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Gayatri Tubes is the unparalleled manufacturer, exporter, and supplier of the Incoloy 800 / 800H / 800HT Fasteners. We make these fasteners available in a large variety of shapes, sizes, grades, and specifications. Incoloy is a form of a super alloy which comprises of nickel. They provide an excellent resistance against the corrosion. They provide superior strength and are suitable for the conditions of high temperature and pressure. Incoloy 800 is an alloy of iron-chromium-nickel which has a moderate level of strength. It provides an excellent resistance against the oxidation and carburization that takes place in the condition of elevated temperatures. It is extremely useful for the industries that require high-temperature equipment such as the petrochemical industry. The reason for this is due to the fact that it does not forms the stigma phase which is embrittling and takes place when the alloy is exposed to high temperature for a long time.
Yet another major property of these alloys is that they are highly resistance to cracking that occurs due to stress-corrosion from chloride. They are mainly used in heat exchangers, furnace components, and ammonia effluent coolers. Incoloy 800Ht is nothing but a derivative of Incoloy 800 / 800H / 800HT Fasteners in a controlled composition. It is highly used in applications that require creep resistance. The applications of alloy 800Ht are not just limited to petrochemicals but have extended to tubing as well. Other applications of the incoloy 800HT are that they are used in power generators, reheaters, superheaters, etc.
A 1.4958 Fasteners is a device which is used for joining two or more parts together. They are used for creating joints that are not permanent which means it is easy to remove them or dismantle them which will not cause any damage to the component which is joined. They are used in everything from the appliances in our home to the airplanes that we travel in. They have various applications in the industry. The products that we provide are tested completely using various testing schemes such as hardening test, etc. Also, our products are assured to follow all the standards of the industry which are both national and international.
| 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 |
| Specifications | ASTM B425, ASME SB425, F2281 |
| Standard | DIN, ASTM, BS and all International Standards |
| Nuts Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Bolt / Screw Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Washers Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Machine Screws Size | M1.6 - M12 |
| Self Tapping Screw Size | No.2 - No. 14 |
| Length | 3 mm to 200 mm |
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| 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 |
| 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 |
| 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 – 0.60ᴬ | 0.15 – 0.60ᴬ |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 800 / 800H / 800HT | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
