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Inconel 800 800H 800HT Flanges are precision-engineered components made from premium nickel-chromium alloy, specifically designed to withstand extreme temperatures and corrosive environments. These flanges offer outstanding mechanical strength and durability, making them ideal for critical industrial applications.
The primary composition of Inconel 800 800H 800HT includes nickel, chromium, and iron, which ensures excellent resistance against oxidation and corrosion. This makes the flanges highly suitable for chemical processing plants, power generation units, and marine applications where exposure to harsh environments is common.
Inconel 800 800H 800HT Flanges are available in a variety of types to suit diverse industrial requirements. Common types include Weld Neck Flanges, Slip-On Flanges, Blind Flanges, Threaded Flanges, and Socket Weld Flanges. Each type is engineered to meet specific pressure and temperature requirements.
Manufactured in compliance with global standards such as ASME, ASTM, DIN, and EN, Inconel 800 800H 800HT Flanges guarantee consistent quality, reliability, and safety. These standards ensure the flanges are suitable for high-pressure and high-temperature applications in demanding industrial environments.
One of the key advantages of Inconel 800 800H 800HT Flanges is their exceptional resistance to stress corrosion cracking. The alloy maintains structural integrity even under prolonged exposure to aggressive chemicals, steam, and high-temperature oxidizing environments.
Inconel 800 800H 800HT Flanges are widely used in industries such as oil and gas, petrochemical, aerospace, nuclear power, and marine engineering. Their ability to perform under extreme conditions makes them a preferred choice for pipelines, pressure vessels, heat exchangers, and reactors.
The mechanical properties of Inconel 800 800H 800HT Flanges include high tensile strength, good elongation, and excellent creep resistance. These properties ensure long-lasting performance, reduced maintenance, and minimal risk of failure, even in critical applications.
Flanges made from Inconel 800 800H 800HT are available in various sizes, pressure ratings, and face types. This flexibility allows engineers and designers to select the most suitable flange for their specific project requirements, ensuring optimal performance and safety.
Inconel 800 800H 800HT Flanges are not only functional but also cost-effective in the long term. Their durability and resistance to corrosion and high temperatures significantly reduce replacement frequency, downtime, and maintenance costs, offering excellent return on investment.
Specification Table
| Flange Type | Material Grade | Standards | Pressure Rating | Size Range | End Type |
|---|---|---|---|---|---|
| Weld Neck Flange | Inconel 800 / 800H / 800HT | ASTM B564, ASME B16.5 | 150# – 2500# | 1/2" – 72" | Butt Weld |
| Slip-On Flange | Inconel 800 / 800H / 800HT | ASTM B564, ASME B16.5 | 150# – 600# | 1/2" – 48" | Slip-On |
| Blind Flange | Inconel 800 / 800H / 800HT | ASTM B564, ASME B16.5 | 150# – 2500# | 1/2" – 72" | Blind |
| Socket Weld Flange | Inconel 800 / 800H / 800HT | ASTM B564, ASME B16.5 | 150# – 300# | 1/2" – 4" | Socket Weld |
| Threaded Flange | Inconel 800 / 800H / 800HT | ASTM B564, ASME B16.5 | 150# – 300# | 1/2" – 24" | Threaded |
