High Nickel Alloy Fittings are precision-engineered components designed to join, redirect, or terminate piping systems where corrosion resistance and mechanical strength are paramount. These fittings such as elbows, tees, reducers, and couplings offer excellent weldability and dimensional stability, even under cyclic stresses and thermal fluctuations. Manufactured typically by forging, these fittings ensure leak-proof connections in environments with aggressive chemicals or high temperatures. Their high nickel content significantly improves resistance to chloride stress corrosion cracking and pitting, making them ideal for harsh chemical, marine, and offshore applications.
| Parameter | Details |
|---|---|
| Manufacturing Standards | ASTM B366 (Nickel Alloy Pipe Fittings), ASTM B564 (Forged Fittings), ASME B16.9, B16.11, MSS SP-43, MSS SP-95, DIN, EN, ISO, JIS standards as applicable |
| Material Grades | Inconel 600, 601, 625, 718, X-750 Incoloy 800, 800H, 800HT, 825 Hastelloy C-22, C-276, C-2000, B-2, B-3, G, G-2, X, N Monel 400, K500 Nickel 200, 201 Alloy 20, Alloy 59, Alloy X-750 |
| Product Types | Elbows (90°, 45°, LR, SR), Tees (Equal, Reducing), Reducers (Concentric, Eccentric), Caps, Stub Ends, Couplings, Unions, Nipples, Plugs |
| Size Range | Seamless: 1/2″ to 10″ (DN15 to DN250) Welded: Up to 48″ (DN1200) or custom |
| Wall Thickness | SCH 5S to SCH XXS or as per customer specification (including custom thickness) |
| Connection Types | Butt Weld, Socket Weld, Threaded (NPT/BSP), Flanged Ends (RF/RTJ), Custom Machined Ends |
| Surface Finish | Machined, Pickled, Passivated, Sandblasted, Electro-polished, Bright Annealed |
| Heat Treatment | Solution Annealed, Stress Relieved, Age Hardened (as applicable to alloy and specification) |
| Dimensional Tolerances | As per ASTM, ASME, MSS-SP and customer-specific tolerances |
| Testing & Inspection | PMI (Positive Material Identification), Hydrostatic Test, Radiography (RT), Ultrasonic Test (UT), Hardness Test, Intergranular Corrosion Test (IGC) |
| Mechanical Properties | High tensile strength, yield strength, excellent creep resistance, and superior fatigue performance under high-temperature service |
| Corrosion Resistance | Exceptional resistance to pitting, crevice corrosion, stress corrosion cracking in acids, seawater, and aggressive chemicals |
| Typical Applications | Petrochemical & Refining, Marine, Nuclear & Power Generation, Aerospace, Pulp & Paper, Offshore Platforms, Chemical Process Equipment, Desalination Plants |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175 / MR0103, PED 2014/68/EU, ISO 9001:2015, AD 2000-W0, IBR (India Boiler Regulation) |
| Application | Description |
|---|---|
| Marine Applications | Used in seawater systems due to its excellent resistance to corrosion. |
| Power Generation | Components used in turbines and reactors because of its heat resistance. |
| Chemical and Petrochemical | Ideal for aggressive chemical environments such as chlorides and caustic compounds. |
| Aerospace | Parts exposed to high temperatures, especially in aircraft engines. |
| Electronics | Used in high-performance connectors and conductive parts. |
