Inconel 718 Round Bars are high quality nickel based alloy bars that are manufactured to service very high strength, dimensional stability and corrosion resistance of elements that are subjected to extreme service life. Alloy 718 round bars and rods are widely used in the design of aerospace, offshore, oil and gas, nuclear, and chemical processing products because of their high fatigue resistance and weldability.
These bars are available in a variety of profiles, which are round, hex, square, forged, and precision-grounded making Inconel 718 rod and bar stock to be used in shafts, fasteners, turbine components, and other essential load-bearing components. We are long time suppliers of Inconel 718 round bar and are offering certified material of custom size and worldwide delivery services.
ASTM B637 UNS N07718 Inconel 718 Bar Suppliers & Exporter in USA
Inconel Alloy 718 is a high-pressure harnessing nickel-chromium superalloy that was developed in order to possess mechanical integrity at high temperature and high stress. Strengthening is achieved through controlled aging, where nickel and niobium form the γ'' (gamma double-prime) phase, delivering exceptional creep and fatigue resistance.
Our 718 Inconel round bars are made in line with the ASTM B637 UNS N07718, and supplied in either hot-worked, cold-drawn or forged as per the requirements of the application. The long-term performance of the Inconel 718 bars can be improved through solution annealing and age hardening, thus Inconel 718 bars are recommended in aerospace engines, gas turbines, marine systems and high-temperature structural components.
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Table of Contents
- Inconel 718 Bar Product Forms
- Specifications of Inconel 718 Round Bars
- Chemical Composition of Inconel 718 Bars
- Mechanical Properties Inconel 718 Rods
- Physical Properties of Alloy 718 Round Bar
- Equivalent Grades of ASTM B637 Inconel 718 Bars
- UNS N07718 Round Bar Size Chart
- Inconel 718 Bars HS Code
- Nickel Alloy 718 Round Bar Tolerances
- Inconel 718 rods Manufacturing & Processing
- Applications of Nickel Alloy 718 Bars
- Testing & Inspection of Inconel UNS N07718 Bar
- Related Products
Inconel 718 Bar Product Forms
To support diverse machining and fabrication needs, Inconel 718 bar stock is available in multiple profiles:
Inconel 718 Hex Bar
Alloy 718 Flat Bar
Nicrofer 5219 Square Bar
DIN 2.4668 Rectangle Bar
Nickel 718 Bright Bar
Inconel 2.4668 Polished Bar
Werkstoff 2.4668 Cold Drawn Bar
UNS N07718 Forged Bar
Specifications of Inconel 718 Round Bars
| Parameter | Details |
|---|---|
| Grade | Inconel 718 – UNS N07718 |
| Specifications | ASTM B637 / ASME SB637, AMS 5662, AMS 5663, AMS 5664, ASTM B649 |
| Applicable Standards | ASTM, ASME, API, DIN, EN, AISI, UNS, GB |
| Diameter Range | 3 mm to 800 mm |
| Surface Finish | Bright, Polished, Rough Turned, Ground, Black |
| Condition / Supply State | Annealed, Cold Drawn, Centreless Ground |
| Available Forms | Round Bar, Rod, Hex, Square, Forged, Precision Ground |
Chemical Composition of Inconel 718 Bars
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | 50.00 | 55.00 |
| Chromium (Cr) | 17.00 | 21.00 |
| Molybdenum (Mo) | 2.80 | 3.30 |
| Niobium (Nb) | 4.75 | 5.50 |
| Titanium (Ti) | 0.65 | 1.15 |
| Aluminum (Al) | 0.20 | 0.80 |
| Carbon (C) | – | 0.08 |
| Phosphorus (P) | – | 0.015 |
| Sulfur (S) | – | 0.015 |
