Inconel 686 Coil Supplier, Stockist and Exporter
Table of Contents
Aurico Alloys LLP supplies inconel 686 coil (N06686, Werkstoff 2.4606) from ready stock in Mumbai, to customers across India and in more than 40 export markets.
Coil is the most economical way to buy sheet-gauge material when parts are blanked, roll-formed or slit to strip, because it removes the cut-length premium and keeps the surface consistent along the whole run.
Inconel 686 carries more molybdenum plus tungsten than C-276, which is what buys the extra margin in hot, contaminated chloride service.
Sizes and Specifications
| Grade | Inconel 686 |
|---|---|
| UNS number | N06686 |
| Werkstoff (W.Nr.) | 2.4606 |
| Specifications | ASTM B575 (sheet and plate), B622 (tube), B574 (rod, bar and wire) |
| Size range | Thickness 0.05 mm to 6.0 mm, width 3 mm to 1250 mm, supplied in slit coil, mill-edge coil or narrow strip. Coil weights and inside diameters are set to suit your decoiler. |
| Condition and finish | Available in annealed and pickled, bright annealed, cold rolled 2B, and No. 4 polished finishes, with edge condition slit, deburred or rolled to order. |
| Certification | EN 10204 3.1 mill test certificate; 3.2 and third-party inspection on request |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N06686 |
| Werkstoff / EN number | 2.4606 |
| Density | 8.73 g/cm3 |
| Melting range | 1338-1380 °C |
| Electrical resistivity | 1.237 µΩ·m |
| Magnetic permeability (at 200 oersted / 15.9 kA/m) | 1.0001 |
| Plate, sheet and strip specification | ASTM B575 / B906 |
Identifiers and physical constants for Inconel 686. A dash means no such designation is published for this grade.
Chemical Composition
Nickel balance with 19-23% chromium, 15-17% molybdenum and 3.0-4.4% tungsten. The combined molybdenum and tungsten give one of the highest pitting resistance equivalent numbers available in a wrought nickel alloy.
| Element | Min (%) | Max (%) |
|---|---|---|
| Chromium (Cr) | 19.0 | 23.0 |
| Molybdenum (Mo) | 15.0 | 17.0 |
| Tungsten (W) | 3.0 | 4.4 |
| Titanium (Ti) | 0.02 | 0.25 |
| Iron (Fe) | — | 2.0 |
| Carbon (C) | — | 0.01 |
| Manganese (Mn) | — | 0.75 |
| Sulfur (S) | — | 0.02 |
| Silicon (Si) | — | 0.08 |
| Phosphorus (P) | — | 0.04 |
| Nickel (Ni) | — | Balance |
Composition limits for Inconel 686. 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
Annealed tensile strength around 720 MPa. Resists both oxidising and reducing acids, and holds up in hot contaminated chloride media that attack alloy 625 and C-276.
Industry Applications
Why this grade
Inconel 686 raises the tungsten over 625 and reaches a PREN of 65 or better, outperforming both 625 and Hastelloy C-276 in ASTM G48 pitting tests. It resists uniform corrosion in oxidising and reducing conditions alike. It costs more than 625, so it is the grade to reach for when the service has already defeated 625 rather than the default.
| Industry | Typical use |
|---|---|
| Pollution control | Flue-gas desulphurisation absorbers, ducting and stack liners. |
| Waste treatment | Incineration scrubbers and acid-condensate handling. |
| Chemical processing | Mixed-acid service, bleaching and halide-bearing streams. |
| Oil and gas | High-chloride sour-service equipment. |
| Pulp and paper | Chlorine dioxide bleaching plant. |
Testing and Certification
Every consignment ships with an EN 10204 3.1 mill test certificate stating heat number, chemical analysis and mechanical properties. Depending on the specification we can add positive material identification, ultrasonic and dye-penetrant testing, intergranular corrosion testing to ASTM G28 or A262, and third-party inspection release from Lloyd's Register, Bureau Veritas, SGS or TUV.
Aurico Alloys LLP operates an ISO 9001:2015 quality management system, and can certify material to NACE MR0175 / ISO 15156 for sour service where the grade permits.
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.