Chemical Composition (Typical ranges for SSK400)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Inconel 800 | Inconel 800H | Inconel 800HT |
|---|---|---|---|
| Nickel (Ni) | 30 – 35 | 30 – 35 | 30 – 35 |
| Chromium (Cr) | 19 – 23 | 19 – 23 | 19 – 23 |
| Iron (Fe) | Balance | Balance | Balance |
| Carbon (C) | 0.15 max | 0.10 max | 0.10 max |
| Manganese (Mn) | 1.00 max | 1.00 max | 1.00 max |
| Silicon (Si) | 1.00 max | 1.00 max | 1.00 max |
| Copper (Cu) | 1.00 max | 1.00 max | 1.00 max |
| Aluminium (Al) | 0.15 – 0.60 | 0.15 – 0.60 | 0.15 – 0.60 |
| Titanium (Ti) | 0.15 – 0.60 | 0.15 – 0.60 | 0.15 – 0.60 |
| Carbon + Nitrogen (C+N) | 0.25 max | 0.25 max | 0.25 max |
Mechanical Properties (Typical)
| Property | Inconel 800 | Inconel 800H | Inconel 800HT |
|---|---|---|---|
| Tensile Strength (MPa) | 485 – 620 | 485 – 620 | 485 – 620 |
| Yield Strength (MPa) | 205 – 275 | 205 – 275 | 205 – 275 |
| Elongation (%) | 30 – 40 | 30 – 40 | 30 – 40 |
| Hardness (Brinell HB) | 150 – 217 | 150 – 217 | 150 – 217 |
| Density (g/cm³) | 8.0 | 8.0 | 8.0 |
| Melting Point (°C) | 1390 – 1420 | 1390 – 1420 | 1390 – 1420 |
| Service Temperature (°C) | ≤ 700 | ≤ 850 | ≤ 950 |
Equivalent Grades
| Standard / Organization | Inconel 800 | Inconel 800H | Inconel 800HT |
|---|---|---|---|
| UNS | N08800 | N08810 | N08811 |
| ASTM / ASME | B564, SB564 | B564, SB564 | B564, SB564 |
| EN / DIN | 2.4858 | 2.4858 | 2.4858 |
| JIS | SN NiCr20Fe | SN NiCr20Fe | SN NiCr20Fe |
| Other | Incoloy 800 | Incoloy 800H | Incoloy 800HT |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Size (inches) | Outside Diameter (OD) mm | Bolt Circle Diameter (BCD) mm | Bolt Hole Diameter mm | Flange Thickness mm | No. of Bolts | Approx. Weight (kg) |
|---|---|---|---|---|---|---|
| 1/2" | 110 | 85 | 14 | 16 | 4 | 1.2 |
| 1" | 145 | 105 | 14 | 18 | 4 | 2.0 |
| 2" | 185 | 150 | 18 | 20 | 4 | 4.5 |
| 4" | 235 | 190 | 18 | 22 | 8 | 9.5 |
| 6" | 290 | 250 | 22 | 24 | 8 | 17.0 |
| 8" | 345 | 310 | 22 | 26 | 8 | 26.0 |
| 10" | 405 | 370 | 26 | 28 | 12 | 42.0 |
| 12" | 460 | 425 | 26 | 30 | 12 | 58.0 |
Common Types Of Flangess
Ring Flanges
Type of Flanges
General Flanges
Stainless 400 Pipe Flanges
ASME B16.5 Flanges
Stainless 400 Flanges
Frequently Asked Questions (FAQ)
What are Inconel 800, 800H, and 800HT flanges?
Inconel 800 series flanges are high-performance nickel-iron-chromium alloys designed for high-temperature and corrosive environments. 800H and 800HT are high-temperature variants with controlled carbon content and enhanced mechanical properties.
What industries use Inconel 800 series flanges?
They are widely used in chemical processing, petrochemical, power generation, aerospace, and marine industries due to their excellent resistance to oxidation, carburization, and thermal fatigue.
What standards do Inconel 800, 800H, and 800HT flanges comply with?
These flanges are manufactured according to ASTM B564 / SB564, ASME B16.5, and other international standards such as EN 2.4858 and JIS SN NiCr20Fe.
What types of flanges are available in Inconel 800 series?
Common types include Weld Neck, Slip-On, Blind, Socket Weld, and Threaded flanges, suitable for various piping and pressure system applications.
What is the temperature range for Inconel 800, 800H, and 800HT flanges?
Inconel 800 is suitable up to 700°C, 800H up to 850°C, and 800HT up to 950°C for continuous service in oxidizing and corrosive environments.
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