What is Hastelloy flanges pressure class?
Hastelloy flanges are available in various pressure classes which indicate their ability to withstand different levels of pressure. These pressure classes are designated by numerical values such as 150, 300, 600 & so on. Each pressure class has its own corresponding pressure rating indicating the maximum pressure that the flange can handle without failure.
The pressure class of Hastelloy Flanges depends on factors such as the material grade, size and design specifications. It is important to select the appropriate pressure class to ensure the safe & efficient operation of the system.
| Material | Connection Types | ASME / ANSI |
|---|---|---|
| HAstelloy | Raised Face / Flat Face |
|
| Surface | Pressure Rating | Techniques |
|
Class 150 to Class 2500 | Casting / Cold press |
| Testing | Sizes | Types |
|
|
|
| Product | Price |
| LWN FLANGE 1.5 INCH SCH 80 CLASS 150 HASTELLOY C-276 | US $ 652.92 Per kg |
| WNRF FLANGE 6 INCH SCH 40 CLASS 150, HASTELLOY C276 | US $ 143.29 Per kg |
Hastelloy Forged Flange
Hastelloy Alloy Slip on Flange
ASTM B564 Hastelloy Blind Flange
ASME SB564 Hastelloy Weld Neck Flanges
ASTM B564 Hastelloy Plate Flange
Hastelloy Lap Joint Flange
Hastelloy Alloy Threaded Flange
ASME SB564 Hastelloy Ring and Spacer
Hastelloy Spectacle Blind Flange
Hastelloy Alloy Long weld neck flange
ASME SB564 Hastelloy Reducing Flange
ASTM B564 Hastelloy Socket Weld Flange
ASME SB564 Hastelloy Ring Joint Flanges
Hastelloy Raised Face Flange
ASTM B564 Hastelloy Flat Face Flanges
Class 150 Hastelloy Alloy flanges
Class 300 Hastelloy flange
Class 600 Hastelloy Alloy pipe flanges
Class 900 ASTM B564 Hastelloy flanges
Class 1500 ASME SB564 Hastelloy plate flange
Class 2500 Hastelloy flanges
| NPS | O.D. | Min. thickness |
Overall Length | Bolt Circle |
No. and Size of Holes |
O.D. of raised face |
|||
|---|---|---|---|---|---|---|---|---|---|
| Welding neck |
Slip-on & socket weld |
Lap Joint | |||||||
| O | Q | Y | Diam. | No. | dia. | R | |||
| 1/2 | 89 | 11.2 | 47.6 | 15.9 | 15.9 | 60.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 82.5 | 4 | 15 | 43 |
| 1 | 108 | 14.3 | 55.6 | 17.5 | 17.5 | 79.5 | 4 | 15 | 51 |
| 1.1/4 | 117 | 15.9 | 57.2 | 20.6 | 20.6 | 89.0 | 4 | 15 | 64 |
| 1.1/2 | 127 | 17.5 | 61.9 | 22.2 | 22.2 | 98.5 | 4 | 15 | 73 |
| 2 | 152 | 19.1 | 63.5 | 25.4 | 25.4 | 120.5 | 4 | 19 | 92 |
| 2.1/2 | 178 | 22.3 | 69.8 | 28.6 | 28.6 | 139.5 | 4 | 19 | 105 |
| 3 | 190 | 23.9 | 69.8 | 30.2 | 30.2 | 152.5 | 4 | 19 | 127 |
| 3.1/2 | 216 | 23.9 | 71.4 | 31.8 | 31.8 | 178.0 | 8 | 19 | 140 |
| 4 | 229 | 23.9 | 86.2 | 33.3 | 33.3 | 190.5 | 8 | 19 | 157 |
| 5 | 254 | 23.9 | 88.9 | 36.5 | 36.5 | 216.0 | 8 | 22 | 186 |
| 6 | 279 | 25.4 | 88.9 | 39.7 | 39.7 | 241.5 | 8 | 22 | 216 |
| 8 | 343 | 28.6 | 101.6 | 44.4 | 44.4 | 298.5 | 8 | 22 | 270 |
| 10 | 406 | 30.2 | 101.6 | 49.2 | 49.2 | 362.0 | 12 | 25 | 324 |
| 12 | 483 | 31.8 | 114.3 | 55.6 | 55.6 | 432.0 | 12 | 25 | 381 |
| 14 | 533 | 35.0 | 127.0 | 57.2 | 79.4 | 476.0 | 12 | 29 | 413 |
| 16 | 597 | 36.6 | 127.0 | 63.5 | 87.3 | 539.5 | 16 | 29 | 470 |
| 18 | 635 | 39.7 | 139.7 | 68.3 | 96.8 | 578.0 | 16 | 32 | 533 |
| 20 | 698 | 42.9 | 144.5 | 73.0 | 103.2 | 635.0 | 20 | 32 | 584 |
| 24 | 813 | 47.7 | 152.4 | 82.6 | 111.1 | 749.5 | 20 | 35 | 692 |
| NPS | SORF | Threaded | SWRF | LJRF | BLRF | WNRF |
| ½ | 1 | 1 | 2 | 1 | 2 | 2 |
| ¾ | 2 | 2 | 2 | 2 | 2 | 2 |
| 1 | 2 | 2 | 2 | 2 | 2 | 3 |
| 1¼ | 3 | 3 | 3 | 3 | 3 | 3 |
| 1½ | 3 | 3 | 3 | 3 | 4 | 4 |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 |
| 2½ | 8 | 8 | 8 | 8 | 7 | 10 |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 |
| 3½ | 11 | 12 | 11 | 11 | 13 | 12 |
| 4 | 13 | 13 | 13 | 13 | 17 | 16.5 |
| 5 | 15 | 15 | 15 | 15 | 20 | 21 |
| 6 | 19 | 19 | 19 | 19 | 27 | 26 |
| 8 | 30 | 30 | 30 | 30 | 47 | 42 |
| 10 | 43 | 43 | 43 | 43 | 70 | 54 |
| 12 | 64 | 64 | 64 | 64 | 123 | 88 |
| 14 | 90 | 90 | 90 | 105 | 140 | 114 |
| 16 | 106 | 98 | 98 | 140 | 180 | 140 |
| 18 | 130 | 130 | 130 | 160 | 220 | 165 |
| 20 | 165 | 165 | 165 | 195 | 285 | 197 |
| 22 | 185 | 185 | 185 | 245 | 355 | 225 |
| 24 | 220 | 220 | 220 | 275 | 430 | 268 |
| Grade | Ni | C | Mn | Si | S | Co | Cr | Fe | Mo | P |
| Hastelloy C22 | 50.015 min* | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 20.00 – 22.50 | 2.00 – 6.00 | 12.50 – 14.50 | 0.02 max |
| Hastelloy B2 | Bal | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | 1.0 max | 2.0 max | 26 – 30 | 0.04 max |
| Element | Tensile Strength | Yield Strength (0.2%Offset) | Density | Melting Point | Elongation |
