The Hastelloy X Pipe Fittings (UNS N06002) are designed using a solid-solution strengthened nickel-chromium-iron-molybdenum superalloy matrix that provides high mechanical load bearing capacity and resistance to oxidation in severe thermal systems up to 2200°F (1204°C). The alloy matrix has the best resistance to chloride induced stress corrosion cracking (SCC), high ambient ductility and reduced creep distortion profiles over extended service time at high temperatures and cryogenic applications. These factory-wrought fittings are being used as primary fittings on high-pressure industrial furnace components, aircraft afterburners, gas turbine ducting and critical aerospace exhaust paths, thanks to their excellent weldability and local thermal cracking resistance. Metinox Overseas develops and produces these parts with the utmost international manufacturing controls to ensure long-term reliability in severe operating conditions.
| Specifications | ASTM B366 / ASME SB366 |
|---|---|
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size | Seamless Butt Weld Fittings: 1/2" – 10" | Welded Butt Weld Fittings: 1/2" – 48" |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Schedule | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS, Custom Thickness |
| Thickness | 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc. |
| Grade | Ni | Fe | Mn | C | Mo | Cr | Co | Si | P | S |
|---|---|---|---|---|---|---|---|---|---|---|
| X | Balance | 17.00 – 20.00 | 1.00 max | 0.05 – 0.15 | 8.0 – 10.0 | 20.50 – 23.00 | 0.50 – 2.50 | 1.00 max | 0.04 max | 0.03 max |
| Density | Tensile Strength | Melting Point | Elongation | Yield Strength (0.2% Offset) |
|---|---|---|---|---|
| 8.22 g/cm³ | 655 MPa | 1355°C | 35% | 240 MPa |
| Standard | UNS | Werkstoff Nr. |
|---|---|---|
| Hastelloy X | N06002 | 2.4665 |
| Standard Code Reference | Standard Product Classification & Scope Details |
|---|---|
| ANSI/ASME B16.11 | Socket-Welding and Threaded Forged High-Pressure Fittings |
| ASME SB-564 | Material Specification Code for Forged Nickel Alloy Product Blanks (Non-Dimensional Primary Code) |
| MSS SP-83 | Class 3000 Steel and Nickel Alloy Socket-Welding and Threaded Piping Unions |
| MSS SP-79 | Socket-Welding Reducing Insert Sleeves |
| MSS SP-97 | Integrally Reinforced Forged Branch Outlets (Sockolet, Threadolet, Weldolet End Connections) |
| MSS SP-95 | Swaged Nipples and High-Strength Bull Plugs (Corrected Standard Technical Definition) |
Hastelloy X is a solid-solution strengthened nickel-chromium-iron-molybdenum superalloy engineered specifically to maintain high mechanical stability, excellent tensile parameters, and crack deformation resistance under cyclic thermal exposures exceeding 1204°C (2200°F).
Wrought Hastelloy X buttweld fittings are manufactured and stamped according to ASTM B366 and ASME SB366, maintaining geometric tolerances compliant with ASME B16.9 and pressure limits calculated for extreme process safety.
UNS N06002 is the standard designation for Hastelloy X alloy. It guarantees that the raw alloy stock conforms to strict unified elemental limits for critical industrial procurement.
Yes, beyond excellent high-temperature oxidation characteristics, Hastelloy X provides strong resistance to chloride-induced stress corrosion cracking (SCC) and withstands aggressive localized reducing or carburizing atmospheric cycles common in petrochemical refineries.
Yes, Hastelloy X forms a highly stable, adherent protective oxide surface scale that resists spalling and degradation during severe cyclic thermal processing up to 2200°F (1204°C).
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