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ASTM A182-2021 pdf free download

ASTM A182-2021 pdf free download.Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
1. Scope
1.1 This specification covers forged low alloy and stainless steel piping components for use in pressure systems. Included are flanges, fittings, valves, and similar parts to specified dimensions or to dimensional standards, such as the ASME specifications that are referenced in Section 2. 2 1.2 For bars and products machined directly from bar or hollow bar (other than those directly addressed by this speci ­ fication; see 6.4), refer to Specifications A479/A479M, A739, or A511/A511M for the similar grades available in those specifications. 1.3 Products made to this specification are limited to a maximum weight of 10 000 lb [4540 kg]. For larger products and products for other applications, refer to Specifications A336/A336M and A965/A965M for the similar ferritic and austenitic grades, respectively, available in those specifica ­ tions. 1.4 Several grades of low alloy steels and ferritic, martensitic, austenitic, and ferritic-austenitic stainless steels are included in this specification. Selection will depend upon design and service requirements. Several of the ferritic/ austenitic (duplex) grades are also found in Specification A1049/A1049M. 1.5 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order. 1.6 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “ M ” specification designation (SI units), the mate ­ rial shall be furnished to inch-pound units. 1.7 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.8 This international standard was developed in accor ­ dance with internationally recognized principles on standard ­ ization established in the Decision on Principles for the Development of International Standards, Guides and Recom ­ mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Ordering Information
4.1 It is the purchaser ’ s responsibility to specify in the purchase order information necessary to purchase the needed material. In addition to the ordering information guidelines in Specification A961/A961M, orders should include the follow ­ ing information: 4.1.1 Additional requirements (see 7.2.1, Table 2 footnotes, 9.3, and 19.2), and 4.1.2 Requirement, if any, that manufacturer shall submit drawings for approval showing the shape of the rough forging before machining and the exact location of test specimen material (see 9.3.1).
5. General Requirements
5.1 Product furnished to this specification shall conform to the requirements of Specification A961/A961M, including any supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of Specification A961/A961M constitutes nonconformance with this specification. In case of conflict between the requirements of this specification and Specification A961/A961M, this specification shall prevail.
8. Chemical Composition
8.1 A chemical heat analysis in accordance with Specifica ­ tion A961/A961M shall be made and conform to the chemical composition prescribed in Table 2. 8.2 Grades to which lead, selenium, or other elements are added for the purpose of rendering the material free-machining shall not be used. 8.3 Starting material produced to a specification that spe ­ cifically requires the addition of any element beyond those listed in Table 2 for the applicable grade of material is not permitted. 8.4 Steel grades covered in this specification shall not contain an unspecified element, other than nitrogen in stainless steels, for the ordered grade to the extent that the steel conforms to the requirements of another grade for which that element is a specified element having a required minimum content. For this requirement, a grade is defined as an alloy described individually and identified by its own UNS designa ­ tion or Grade designation and identification symbol in Table 2. 8.5 Product Analysis — The purchaser may make a product analysis on products supplied to this specification in accor ­ dance with Specification A961/A961M.

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