ASTM A479 A479M-2012 Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels《锅炉和其他压力容器用不锈钢棒材和型材标准规格》.pdf
《ASTM A479 A479M-2012 Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels《锅炉和其他压力容器用不锈钢棒材和型材标准规格》.pdf》由会员分享,可在线阅读,更多相关《ASTM A479 A479M-2012 Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels《锅炉和其他压力容器用不锈钢棒材和型材标准规格》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: A479/A479M 11 A479/A479M 12 Used in USDOE-NE StandardsStandard Specification forStainless Steel Bars and Shapes for Use in Boilers andOther Pressure Vessels1This standard is issued under the fixed designation A479/A479M; the number immediately following the designation indicates the yea
2、rof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Departme
3、nt of Defense.1. Scope*1.1 This specification2 covers hot- and cold-finished bars of stainless steel, including rounds, squares, and hexagons, andhot-rolled or extruded shapes such as angles, tees, and channels for use in boiler and pressure vessel construction.2NOTE 1There are standards covering hi
4、gh nickel, chromium, austenitic corrosion, and heat-resisting alloy materials. These standards are under thejurisdiction of ASTM Subcommittee B02.07 and may be found in Annual Book of ASTM Standards, Vol 02.04.1.2 The values stated in either SI units or inch-pound units are to be regarded separately
5、 as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.3 Unless the order specifies the applicable “M” specification designatio
6、n, the material shall be furnished to the inch-poundunits.2. Referenced Documents2.1 ASTM Standards:3A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless SteelsA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA484/A484M Specification fo
7、r General Requirements for Stainless Steel Bars, Billets, and ForgingsA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsE112 Test Methods for Determining Average Grain SizeE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)2.2 SAE Do
8、cument:4SAE J 1086 Recommended Practice for Numbering Metals and Alloys3. General Requirements3.1 The following requirements for orders for material furnished under this specification shall conform to the applicablerequirements of the current edition of Specification A484/A484M.3.1.1 Definitions,3.1
9、.2 General requirements for delivery,3.1.3 Ordering information,3.1.4 Process,3.1.5 Special tests,3.1.6 Heat treatment,3.1.7 Dimensions and permissible variations,3.1.8 Workmanship, finish, and appearance,3.1.9 Number of tests/test methods,3.1.10 Specimen preparation,3.1.11 Retreatment,3.1.12 Inspec
10、tion,3.1.13 Rejection and rehearing,3.1.14 Material test report,3.1.15 Certification, and3.1.16 Packaging, marking, and loading.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United
11、States14. Other Requirements4.1 In addition to the requirements of this specification, all requirements of the current editions of Specification A484/A484Mshall apply. Failure to comply with the general requirements of Specification A484/A484M constitutes nonconformance with thisspecification.5. Che
12、mical Composition5.1 Chemical composition shall be reported to the purchaser, or his representative, and shall conform to the requirementsspecified in Table 1.5.2 When a product analysis is performed or requested by the purchaser, the tolerance limits as described in SpecificationA484/A484M apply un
13、less Supplementary Requirement S3 is invoked.5.3 Methods and practices relating to chemical analysis required by this specification shall be in accordance with Test Methods,Practices, and Terminology A751.6. Grain Size for Austenitic Grades6.1 All austenitic grades shall be tested for average grain
14、size by Test Methods E112.6.2 The H grades shall conform to an average grain size as follows:6.2.1 ASTM No. 6 or coarser for Types 304H, 309H, 310H, and 316H,6.2.2 ASTM No. 7 or coarser for Types 321H, 347H, and 348H.6.3 For S32615, the grain size as determined in accordance with Test Methods E112,
15、comparison method, Plate 11, shall be No.3 or finer.6.4 Supplementary Requirement S1 shall be invoked when nonH grade austenitic stainless steels are ordered for ASME Codeapplications for service above 1000F 540C.7. Mechanical Properties Requirements7.1 The material shall conform to the mechanical p
16、roperty requirements specified in Table 2 for the grade ordered. At least oneroom-temperature test shall be performed by the manufacturer on a sample from at least one bar or shape from each lot of material.7.2 The yield strength shall be determined by the offset (0.2 %) method as prescribed in Test
17、 Methods and Definitions A370.7.3 Martensitic material supplied in the annealed condition shall be capable of meeting the hardened and tempered mechanicalproperties when heat treated.7.4 Hardness measurements, when required, shall be made at a location midway between the surface and the center of th
18、e crosssection.7.5 Martensitic grades shall be capable of meeting the hardness requirements after heat treating as specified in Table 3.8. Corrosion Testing8.1 Austenitic stainless steels solution annealed by the alternative method shall be tested and pass the intergranular corrosiontest requirement
19、s described in S2.9. Testing for Intermetallic Compounds9.1 When specified by the purchaser in the purchase order, the manufacturer shall test the austenitic or austenitic-ferritic(duplex) stainless steel material in its final condition in accordance with supplementary test requirements S6.NOTE 2Man
20、y, if not all, duplex stainless steels and some austenitic stainless steels will form intermetallic phases or compounds such as sigma, chi,and laves phases when exposed to temperatures below the specified annealing temperature or cooled slowly from a higher temperature during casting,welding, or ann
21、ealing. These phases can have a negative effect on mechanical properties and corrosion resistance. These phases can typically be removedby correct annealing and cooling practices. The presence of these phases can be demonstrated by tests, typically involving metallography, impacttoughness, or corros
22、ion resistance, although the testing requirements may be different for different alloy grades. Such testing may or may not be routinelyperformed by the manufacturer.1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloysand is the direct resp
23、onsibility of Subcommittee A01.17on Flat-Rolled and Wrought Stainless Steel.Current edition approved May 1, 2011Nov. 1, 2012. Published June 2011November 2012. Originally approved in 1962. Last previous edition approved in 20102011 asA479/A479M 10a.A479/A479M 11. DOI: 10.1520/A0479_A0479M-11.10.1520
24、/A0479_A0479M-12.2 For ASME Boiler and Pressure Vessel Code applications see related Specification SA-479/SA-479M in Section II of that Code.3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvo
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