1.6 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.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. ASTM A182/A182M Referenced Documents
2.1 In addition to the referenced documents listed in Specification A961/A961M, the following list of standards apply to this specification.
2.2 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A275/A275M Practice for Magnetic Particle Examination of Steel Forgings
A336/A336M Specification for Alloy Steel Forgings for Pressure and High-Temperature Parts
A388/A388M Practice for Ultrasonic Examination of Steel Forgings
A479/A479M Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings
A739 Specification for Steel Bars, Alloy, Hot-Wrought, for Elevated Temperature or Pressure-Containing Parts, or BothA763 Practices for Detecting Susceptibility to Intergranular Attack in Ferritic Stainless Steels
A788/A788M Specification for Steel Forgings, General Requirements
A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
A961/A961M Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
A965/A965M Specification for Steel Forgings, Austenitic, for Pressure and High Temperature Parts
A1049/A1049M Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
A1084 Test Method for Detecting Detrimental Phases in Lean Duplex Austenitic/Ferritic Stainless Steels E92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials
E112 Test Methods for Determining Average Grain Size
E165/E165M Practice for Liquid Penetrant Examination for General Industry
E340 Practice for Macroetching Metals and Alloys
2.3 ASME Standards:
B16.11 Forged Steel Fittings, Socket Welding, and Threaded
2.4 ASME Boiler and Pressure Vessel Code: 4 Section IX
2.5 AWS Specifications 5
A5.4/A5.4M Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding
A5.5/A5.5M Specification for Low-Alloy Steel Electrodes for Shielded Metal Arc Welding
A5.9/A5.9M Specification for Bare Stainless Steel Welding Electrodes and Rods
A5.11/A5.11M Specification for Nickel and Nickel-Alloy Welding Electrodes for Shielded Metal Arc Welding
A5.14/A5.14M Specification for Nickel and Nickel-Alloy Bare Welding Electrodes and Rods
A5.23/A5.23M Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
A5.28/A5.28M Specification for Low-Alloy Steel Electrodes for Gas Shielded Arc Welding
A5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored Arc Welding
3. ASTM A182/A182M Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Specification A961/A961M.
3.2 Definitions ofTerms Specific to This Standard:3.2.1 hardened condition, n—for F23, the metallurgical condition achieved after normalizing and cooling to room temperature but prior to tempering.
4. ASTM A182/A182M 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 following 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. ASTM A182/A182M 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.
6. ASTM A182/A182M Manufacture
6.1 The low-alloy ferritic steels shall be made by the open-hearth, electric-furnace, or basic-oxygen process with the option of separate degassing and refining processes in each case.
6.2 The stainless steels shall be melted by one of the following processes: (a) electric-furnace (with the option of separate degassing and refining processes); (b) vacuum furnace; or (c) one of the former followed by vacuum or electroslag-consumable remelting. Grade F XM-27Cb may be produced by electron-beam melting.
6.3 A sufficient discard shall be made to secure freedom from injurious piping and undue segregation.
6.4 The material shall be forged as close as practicable to the specified shape and size.
6.4.1 Flanges of any type, elbows, return bends, tees, and header tees shall not be machined directly from bar stock.
6.4.2 Cylindrically-shaped parts may be machined from forged or rolled solution-annealed austenitic stainless steel bar without additional hot working.
6.4.3 Cylindrically-shaped low alloy, martensitic stainless, ferritic stainless, and ferritic-austenitic stainless steel parts, NPS-4 [DN 100] and under, may be machined from forged or rolled bar, without additional hot working.
6.5 Except as provided for in 6.4, the finished product shall be a forging as defined in the Terminology section of Specification A788/A788M.