ASTM A182 weld neck Flange is made up of different stainless steel materials. In particular, there are different grades to the stainless steel depending on the material composition and the mechanical properties vary.
The ASTM A182 Weld Neck Flange are made up of a super austenitic material that has good corrosion resistant properties with low carbon in its composition. Furthermore, The applications include utility scrubber assemblies. The flanges are also used in acid production and fertilizer production plants due to its corrosion resistance.
Specification of ASTM A182 Weld Neck Flange
| Shape Type | Regular and Long Neck |
| Sealing Face | RF, FF, FTJ |
| Size Range | 1/2″ – 48″/ DN15 – DN1200 |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500lb |
| Standard | ASME B16.5, ASME B16.47 Series A/B |
| Alloy Steel | ASTM A182 F11 / 12 / 5 / 9 / 91 / 92 |
| Stainless Steel | ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L |
| Duplex Stainless Steel | ASTM A182 F51, F53, F44 |
Class 600 Weld Neck Flange Dimension
| Nominal Pipe Size |
A | B | C | D | E | F | G | H | I | J | Weight | |
| 1/2 | 21.30 | 95.30 | spec ified by Purchaser |
14.20 | 52.30 | 21.30 | 38.10 | 35.00 | 4 | 15.70 | 66.55 | 0.87 |
| 3/4 | 26.70 | 117.3 | 15.70 | 57.15 | 26.70 | 47.80 | 42.90 | 4 | 19.10 | 82.60 | 1.45 | |
| 1 | 33.40 | 124.0 | 17.50 | 62.00 | 33.50 | 53.80 | 50.80 | 4 | 19.10 | 88.90 | 1.76 | |
| 11/4 | 42.20 | 133.4 | 20.60 | 66.55 | 42.20 | 63.50 | 63.50 | 4 | 19.10 | 98.60 | 2.49 | |
| 11/2 | 48.30 | 155.4 | 22.40 | 69.85 | 48.30 | 69.85 | 73. 15 | 4 | 22.40 | 114.3 | 3.49 | |
| 2 | 60.30 | 165. 1 | 25.40 | 73.15 | 60.45 | 84.10 | 91.90 | 8 | 19.10 | 127.0 | 4.36 | |
| 21/2 | 73.00 | 190.5 | 28.40 | 79.25 | 73.15 | 100.1 | 104.6 | 8 | 22.40 | 149.4 | 6.43 | |
| 3 | 88.90 | 209.6 | 31.75 | 82.60 | 88.90 | 117.3 | 127.0 | 8 | 22.40 | 168.1 | 8.53 | |
| 31/2 | 101.6 | 228.6 | 35.10 | 85.90 | 101.6 | 133.4 | 139.7 | 8 | 25.40 | 184.2 | 10.7 | |
| 4 | 114.3 | 273. 1 | 38.10 | 101.6 | 114.3 | 152.4 | 157.2 | 8 | 25.40 | 215.9 | 17.4 | |
| 5 | 141.3 | 330.2 | 44.50 | 114.3 | 141.2 | 189.0 | 185.7 | 8 | 28.40 | 266.7 | 29.2 | |
| 6 | 168.3 | 355.6 | 47.80 | 117.3 | 168.4 | 222.3 | 215.9 | 12 | 28.40 | 292.1 | 34.9 | |
| 8 | 219.1 | 419. 1 | 55.60 | 133.4 | 219.2 | 273.1 | 269.7 | 12 | 31.75 | 349.3 | 53.9 | |
| 10 | 273.0 | 508.0 | 63.50 | 152.4 | 273.0 | 342.9 | 323.8 | 16 | 35.10 | 431.8 | 86.5 | |
| 12 | 323.8 | 558.8 | 66.55 | 155.4 | 323.8 | 400.1 | 381.0 | 20 | 35.10 | 489.0 | 103 | |
| 14 | 355.6 | 603.3 | 69.85 | 165.1 | 355.6 | 431.8 | 412.7 | 20 | 38.10 | 527.1 | 122 | |
| 16 | 406.4 | 685.8 | 76.20 | 177.8 | 406.4 | 495.3 | 469.9 | 20 | 41.10 | 603.3 | 170 | |
| 18 | 457.2 | 743.0 | 82.60 | 184.2 | 457.2 | 546.1 | 533.4 | 20 | 44.50 | 654.1 | 204 | |
| 20 | 508.0 | 812.8 | 88.90 | 190.5 | 508.0 | 609.6 | 584.2 | 24 | 44.50 | 723.9 | 254 | |
| 24 | 609.6 | 939.8 | 101.6 | 203.2 | 609.6 | 717.6 | 692.1 | 24 | 50.80 | 838.2 | 358 |
Materials of ASTM A182 Flange
The A182 standard was developed by the American Society for Testing and Materials (ASTM) .ASTM A182 weld neck flange covers a variety of alloy steel and stainless steel grades, including but not limited to F1, F5, F9 to F347, etc. These standards specify in detail the specific requirements of the chemical composition, mechanical properties.
Alloy Steel Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Cr | Mo |
| ASTM A182 F11 CL1 | MIN | 0.05 | 0.30 | 0.50 | 1.00 | 0.44 | ||
| MAX | 0.15 | 0.60 | 0.03 | 0.03 | 1.00 | 1.50 | 0.65 | |
| ASTM A182 F11 CL2 | MIN | 0.10 | 0.30 | 0.50 | 1.00 | 0.44 | ||
| MAX | 0.20 | 0.80 | 0.04 | 0.04 | 1.00 | 1.50 | 0.65 | |
| ASTM A182 F11 CL3 | MIN | 0.05 | 0.30 | 0.50 | 1.00 | 0.44 | ||
| MAX | 0.15 | 0.60 | 0.03 | 0.03 | 1.00 | 1.50 | 0.65 |
Stainless Steel Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N |
| ASTM A182 F304 | MIN | 8.0 | 18.0 | |||||||
| MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 11.0 | 20.0 | 0.10 | ||
| ASTM A182 F316 | MIN | 10.0 | 16.0 | 2.00 | ||||||
| MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 14.0 | 18.0 | 3.00 | 0.01 |
Duplex Stainless Steel Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N |
| ASTM A182 F51 | MIN | 4.50 | 21.00 | 2.50 | 0.08 | |||||
| MAX | 0.03 | 2.00 | 0.030 | 0.020 | 1.00 | 6.50 | 23.00 | 3.50 | 0.20 |
ASTM A182 Mechanical Property
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % |
| ASTM A182 F304 | 515 min | 205 min | 30 min | 50 min |
| ASTM A182 F12 CL1 | 415 min | 220 min | 20 min | 45 min |
| ASTM A182 F12 CL2 | 485 min | 275 min | 20 min | 30 min |
| ASTM A182 F51 | 620 min | 450 min | 25 min | 45 min |
For ASTM A182 weld neck flange, different grades have different yield strength values. Generally speaking, the yield strength of A182 is between 205 – 450MPa (depending on the different heat treatment states). This means that when the stress on the material reaches this value, the material will begin to undergo irreversible plastic deformation.
Advantages
A182 weld neck flange is a widely used pipe connector, produced based on ASTM A182 standard, and connected to the pipe by butt welding process.
High-quality alloy material
High strength and good toughness
Welding performance advantage
Butt welding process advantage
Welding adaptability
Good corrosion resistance
Customizable corrosion resistance
Size and precision advantage
Strict size standards
Precise processing accuracy
Wide temperature applicability
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