Can Hastelloy C276 Flanges coatings be used in high-temperature applications?
These flanges, produced from a nickel-chromium-molybdenum alloy, incorporate tungsten as a significant addition. Hastelloy C276 flanges operate in power generation, petrochemicals, pharmaceuticals, and pulp and paper production. A DIN 2.4819 threaded flange gets employed in many high-temperature setups: gas valves, heat exchangers, and transfer piping. It tolerates up to 1800°F and intermittent use up to 1900°F.
Appropriate coatings for high-temperature applications include fusion-bonded epoxy, polypropylene, stainless steel, and also ceramic.
What are some best practices for storing Alloy C276 blind flange to prevent corrosion and rust from occurring?
These flanges show excellent corrosion resistance due to the addition of tungsten. An alloy C276 blind flange withstands pitting, stress-corrosion cracking, and oxidation. Its low carbon content limits the risk of carbide precipitation.
Clients should store a Hastelloy alloy C276 reducing flange in a cool and dry area, away from incompatible materials like acids and oxidisers. Safe storage prevents metal oxide fumes and limits corrosion. These components are a boon for flue gas desulphurisation units, chimney stack linings, and environments exposed to chloride ions, seawater, etc.
What are some common problems that can occur with Werkstoff 2.4819 slip on flange coatings? How can they be prevented?
Manufacturers offer different coatings for a Werkstoff 2.4819 slip on flange. For instance, clients may choose black coating, cold or hot-dip galvanising, PTFE, phosphate coat, or ceramic-filled fluorocarbon coating. Unfortunately, these coats may occasionally encounter problems like damage, weakening, and age-related deterioration. You may witness sags, mud-cracking, or surface defects.
Most coating problems arise from incorrect application and curing. The best prevention is to use the correct technique while creating and applying the mix. Regular cleaning and maintenance are also crucial for long service life.
Material | Sizes | Types |
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Hastelloy C276 |
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Test Certificates | Face Types | ASME/ANSI |
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Pressure Rating | UNS | DIN |
Class 150 to Class 2500 | N10276 | WNR 2.4819 |
Product | Price |
HASTELLOY.C276 FLANGES 2 600 # RTJ | US $257.45 Per Piece |
150# RF SO B/SB564 C276 HASTELLOY FLANGES | US $360.84 Per Piece |
300# RF WN S/80 B/SB564 C276 HASTELLOY FLANGES | US $991.19 Per Piece |
Hastelloy C276 Forged Flange
UNS N10276 Slip on Flange
DIN 2.4819 Blind Flange
Nickel C276 Weld Neck Flanges
Alloy C276 Plate Flange
ASTM B564 Hastelloy C276 Lap Joint Flange
Nickel Alloy C276 Threaded Flange
ASTM B564 UNS N10276 Ring and Spacer
Ni C276 Spectacle Blind Flange
Hastelloy alloy C276 Long weld neck flange
UNS N10276 Reducing Flange
Ni C276 Expander Flange
ASTM B564 Hastelloy C276 Socket Weld Flange
Alloy C276 RTJ Flanges
Hastelloy C276 Ring Joint Flanges
Nickel Alloy C276 BLRF Flanges
Nickel C276 SORF Flanges
Hastelloy alloy C276 Raised Face Flange
DIN 2.4819 Tongue and groove flange
ASTM B564 UNS N10276 WNRF Flanges
Nickel Alloy C276 SWRF Flanges
Hastelloy C276 Flat Face Flanges
Nickel C276 Pipe Flanges
Alloy C276 Exhaust flanges
Class 150 Hastelloy alloy C276 flanges
Class 300 ASTM B564 UNS N10276 flange
Class 600 ASTM B564 Hastelloy C276 pipe flanges
Class 900 DIN 2.4819 flanges
Class 1500 UNS N10276 plate flange
Class 2500 Ni C276 flanges
Temperature °F | 150# | 300# | 400# | 600# | 900# | 1500# | 2500# |
---|---|---|---|---|---|---|---|
-20~100 | 290 | 750 | 1000 | 1500 | 2250 | 3750 | 6250 |
200 | 260 | 750 | 1000 | 1500 | 2250 | 3750 | 6250 |
300 | 230 | 730 | 970 | 1455 | 2185 | 3640 | 6070 |
400 | 200 | 700 | 930 | 1395 | 2095 | 3490 | 5820 |
500 | 170 | 665 | 885 | 1330 | 1995 | 3325 | 5540 |
600 | 145 | 605 | 805 | 1210 | 1815 | 3025 | 5040 |
650 | 125 | 590 | 785 | 1175 | 1765 | 2940 | 4905 |
700 | 110 | 570 | 755 | 1135 | 1705 | 2840 | 4730 |
750 | 95 | 530 | 710 | 1065 | 1595 | 2660 | 4430 |
800 | 80 | 510 | 675 | 1015 | 1525 | 2540 | 4230 |
Grade | Ni | C | Mn | Si | S | Co | Cr | Fe | Mo | P |
Hastelloy C276 | 50.99 min* | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 14.50 – 16.50 | 4.00 – 7.00 | 15.00 – 17.00 | 0.04 max |