| Hastelloy C22 | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 8.69 g/cm3 | 1399 °C (2550 °F) | 45 % |
| Hastelloy B2 | Psi – 1,10,000 , MPa – 760 | Psi – 51000 , MPa – 350 | 9.2 g/cm3 | 1370 °C (2500 ºF ) | 40 % |
| STANDARD | EN | UNS | WERKSTOFF NR. | JIS | GOST | OR |
| Hastelloy C22 | NiCr21Mo14W | N06022 | 2.4602 | NW 6022 | – | – |
| Hastelloy B2 | – | N10665 | 2.4617 | – | – | – |
| Temp. °C | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
|---|---|---|---|---|---|---|---|
| −29~38 | 20.0 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 154.6 | 257.6 | 429.4 |
| 150 | 15.8 | 50.3 | 66.8 | 100.3 | 150.6 | 250.8 | 418.2 |
| 200 | 13.8 | 48.3 | 64.5 | 96.7 | 145.0 | 241.7 | 402.8 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139.0 | 231.8 | 386.2 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 128.6 | 214.4 | 357.1 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124.0 | 206.6 | 344.3 |
| 350 | 8.4 | 40.3 | 53.6 | 80.4 | 120.7 | 201.1 | 335.3 |
| 375 | 7.4 | 38.9 | 51.6 | 77.6 | 116.5 | 194.1 | 323.2 |
| 400 | 6.5 | 36.5 | 48.9 | 73.3 | 109.8 | 183.1 | 304.9 |
| 425 | 5.5 | 35.2 | 46.5 | 70.0 | 105.1 | 175.1 | 291.6 |
At what temperature does the Hastelloy alloy forged flange get weak?
The strength and performance of Hastelloy alloy forged flanges can vary with temperature. Hastelloy alloys are known for their excellent high-temperature strength and resistance to corrosion and oxidation. However, like any material, the strength of Hastelloy can be affected by temperature.
As the temperature increases, the strength of Hastelloy forged flange may decrease. It is essential to consider the operating temperature range and select the appropriate grade of Hastelloy alloy that can withstand the desired temperature conditions without compromising its mechanical properties.
Is Hastelloy blind flange suitable for marine use?
Hastelloy blind flanges are commonly used in marine applications due to their excellent corrosion resistance properties. Hastelloy alloys including Hastelloy C22 are specifically designed to withstand harsh environments including exposure to seawater & saltwater atmospheres.
The corrosion resistance of Hastelloy blind flanges makes them suitable for offshore platforms, marine vessels, and other marine equipment where protection against corrosion is critical. The superior resistance to pitting, crevice corrosion, and stress corrosion cracking exhibited by Hastelloy alloys ensures the longevity and reliability of blind flanges in marine environments.
What are the 5 key features of Hastelloy alloy slip on flange?
Hastelloy alloy slip-on flanges offer several key features that make them advantageous in various applications. Firstly, their slip-on design allows for easy installation and removal, making them suitable for situations that require frequent maintenance or disassembly. Secondly, Hastelloy slip-on flanges provide a strong and secure connection, ensuring leak-free performance.
They are also resistant to corrosion, high temperatures and aggressive chemicals, making them ideal for corrosive or high temperature environments. Additionally Hastelloy slip-on flanges are available in a wide range of sizes and pressure classes to accommodate different piping systems.
Hastelloy socket weld flange vs Hastelloy alloy weld neck flange
Hastelloy socket weld flanges and weld neck flange are two common types of flanges used in different applications. Socket weld flange are designed for smaller pipe sizes and offer easy alignment and welding. They provide a smooth bore and high flow capacity. On the other hand weld neck flanges are used for higher-pressure applications and provide a strong and reliable connection.
They have a long tapered hub that provides reinforcement and helps to reduce stress concentration. The choice between socket weld flanges & weld neck flanges depends on factors such as pipe size, pressure requirements & installation convenience.
How to order Hastelloy plate flange?
When ordering Hastelloy plate flanges, it is important to provide specific details to ensure accurate and efficient procurement. Start by specifying the material grade, such as Alloy C22, to ensure the desired corrosion resistance properties. Specify the flange type, such as plate flange, and provide the required dimensions, including the size and pressure class.
If any special features or requirements are needed such as a raised face or special facing it should be mentioned. By providing clear & detailed information you can ensure that the Hastelloy plate flanges meet your specific application needs & are compatible with the existing piping system.