Inconel 783 Round Bar Supplier, Stockist and Exporter
Table of Contents
Aurico Alloys LLP supplies inconel 783 round bar (R30783) from ready stock in Mumbai, to customers across India and in more than 40 export markets.
Round bar is the starting stock for machined and forged parts, so straightness, surface condition and through-thickness properties govern how it performs downstream. Need mill-run stock for onward forging or ring rolling instead? See Inconel 783 Billets.
Inconel 783 keeps a low thermal expansion coefficient while resisting oxidation, so turbine clearances stay tight without the alloy scaling away.
Sizes and Specifications
| Grade | Inconel 783 |
|---|---|
| UNS number | R30783 |
| Werkstoff (W.Nr.) | — |
| Specifications | AMS 5940 and ASTM B637 as applicable |
| Size range | Diameter 3 mm to 400 mm in hot rolled, forged, peeled and cold drawn condition, random or cut lengths. |
| Condition and finish | Black, rough turned, peeled and ground, or centreless ground and polished. |
| Certification | EN 10204 3.1 mill test certificate; 3.2 and third-party inspection on request |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | R30783 |
| Density | 7.81 g/cm3 |
| Melting range | 1336-1407 °C |
| Specific heat (25 °C) | 455 J/kg·°C |
| Rod and bar specification | AMS 5940 / ASTM B637 |
Identifiers and physical constants for Inconel 783. A dash means no such designation is published for this grade.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Chromium (Cr) | 2.5 | 3.5 |
| Nickel (Ni) | 26.0 | 30.0 |
| Iron (Fe) | 24.0 | 27.0 |
| Niobium (Nb) | 2.5 | 3.5 |
| Aluminium (Al) | 5.0 | 6.0 |
| Cobalt (Co) | — | Balance |
| Boron (B) | 0.003 | 0.012 |
| Carbon (C) | — | 0.03 |
| Manganese (Mn) | — | 0.50 |
| Silicon (Si) | — | 0.50 |
| Phosphorus (P) | — | 0.015 |
| Sulfur (S) | — | 0.005 |
| Titanium (Ti) | 0.1 | 0.4 |
| Copper (Cu) | — | 0.50 |
Composition limits for Inconel 783. 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
Combines a low coefficient of thermal expansion with oxidation resistance that conventional controlled-expansion alloys lack, holding useful strength to about 700°C.
Industry Applications
| Industry | Typical use |
|---|---|
| Aerospace | Turbine shroud rings, casings and seal supports. |
| Aerospace | Clearance-control hardware where thermal growth must be minimised. |
| Power generation | Industrial gas-turbine sealing components. |
| Instrumentation | Dimensionally stable high-temperature structures. |
| Research | Fixtures needing controlled expansion at temperature. |
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.