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Gayatri Tubes produce Incoloy 800 / 800H / 800HT Compression Tube Fittings. These tube fittings are useful in electrical conduit systems and plumbing systems. They join thin pipes together irrespective of their material. However, the tube fittings, joining pipes made either of copper or PVC should make of compatible materials. Also, the tube fittings have ferrules when used for attaching pipes. Hot and cold water applications usually use compression tube fittings. This is because soldering is not required for making a connection. In addition to this, they make reconnecting and disconnection easy.
Incoloy UNS N08800, N008810, N08811 Compression Tube Fittings are traditionally available in two types. Manipulative and non-manipulative fitting types are two standard ones. They require no modifications. However, a special tool is required to modify the flare fittings. Applications where compressed air and water are used, standard fittings are preferred. On the other hand, high-pressure lines and gaseous applications use flare fittings. Push-in compression fittings are new in the category. All types of compression fittings offer similar advantages. Typical applications include furnaces using acetic acid, diphenol, vinyl chloride, hydrocarbon cracking, and ethylene pyrolysis. Moreover, the use of Incoloy 800 / 800H / 800HT makes them corrosion resistant in many acidic environments. Their ability to withstand prolonged exposure to high-temperature corrosion makes them special. Inconel 800 is nickel-iron-chromium that proffers excellent oxidant resistant, good strength, and more. However, Inconel 800H have a higher percentage of carbon. The carbon control in Inconel 800 gives them stress rupture properties. In Inconel 800HT further modifications are done to improve its property. The aluminum level is increased to .85-1.20% and titanium is also added. This makes the fittings suitable in high-temperature conditions.
However, these nickel alloys are SCC resistant. They show less embrittlement to precipitation as well. The major applications of these fitting are petrochemical, power plants, hydrocarbon, chemical, oil and gas, gas procession, and more. These entire industries have high-temperature conditions where compression tube fittings are good to use. In nitriding and oxidation atmospheres, they show resistance to embrittlement even for prolonged use in the temperature range of 1200-1600 degree F. Creep and rupture does not affect these fittings.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | NA 15 | ЭИ670 | Z8NC32-21 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | NCF 800H | NA 15(H) | ЭИ670 | Z8NC33-21 | X5NiCrAlTi31-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | NA 15(HT) | ЭИ670 | - | X8NiCrAlTi32-21 | XH32T |
| PTFE Standards | ASTM D1710, ASTM D3294 |
| Size | 1/16”OD to 2”OD, 2mm OD to 50mm OD |
| Thread | NPT, BSP, BSPT, UNF, ISO, SAE etc. |
| Pressure Rating | 6000 PSI for Incoloy, 300/1000/3000PSI for Brass |
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Alloy 800 | 0.10 max | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| Alloy 800H | 0.05 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| Alloy 800HT | 0.06 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 800 / 800H / 800HT | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