| Cobalt (Co) | – | 1.00 |
| Boron (B) | – | 0.006 |
Mechanical Properties Inconel 718 Rods
| Orientation | Yield Strength | Tensile Strength | Elongation | Reduction of Area |
|---|---|---|---|---|
| Longitudinal (≤10”) | 150 ksi | 185 ksi | 12% | 15% |
| Transverse (>5”–10”) | 145 ksi | 180 ksi | 6% | 8% |
Physical Properties of Alloy 718 Round Bar
| Property | Value |
|---|---|
| Density | 8.17 g/cm³ |
| Melting Point | 1430°C |
| Operating Temperature | −423°F to 1300°F |
Equivalent Grades of ASTM B637 Inconel 718 Bars
| Standard | Designation |
|---|---|
| UNS | N07718 |
| Werkstoff | 2.4668 |
| DIN | 2.4668 |
| Trade Names | Inconel® 718, Alloy 718, Nicrofer 5219 Nb |
UNS N07718 Round Bar Size Chart
| ASTM/ Canadian | Metric | Japanese | US Bar | ||||
|---|---|---|---|---|---|---|---|
| Diameter (mm2) | Bar Size | Diameter(mm) | Bar Size | Diam. (mm) | Bar Size | Diameter (Inch) | Bar Size |
| 300 | 20M | 6 | 6 | 13 | 13 | 0.500 | #4 |
| 200 | 15M | 5.5 | 5.5 | 10 | 10 | 0.375 | #3 |
| 700 | 30M | 8 | 8 | 19 | 19 | 0.750 | #6 |
| 1000 | 35M | 9 | 9 | 22 | 22 | 0.875 | #7 |
| 500 | 25M | 7 | 7 | 16 | 16 | 0.625 | #5 |
| 2500 | 55M | 11 | 11 | 29 | 29 | 1.125 | #9 |
| 100 | 10M | 5 | 5 | 6 | 6 | 0.250 | #2 |
| 1500 | 45M | 10 | 10 | 25 | 25 | 1.000 | #8 |
| - | - | 14 | 14 | 35 | 35 | 1.375 | #11 |
| - | - | 32 | 32 | - | - | - | - |
| - | - | 12 | 12 | 32 | 32 | 1.250 | #10 |
| - | - | 20 | 20 | 44 | 44 | 1.750 | #14 |
| - | - | 22 | 22 | 48 | 48 | 1.875 | #15 |
| - | - | 16 | 16 | 38 | 38 | 1.500 | #12 |
| - | - | 18 | 18 | 41 | 41 | 1.625 | #13 |
| - | - | 28 | 28 | 57 | 57 | 2.250 | #18 |
Inconel 718 Bars HS Code
| Product Description | HS Code |
|---|---|
| Inconel 718 Bar | 75051220 |
Nickel Alloy 718 Round Bar Tolerances
| Alloy(s) | Condition | (over(+)/under(-)) Diameter Tol. | in. Spec. Diameter |
|---|---|---|---|
| 718 | Hot Rolled | + 0.125", - 0.063" | Over 4 |
| 718 | Hot Rolled | + 0.031", - 0.016" | Over 1 to 2, incl. |
| 718 | Hot Rolled | +/- 0.016" | Up to 1, incl. |
| 718 | Hot Rolled | + 0.047", - 0.031" | Over 2 to 4, incl. |
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Inconel 718 rods Manufacturing & Processing
Inconel 718 round bars are produced using:
- Hot Rolling
- Cold Drawing
- Forging
- Peeling & Grinding
Hot working is typically performed below 2050°F, followed by controlled heat treatment to achieve the required mechanical properties.
Inconel 718 Round Bars Heat Treatment Cycles
| Treatment | Process |
|---|---|
| Solution Annealing | 1700°F – 1850°F, air cool |
| Precipitation Hardening | 1325°F for 8 hrs → furnace cool to 1150°F |
Inconel 718 Bars Surface Finishes Available
- Polished
- Bright Drawn
- Rough Turned
- Peeled & Turned
- Centreless Ground
- Hot Finished / Cold Finished
Applications of Nickel Alloy 718 Bars
- Aerospace engine components
- Gas turbines
- Oil & gas drilling tools
- Marine engineering systems
- Chemical processing equipment
- Motorsport & defense components
Testing & Inspection of Inconel UNS N07718 Bar
Each batch of Inconel 718 round bar and rod can be supplied with:
- Chemical & Spectro Analysis
- Mechanical Testing
- PMI Testing
- Eddy Current Testing
- Radiography & Third-Party Inspection
- Hardness & Microstructure Examination
We export Inconel 718 bars globally to Europe, the Middle East, Asia-Pacific, Africa, and North America.
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