ASME A182:2019 pdf download

ASME A182:2019 pdf download.SPECIFICATION FOR CARBON STEEL FORGINGS, FOR GENERAL-PURPOSE PIPING
1. Scope
1.1 This specification covers nonstandard as-forged fit- tings, valve components, and parts for general service. Forgings made to this specification are limited to a maxi- mum weight of 10 000 lb [4540 kg]. Larger forgings may be ordered to Specification A 266/A 266M.
1.2 Two classes of material are covered, designated as Classes 60 and 70, respectively, and are classified in accordance with their mechanical properties as specified in 6.1.
1.3 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each systemmustbeusedindependentlyoftheother. Combining values from the two systems may resultin nonconformance with the specification.
2. Referenced Documents
2.1 ASTM Standards: A 266/A 266M Specification for Carbon Steel Forgings for Pressure Vessel Components A 788/A 788M Specification for Steel Forgings, General Requirements A 961 /A 961M Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
3. General
Requirements and Ordering Information 3.1 Product furnishedtothis specification shallconform to the requirements of Specification A 961 /A 961M,including any supplementary requirements that are indi- cated in the purchase order. Failure to comply with the requirements of Specification A 961 /A 961M constitutes non-conformance with this specification. 3.2 It is the purchaser’s responsibility to specify in the purchase order all ordering information necessary to purchase the needed material. Examples of such informa- tion include but are not limited to the ordering information in Specification A 961 /A 961M and the following: 3.2.1 Supplementary requirements, and 3.2.2 Additional requirements (See 4.3, 9.1, 10.2, 12.1, and 12.2). 3.3 If the requirements of this specification are in con- flictwiththerequirements ofSpecification A 961/A 961M, the requirements of this specification shall prevail.
4. Materials and Manufacture
4.1 Except forflanges ofall types, hollow, cylindrically shaped parts may be machined from hot-rolled or forged bar, provided that the axial length of the part is approxi- mately parallel to the metal flow lines of the stock. Other parts, excluding flanges of all types, up to and including NPS 4 may be machined from hot-rolled or forged bar. Elbows, return bends, tees, and header tees shall not be machined directly from bar stock. 4.2 Except as permitted in 4.1, the finished product shall be a forging as defined in the Terminology section (exclusively) of Specification A 788/A 788M. 4.3 When specified in the order, the manufacturer shall submit for approval of the purchaser a sketch showing the shape of the rough forging before machining. 4.4 Forgings shall be protected against sudden or too rapid cooling from the rolling or forging while passing through the critical range.
11. Marking of Forgings
11.1 Identification marks consisting ofthe manufactur- er’s symbol or name, designation of service rating, Speci- fication number, class, and size shall be legibly forged or stamped on each forging, and in such a position as not to injure the usefulness of the forgings. 11.2 Bar Coding — In addition to the requirements in 11.1, bar coding is acceptable as a supplementary identifi- cation method. The purchaser may specify in the order a specific bar coding system to be used. The bar coding system, if applied at the discretion of the supplier, should be consistent with one of the published industry standards for bar coding. If used on small parts the bar code may be applied to the box or a substantially applied tag.