Alloy 20 forged fittings, covered by the ASTM B462 are designed with the intended of being used in environments that are not only highly corrosive, but the temperature settings of these applications are high as well. This specification covers requirements for Alloy 20 Forged Fittings, which is a staple grade for applications involving use in sulfuric acid. These fittings regularly find use in industries such as petrochemical, chemical, power generation, and plastics industries as the carpenter 20 coupling resists not only pitting but also chloride ion stress related corrosion. The forging process is carried out on these fittings by using the following processes i.e. hammering, extruding, pressing, rolling, or upsetting). In addition to the aforementioned processes, both hot working, and heat treatment has been detailed in the ASTM B462 specification.
Alloy 20 Forged Fittings
Carpenter 20 Threaded Union
Alloy UNS N08020 Socket Weld fittings
The material used to produce the austenitic alloy grade ASTM B462 Alloy 20 threaded elbow is required to conform to the chemistry with the elements detailed in the specification. In addition to the chemistry requirements, the said fitting needs to meet the mechanical properties requirements specified by the ASTM B462 including parameters such as tensile strength, yield strength, as well as elongation. The forgings, in this case, Alloy UNS N08020 Socket Weld fittings need to conform to the ASTM B462 specified sizes and shapes. Moreover, the manufacturer is required to conduct both a chemical as well as a product analyses on the Alloy 20 DIN 2.4819 Coupling using tests such as the hydrostatic test, macroetch test and tension test.
Table of Content
Dimension Specification | ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
---|---|
Thread | NPT, BSPT, BSPP |
Type | DN15-DN1200 |
End | Threaded, Welding, JIC |
Pressure Rating | Threaded end-2000lb/ 3000lb/ 6000lbs Pipe Fittings Socket-weld end-3000/ 6000/ 9000lbs Pipe Fittings |
Connection | Welding |
Manufacturing process | Push, Press, Forge, Cast, etc. |
Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
Specialized manufacturer of | 90º Elbows, 45º Elbows, Tees, Crosses, Couplings, Reducers, Inserts, Caps, Nipples, and Unions, Forged Pipe Fittings, Socket Weld & Threaded, Equal Tees & Reducing Tees, 90° & 45° Elbows – Female-Female, Male-Female, Male-Male, Union, Nipples, Couplings, Plugs Fittings |
Application |
|
Alloy 20 Threaded Fittings | ASTM B462 UNS N08020 90 Deg Screwed-Threaded Elbow |
WNR 2.4660 Alloy 20 45 Deg Screwed-Threaded Elbow | ASTM B462 WP20CB Equal Tee |
WNR 2.4660 Unequal Tee | ASTM B462 Alloy 20 Equal Cross |
UNS N08020 Unequal Cross | Carpenter 20 Full Coupling |
WNR 2.4660 Half Coupling | Alloy 20 Reducing Coupling |
ASTM B462 WP20CB Cap | ASTM B462 Alloy 20 Bushing |
WNR 2.4660 Alloy 20 Plug | UNS N08020 Hex Nipple |
Carpenter 20 Elbow | ASTM B462 UNS N08020 Bull Plug |
ASTM B462 WP20CB Welding Boss | ASTM B462 Alloy 20 Swage Nipple |
WNR 2.4660 Pipe Nipple | Carpenter 20 Adapter |
WNR 2.4660 Alloy 20 Union Male Female | ASTM B462 UNS N08020 Union BS 3799 |
Alloy 20 Branch Outlet | UNS N08020 Elbow Outlet |
Pipe Size | Schedule | Wall Thick. | Alloy 20 Elbow 90″ (Each) |
---|---|---|---|
1″ | 80 | 0.179″ | $158.36 |
1 1/2″ | 80 | 0.200″ | $258.36 |
2″ | 80 | 0.218″ | $348.34 |
3″ | 80 | 0.300″ | $398.48 |
Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.0-4.0 | 32.0-38.0 | 19.0-21.0 | 29.85 min* | 2.0-3.0 | 0.045 max |
Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35000 , MPa – 241 | Psi – 80000 , MPa – 551 | 30 % |
STANDARD | WERKSTOFF NR. | UNS | AFNOR | EN |
Alloy 20 | 2.4660 | N08020 | Z2NCUD31-20AZ | NiCr20CuMo |
NPS | Socket Bore |
Depth Socket |
Bore diameter |
Socket wall thickness |
Body wall thickness |
Center to bottom of socket A |
|
B | J | D | C | G | 45° | ||
1/2 | 21.95 21.70 |
10 | 16.6 15 |
4.65 4.10 |
3.75 | 11.5 | |
3/4 | 27.30 27.05 |
13 | 21.7 20.2 |
4.90 4.25 |
3.90 | 12.5 | |
1 | 34.05 33.80 |
13 | 27.4 25.9 |
5.70 5.00 |
4.55 | 14 | |
1¼ | 42.80 42.55 |
13 | 35.8 34.3 |
6.05 5.30 |
4.85 | 17 | |
1½ | 48.90 48.65 |
13 | 41.7 40.1 |
6.35 5.55 |
5.10 | 21 | |
2 | 61.35 61.10 |
16 | 53.5 51.7 |
6.95 6.05 |
5.55 | 25 | |
2½ | 74.20 73.80 |
16 | 64.2 61.2 |
8.75 7.65 |
7.00 | 29 | |
3 | 90.15 89.80 |
16 | 79.5 46.4 |
9.50 8.30 |
7.60 | 31.5 | |
4 | 115.80 115.45 |
19 | 103.8 100.7 |
10.70 9.35 |
8.55 | 41.5 |