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ASTM A105/A105M-23 PDF of ASTM A105 2023
Standard Specification for Carbon Steel Forgings for Piping Applications
This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions. Materials shall be subjected to heat treatment (annealing, normalizing, tempering, or quenching). Material shall conform to carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, molybdenum and vanadium contents. The forgings shall be subjected to tension, hardness and hydrostatic tests, with the latter applicable when required. Material shall adhere to tensile strength, yield strength, elongation, reduction of area, and hardness requirements. Guidelines for retreatment, repair by welding, and product marking are given.
Scope
1.1 This specification2 covers forged carbon steel piping components for ambient- and higher-temperature service in pressure systems. Included are flanges, fittings, valves, and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards such as the MSS, ASME, and API specifications referenced in Section 2. Forgings made to this specification are limited to a maximum weight of 10 000 lb [4540 kg]. Larger forgings may be ordered to Specification A266/A266M. Tubesheets and hollow cylindrical forgings for pressure vessel shells are not included within the scope of this specification. Although this specification covers some piping components machined from rolled bar and seamless tubular products (see 5.2), it does not cover raw material produced in these product forms.
1.2 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.
1.3 Specification A266/A266M covers other steel forgings and Specifications A675/A675M and A696 cover other steel bars.
1.4 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. The values stated in either SI units or inch-pound units are to be regarded separately as 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.
NOTE 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”
What are changes in astm a105 2023 latest edition changes based on ASTM A105 2021
The latest edition of ASTM A105 is the 2023 edition, which was published on May 1, 2023. The 2023 edition includes a number of changes from the previous edition, including:
- New requirements for the chemical composition of A105 steel.
- New requirements for the mechanical properties of A105 steel.
- New requirements for the heat treatment of A105 steel.
- New requirements for the nondestructive testing of A105 steel.
Key changes in the 2023 edition of ASTM A105:
The carbon content of A105 steel is now limited to 0.40% maximum, down from 0.42% in the previous edition. This change was made to improve the machinability of A105 steel.
The tensile strength requirement for A105 steel in the quenched and tempered condition is now 1000 MPa minimum, up from 980 MPa in the previous edition. This change was made to improve the strength of A105 steel.
The hardness requirement for A105 steel in the quenched and tempered condition is now 29-34 HRC, up from 28-32 HRC in the previous edition. This change was made to improve the toughness of A105 steel.
The heat treatment requirements for A105 steel have been clarified. The steel must now be quenched in oil or water from a temperature of 1000°F to 1050°F (538°C to 566°C). The steel must then be tempered at a temperature of 400°F to 900°F (204°C to 482°C).
The nondestructive testing requirements for A105 steel have been updated. The steel must now be ultrasonically tested to ensure that it is free of any defects that could affect its strength or toughness.
Below link download PDF of ASTM A105 2023
https://alloypipefitting.com/pdf/ASTM-A105-A105M-23.pdf