Hunan Dinghan New Material Technology Co., LTD
A professional manufacturer of high-temperature alloy accessories and corrosion-resistant alloy accessories for high-end valves
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API 6A Nickel Alloy Inconel 718 Ring Type Joint Gasket in Flanges and Pipe Fittings
API 6A nickel alloy inconel 718 ring type joint gasket has excellent mechanical properties like tensile, fatigue and creep-rupture, and it has excellent welding characteristics, resistant to postweld age cracking, oxidation resistant throughout its useful temperature range.
API 6A nickel alloy inconel 718 ring type joint gasket is made of Inconel 718, and inconel 718 is a high strength nickel base superalloy used for cryogenic temperatures up to long term service at 1200°F. The alloy is readily fabricated and may be welded in either the annealed or precipitation (age) hardened condition. Anneal 1700 -1850°F, air cool or faster. Age 1325°F 8 hours, furnace cool to hold at 1150°F, for a total aging time of 18 hours, air cool.
Applications:
Heat exchangers
Valves and pumps
Pressure vessels
Flanges and pipe fittings
Reactor vessels and agitators
| Grade | UNS | Density |
Tensile Strength (MPa min) |
Yield Strength (MPa min) |
Reduction of Area min (%) | Elongation min (%) | Hardness (HRC) |
| INCONEL 718 | N07718 | 8.19 | 1275MPa min | 1034MPa min | 15% | 12% min | HRC 35-40 |
| Ni | Cr | Fe | C | Mn | S | Si |
| 50.0-55.0 | 17.0-21.0 | Remainder | 0.08max | 0.35max | 0.015max | 0.35max |
| B | P | Mo | Ti | Al | Cu | Co |
| 0.006max | 0.015max | 2.8-3.3 | 0.65-1.15 | 0.2-0.8 | 0.3max | 1.0max |
| Gasket Material | DIN Grade | ASTM Grade | Werkstoff number |
| MONEL 400 | NiCu30Fe | N04400 | 2.436 |
| INCONEL 600 | NiCr15Fe | N06600 | 2.4816 |
| INCONEL 625 | NiCr22Mo9Nb | N06625 | 2.4856 |
| INCONEL 718 | / | N07718 | / |
| INCOLOY 800 | X5NiCrAlTi31-20 | N08800 | 1.4958 |
| INCOLOY 825 | NiCr21Mo | N08825 | 2.4858 |
| INCOLOY 028 | X1NiCrMoCuN 31 27 4 | N08028 | 1.4563 |
| HASTELLOY C276 | NiMo16Cr15W | N10276 | 2.4819 |
| F44 | X1CrNiMoCuN20-18-7 | S31254 | 1.4547 |