Inconel 693 Fittings Supplier, Stockist and Exporter
Table of Contents
Aurico Alloys LLP supplies Inconel 693 fittings (UNS N06693) to ASTM B366 from Mumbai, to customers across India and in more than 40 export markets.
A section of synthesis-gas line rebuilt in 693 pipe to stop metal dusting needs its bends and branches in 693 as well. The attack is local and temperature-driven, and an elbow in a lesser alloy sitting in the same band will waste away exactly as the old line did – only now it is the one component the upgrade missed.
Sizes and Specifications
| Grade | Inconel 693 |
|---|---|
| UNS number | N06693 |
| Werkstoff (W.Nr.) | — |
| Specifications | ASTM B366 (factory-made wrought fittings) |
| Size range | Butt-weld fittings 1/2" to 48" NB in Sch 5S to Sch XXS; forged socket-weld and threaded fittings 1/8" to 4" NB in 3000#, 6000# and 9000# classes. |
| Condition and finish | Elbows (45° and 90°, long and short radius), tees (equal and reducing), reducers (concentric and eccentric), caps, stub ends, couplings, unions, plugs and bushings. |
| Certification | EN 10204 3.1 mill test certificate; 3.2 and third-party inspection on request |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N06693 |
| Density | 7.77 g/cm3 |
| Melting range | 1317-1367 °C |
| Electrical resistivity | 1.168 µΩ·m |
| Fittings specification | ASTM B366 |
Identifiers and physical constants for Inconel 693. A dash means no such designation is published for this grade.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance (determined arithmetically by difference) |
| Chromium (Cr) | 27.0 | 31.0 |
| Iron (Fe) | 2.5 | 6.0 |
| Aluminium (Al) | 2.5 | 4.0 |
| Niobium (Nb) | 0.5 | 2.5 |
| Manganese (Mn) | — | 1.0 |
| Titanium (Ti) | — | 1.0 |
| Copper (Cu) | — | 0.5 |
| Silicon (Si) | — | 0.5 |
| Carbon (C) | — | 0.15 |
| Sulfur (S) | — | 0.01 |
Composition limits for Inconel 693. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical and Physical Properties
Fittings are supplied annealed. The property that matters is the chromium and aluminium scale that resists metal dusting and carburisation in synthesis gas, which the fitting needs as much as the pipe.
Industry Applications
Why Inconel 693 fittings
ASTM B366 names UNS N06693 in its scope, so factory-made 693 fittings are a standard product rather than a special. That matters because a metal-dusting repair only works if every component in the affected band is upgraded together: pipe, fittings and the welds between them. Order the fittings with the pipe, to the same heat traceability, so the section can be built and inspected as one.
| Industry | Typical use |
|---|---|
| Petrochemical | Elbows, tees and reducers in syngas lines for ammonia, methanol and hydrogen. |
| Chemical processing | Fittings on syngas reactor connections. |
| Energy | Fittings in high-temperature fuel cell gas systems. |
| Maintenance | Fittings for sections rebuilt in 693 after metal-dusting failures. |
Testing and Certification
Every fitting is marked with grade and heat number and supplied with an EN 10204 3.1 certificate. Positive material identification confirms the aluminium-bearing grade, dye-penetrant testing checks bevels and formed surfaces, and dimensions are checked against the ordered schedule. Third-party inspection is available under our ISO 9001:2015 system.
Frequently Asked Questions
Request a Quotation
Send your size, quantity and specification and we will come back with price and lead time, usually the same working day. Call +91 7977 88 6611 or email info@auricoalloys.com.