Element | Tensile Strength | Yield Strength (0.2%Offset) | Density | Melting Point | Elongation |
Hastelloy C276 | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 8.89 g/cm3 | 1370 °C (2500 °F) | 40 % |
STANDARD | EN | UNS | WERKSTOFF NR. | JIS | GOST | OR |
Hastelloy C276 | NiMo16Cr15W | N10276 | 2.4819 | NW 0276 | ХН65МВУ | ЭП760 |
Properties | Metric | Imperial |
---|---|---|
Density | 8.89 g/cm³ | 0.321 lb/in³ |
Melting point | 1371°C | 2500°F |
Properties | Metric | Imperial |
---|---|---|
Thermal expansion co-efficient (@24-93°C/75.2-199°F) | 11.2 µm/m°C | 6.22 µin/in°F |
Thermal conductivity (-168 °C) | 7.20 W/mK | 50.0 BTU in/hr.ft².°F |
NPS | Lap Joint | Threaded | Slip On | Blind | Socket Weld | Weld Neck |
---|---|---|---|---|---|---|
½ | 1 | 1 | 1 | 2 | 2 | 2 |
1 | 2 | 2 | 2 | 2 | 2 | 3 |
1¼ | 3 | 3 | 3 | 3 | 3 | 3 |
¾ | 2 | 2 | 2 | 2 | 2 | 2 |
1½ | 3 | 3 | 3 | 4 | 3 | 4 |
2½ | 8 | 8 | 8 | 7 | 8 | 10 |
2 | 5 | 5 | 5 | 5 | 5 | 6 |
3 | 9 | 9 | 9 | 9 | 9 | 11.5 |
4 | 13 | 13 | 13 | 17 | 13 | 16.5 |
3½ | 11 | 12 | 11 | 13 | 11 | 12 |
5 | 15 | 15 | 15 | 20 | 15 | 21 |
8 | 30 | 30 | 30 | 47 | 30 | 42 |
6 | 19 | 19 | 19 | 27 | 19 | 26 |
10 | 43 | 43 | 43 | 70 | 43 | 54 |
24 | 275 | 220 | 220 | 430 | 220 | 268 |
14 | 105 | 90 | 90 | 140 | 90 | 114 |
12 | 64 | 64 | 64 | 123 | 64 | 88 |
16 | 140 | 98 | 106 | 180 | 98 | 140 |
20 | 195 | 165 | 165 | 285 | 165 | 197 |
18 | 160 | 130 | 130 | 220 | 130 | 165 |
22 | 245 | 185 | 185 | 355 | 185 | 225 |
Size in mm | Size in Inch | Bolt Stress lb/in2 |
Thread Type | No. of Bolt | Bolt Dia. | Torque lbf.ft. |
Torque Nm |
15 | 1/2 | 40,000 | UNC | 4 | ½” | 35 | 48 |
20 | 3/4 | 40,000 | UNC | 4 | ½” | 69 | 94 |
35 | 1 | 40,000 | UNC | 4 | ½” | 69 | 94 |
40 | 1 ½ | 45,000 | UNC | 4 | ½” | 137 | 185 |
50 | 2 | 50,000 | UNC | 4 | 5/8” | 86 | 117 |
80 | 3 | 45,000 | UNC | 4 | 5/8” | 137 | 185 |
100 | 4 | 45,000 | UNC | 8 | 5/8” | 218 | 296 |
150 | 6 | 45,000 | UNC | 8 | ¾” | 325 | 441 |
200 | 8 | 50,000 | UNC | 8 | ¾” | 526 | 714 |
250 | 10 | 45,000 | UNC | 12 | 7/8” | 662 | 897 |
300 | 12 | 45,000 | UNC | 12 | 7/8” | 662 | 897 |
350 | 14 | 45,000 | UN8 | 12 | 1” | 894 | 1213 |
400 | 16 | 45,000 | UN8 | 16 | 1” | 1175 | 1593 |
450 | 18 | 45,000 | UN8 | 16 | 1 1/8” | 1507 | 2044 |
500 | 20 | 45,000 | UN8 | 20 | 1 1/8” | 1507 | 2044 |
600 | 24 | 45,000 | UN8 | 20 | 1 ¼” | 2354 | 3191 |
What are the advantages and disadvantages of using a UNS N10276 socket weld flange in a raised and flat face?
Customers can procure these flanges in raised or flat face types. A raised face UNS N10276 socket weld flange has an elevated region around the pipe bore, unlike its flat face counterpart. The main advantage of the former is its adaptability to high and low temperatures or pressures. Raised face flanges also provide a tighter seal.
A nickel C276 plate flange with a flat face is best for lower pressures. Its main benefit is limiting the bending moment when the bolts experience torque, preventing breakage or damage. These components are also easier to set up.
How do you prevent Alloy C276 Flanges connection failures?
The typical causes for failure in Alloy C276 flanges include corrosion, undue pressure or load, and defects like dents, gouges, and pits. Other risk factors are improper installation or operation and natural hazards.
These potential problems can get prevented by routine maintenance that examines defects and uses onsite machining to eliminate distortions. A Hastelloy C276 lap joint flange can also benefit from a gasket to create a tighter seal.
Which are the key considerations when selecting nickel alloy C276 weld neck flange for offshore drilling applications?
These flanges are customary in offshore drilling platforms, refineries, pipelines, etc. A nickel alloy C276 weld neck flange can endure exposure to hydrogen sulfide – a compound in crude oil and natural gas. It can accumulate in cramped spaces and cause considerable damage to many other materials.
When selecting the appropriate component for an offshore environment, ambient temperatures, pressures, and media are vital considerations. This material is expensive compared to stainless steel but reaps the advantages of corrosion resistance and durability. Clients must also consider the required dimensions, manufacturing process, quality standards, and thorough testing.