Inconel 718 Round Bars are made from a nickel-chromium alloy strengthened by niobium and precipitation-hardening elements. The alloy develops high tensile and creep-rupture strength after suitable heat treatment, making it suitable for turbine components, aerospace hardware and high-temperature engineering parts requiring dimensional stability.
Metalloy Steel supplies Inconel 718 Round Bars in India for machining and critical component manufacturing. Buyers can enquire about ASTM B637 UNS N07718 Round Bars and specified AMS 5662 or AMS 5663 material requirements by sharing the required dimensions, quantity, condition and documentation needs to check availability and request a quotation.
Complete mechanical, dimensional, and standard parameters for ASTM B637 UNS N07718 round bars and rods.
| Specification Parameter | Details |
|---|---|
| Product Name | Inconel 718 Round Bars |
| Material Type | Nickel-Chromium-Iron-Niobium Alloy |
| Common Designation | Alloy 718 |
| UNS Designation | N07718 |
| ASTM Standard | ASTM B637 |
| Aerospace Specifications | AMS 5662 / AMS 5663, subject to product condition and specification |
| Werkstoff Number | 2.4668 |
| JIS Reference | NCF 718 |
| EN Designation | NiCr19NbMo |
| Available Forms | Round bars and rods |
| Supply Condition | Solution-treated, aged or other specified condition, subject to specification and availability |
| Dimensions | Diameter and length as per requirement |
| Surface Finish | Black, bright, polished or machined, subject to availability |
Graded chemical chemistry and physical-mechanical metrics of Inconel 718 (UNS N07718 / 2.4668).
| Standard / Designation | Reference |
|---|---|
| Alloy Name | Inconel 718 / Alloy 718 |
| UNS | N07718 |
| Werkstoff Number | 2.4668 |
| JIS Reference | NCF 718 |
| EN Designation | NiCr19NbMo |
| AFNOR Reference | NC 19 FeNb |
| ASTM Standard | ASTM B637 |
| Aerospace Specifications | AMS 5662 / AMS 5663 |
| Element | Chemical Symbol | Composition (%) |
|---|---|---|
| Nickel | Ni | 50.0–55.0 |
| Chromium | Cr | 17.0–21.0 |
| Iron | Fe | Balance |
| Niobium + Tantalum | Nb + Ta | 4.75–5.50 |
| Molybdenum | Mo | 2.80–3.30 |
| Titanium | Ti | 0.65–1.15 |
| Aluminium | Al | 0.20–0.80 |
| Carbon | C | 0.08 max |
| Manganese | Mn | 0.35 max |
| Silicon | Si | 0.35 max |
| Copper | Cu | 0.30 max |
| Cobalt | Co | 1.00 max |
| Sulfur | S | 0.015 max |
| Phosphorus | P | 0.015 max |
| Boron | B | 0.006 max |
| Property | Reference Value |
|---|---|
| Density | 8.19 g/cm³ |
| Melting Range | 1260–1336°C |
| Tensile Strength | 1275 MPa (185,000 psi) minimum |
| Yield Strength (0.2% Offset) | 1034 MPa (150,000 psi) minimum |
| Elongation | 12% minimum |
For other available alloy and stainless steel grades, explore our Round Bars range.
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Inconel 718 Round Bars are selected by heat-treatment condition and finish, as these influence strength, machinability and suitability for the finished component.
Supplied in a condition suitable for subsequent age hardening where the manufacturing process requires it.
Heat-treated to develop high strength for demanding load-bearing components.
Feature a smoother surface finish for precision machining and component preparation.
Supplied to specified lengths to match machining plans and component dimensions.
* Availability and compliance with ASTM B637, AMS 5662 or AMS 5663 should be confirmed against the required material condition and order specification.
Precipitation-hardened superalloy engineered for exceptional creep resistance, extreme mechanical strength, and cryogenic-to-high-temperature reliability.
Precipitation hardening develops high tensile and yield strength for components exposed to substantial mechanical loads.
The alloy retains useful strength under sustained loading at elevated temperatures, supporting turbine and other high-temperature engineering applications.
Compared with many precipitation-hardening nickel alloys, Inconel 718 offers good weldability when appropriate procedures and post-weld heat treatment are used.
It maintains useful mechanical properties across a broad temperature range, including cryogenic service and selected elevated-temperature applications.
Typical components and high-integrity engineering sectors relying on UNS N07718 superalloy round bars.
| Industry | Typical Components / Uses |
|---|---|
| Aerospace | Engine shafts, turbine discs, spacers and high-strength structural components |
| Gas Turbines & Power Generation | Rotating components, turbine hardware and parts exposed to sustained thermal loads |
| Oil & Gas | Downhole tools, wellhead components, high-strength fasteners and pressure-control equipment |
| Chemical Processing | Pump shafts, valve components and equipment requiring strength and corrosion resistance |
| Cryogenic Engineering | Precision components operating at very low temperatures where mechanical strength must be maintained |
| Industrial Engineering | High-strength springs, machined parts, shafts and specialised fasteners |
Metalloy Steel can discuss inspection and documentation requirements for Inconel 718 Round Bars according to the purchase specification and order scope.
Can be requested, subject to availability, for heat-specific material and test details.
Can help verify alloy identity against the specified grade.
Can be specified to verify the required elemental composition.
Tensile strength, yield strength and elongation testing can be requested according to the applicable specification and condition.
Checks diameter, length, surface condition and specified tolerances.
Independent inspection may be arranged through an agreed agency, subject to availability and project requirements.
Clear technical answers to frequent queries regarding Inconel 718 round bar supply, heat treatment, and specifications.
Enquiries can specify ASTM B637 and UNS N07718, along with dimensions, required material condition and documentation.
These specifications cover different material conditions and processing requirements. AMS 5662 generally covers solution-treated material, while AMS 5663 covers precipitation-treated material. Confirm the required condition for your application before ordering.
Age hardening develops the alloy's high tensile and yield strength. The required heat-treatment process depends on the applicable specification and component requirements.
Yes. They are used in turbine and other engineering components requiring creep and stress-rupture resistance. Suitability depends on temperature, loading and operating conditions.
Yes. Both operations are possible with suitable procedures. Machining parameters and heat-treatment requirements should be considered to achieve the specified component properties.
Provide the required diameter, length, quantity, standard, material condition, delivery location and any inspection or documentation requirements.
Contact Metalloy Steel to enquire about Inconel 718 Round Bars in India as per ASTM B637 and UNS N07718. Share your required dimensions, quantity, material condition and delivery location, along with any AMS 5662 or AMS 5663, inspection or documentation requirements, to check availability and request a quotation.
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