequirementsElement Composition, %Low-Alloy SteelGradeAlloy and StainlessSteel GradeHigh-PurityGradeColumbiumA60.070.0 60.070.0 60.070.0Tantalum, max 5.0 2.0 0.50BCarbon, max 0.5 0.3 0.10Manganese, max 3.0 2.0 0.50Silicon, max 4.0 2.5 0.40Aluminu
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