Inconel 690 Coil Supplier, Stockist and Exporter
Table of Contents
Aurico Alloys LLP supplies Inconel 690 coil, sheet and slit strip (N06690, Werkstoff 2.4642) to ASTM B168 and B906 from Mumbai, to customers across India and in more than 40 export markets.
Flat 690 is fabricated into equipment for oxidising service: vessels, liners and internals in nitric acid and nitric-hydrofluoric pickling plant, and sheet-metal hardware exposed to hot, sulphur-bearing combustion gas. Coil is how it is bought when the fabrication runs long – tank linings, duct sections and repeated formed parts.
Sizes and Specifications
| Grade | Inconel 690 |
|---|---|
| UNS number | N06690 |
| Werkstoff (W.Nr.) | 2.4642 |
| Specifications | ASTM B168 (plate, sheet and strip); ASTM B906 (general requirements for flat-rolled products) |
| 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 | N06690 |
| Werkstoff / EN number | 2.4642 |
| Density | 8.19 g/cm3 |
| Melting range | 1343-1377 °C |
| Specific heat | 450 J/kg·°C |
| Electrical resistivity | 1.148 µΩ·m |
| Magnetic permeability (at 200 oersted / 15.9 kA/m) | 1.001 |
| Young's modulus | 211 GPa |
| Poisson's ratio | 0.289 |
| Plate, sheet and strip specification | ASTM B168 / B906 |
Identifiers and physical constants for Inconel 690. A dash means no such designation is published for this grade.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 58.0 | — |
| Chromium (Cr) | 27.0 | 31.0 |
| Iron (Fe) | 7.0 | 11.0 |
| Carbon (C) | — | 0.05 |
| Silicon (Si) | — | 0.50 |
| Manganese (Mn) | — | 0.50 |
| Sulfur (S) | — | 0.015 |
| Copper (Cu) | — | 0.50 |
Composition limits for Inconel 690. 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
Sheet and strip are supplied annealed, at around 590–760 MPa tensile, with good formability for fabricated linings and parts. The design value is its 27–31% chromium, which gives resistance to oxidising acids and hot oxidising gas.
Industry Applications
Why Inconel 690 coil
Flat 690 earns its place in oxidising chemistry. Nitric acid and nitric-hydrofluoric pickling solutions attack most nickel alloys with modest chromium, and 690 resists them; so does hot combustion gas carrying sulphur, where 690’s chromium-rich scale holds. For reducing acids and chlorides, a molybdenum-bearing sheet such as 625 is the better choice.
| Industry | Typical use |
|---|---|
| Chemical processing | Vessels, liners and internals for nitric acid service. |
| Metal finishing | Nitric-hydrofluoric pickling tank components. |
| Power generation | Sheet-metal parts in coal gasification and high-sulphur combustion plant. |
| Waste treatment | Incineration hardware exposed to oxidising ash. |
Testing and Certification
Coil is supplied with an EN 10204 3.1 mill test certificate stating heat number, chemical analysis, mechanical properties and temper. Thickness and width are checked against the order; positive material identification and ASTM G28 testing are available on request, with third-party inspection 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.