A105/A105M- 18 Standard Specification for Carbon Steel Forgings for Piping Applications

Designation: A105/A105M- 18 Standard Specification for Carbon Steel Forgings for Piping Applications1 1. Scope* 1.1 This specification2covers forged carbon steel pipingcomponents for ambient- and higher-temperature service inpressure systems. Included are flanges，fittings, valves，andsimilar parts ordered either to dimensions specified by thepurchaser or to dimensional standards such as the Mss.ASME,and APl specifications referenced in Section 2. Forg-ings made to this specification are limited to a maximumweight of 10 0O0 lb [4540 kg]. Largcr forgings may be orderedto Specification A266/A266M.Tubesheets and hollow cylin-drical forgings for pressure vessel shells are not includedwithin the scope of this specification. Although this specifica-tion covers some piping components machined from rolled barand scamless tubular products (see 5.2). it docs not cover rawmaterial produced in these product forms. 1.2 Supplementary requirements are provided for use whenadditional testing or inspection is desired.These shall applyonly when specified individually by the purchaser in the order. 1.3 Specification A266/A266M covers other steel forgingsand Specifications A675/A675M and A696 cover other steelbars. 1.4 This specification is expressed in both inch-pound unitsand Sl units.However, unless the order specifies the applicable“M"" specification designation (Sl units), the materiai shall befurnished to inch-pound units. The values stated in either SIunits or inch-pound units are to be regarded separately asstandard. Within the text, the Sl units are shown in brackets.The values stated in each system may not be exact equivalents;therefore, cach system shall be used independently of the other.