ASTM A105
Standard Specification for Carbon Steel Forgings for Piping Applications
This specification 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
ASTM A105 Chemical Requirements
| C | Mn | Si | Cu | Cr | Ni | Mo | P | S | V | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min. | 0.60 | 0.15 | ||||||||
| Max. | 0.35 | 1.05 | 0.35 | 0.40 | 0.30 | 0.40 | 0.12 | 0.035 | 0.040 | 0.08 |
Heat Treatment
Heat treatment is not a mandatory requirement of this specification except for the following piping components:
1 Flanges above Class 300,
2 Flanges of special design where the design pressure at the design temperature exceeds the pressure-temperature ratings of Class 300, Group 1.1
3 Flanges of special design where the design pressure or design temperature are not known
Piping components other than flanges which meet both of the following criteria:
(1) over NPS 4 and (2) above Class 300,
5 Piping components of Special Class other than flanges which meet both of the following criteria:
(1) over NPS 4 and (2) when the working pressure at the operating temperature exceeds the tabulated values for Special Class 300,
ASTM A105 shall be annealing, normalizing, or normalizing and tempering or quenching and tempering in accordance with Specification A961/A961M. After hot working and before reheating for heat treatment, the forging shall be allowed to cool substantially below the transformation range. 6.2.1 Quenching shall consist of either (1) fully austenitizing the forgings followed by quenching in a suitable liquid medium or (2) using a multiple stage procedure whereby the forgings are first fully austenitized and rapidly cooled, then reheated to partially reaustenitize, followed by quenching in a suitable liquid medium. All quenched forgings shall be tempered as prescribed in Specification A961/A961M.
ASTM A105 Hardness Tests
Two hardness tests shall be made for each heat of as-forged components. When more than one forging is produced from each heat, a minimum of two forgings shall be tested with one reading from each forging. When only one forging is produced, it shall be tested in two locations
ASTM A105 Can be used to produce Forged flange.
Flange type:Weld neck flange, Slip on Flange,Blind Flange,socket weld flanges.
Standards : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Size : 1/8″ NB TO 60″NB.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
ASME/ASTM A105 Standard PDF download
Standard Specification for Carbon Steel Forgings for Piping Applications
