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Inconel 718 Round Bar
High-strength solid round sections for aerospace fasteners, shafts and machined components.
View Inconel 718 Round Bar →Inconel 718 Bar and Rod for High Strength
High-strength precipitation-hardenable nickel alloy bar and rod for aerospace, oil and gas and high-temperature service.
Certified Inconel 718 Material
Specifically, EN 10204 3.1 mill test reports with heat-number traceability accompany every batch.
Custom Bar and Rod Supply
We manufacture dimensions, tolerances and finishes to your requirements.
Reliable Global Delivery
Therefore, you get clear quotations, inspection documents and shipping coordination.
PRODUCT OVERVIEW
About Inconel 718 Bar and Rod
Inconel 718 bar and rod is a precipitation-hardenable nickel-chromium alloy. Moreover, it combines high strength, fatigue resistance and corrosion resistance up to about 700 °C. Therefore, aerospace, turbine, oil and gas and power parts rely on Inconel 718 bar to ASTM B637 and AMS 5662/5663.
The Inconel 718 properties reference collects the composition limits and the room- and elevated-temperature minimums that sit behind ASTM B637 acceptance.
PRODUCT FEATURES
Key Features of Inconel 718 Bar and Rod
Inconel 718 is a precipitation-hardenable nickel-chromium alloy known for high strength, fatigue resistance, and reliable performance at elevated temperatures. Inconel 718 bar and rod are commonly supplied to ASTM B637 and AMS 5662/5663 for aerospace, oil and gas, power generation, and other demanding applications. Round, square, hex, and forged sections ship with EN 10204 3.1 mill certificates.
Inconel 718
High Tensile Strength
Solution treatment and precipitation hardening develop very high strength in Inconel 718 bar.
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Excellent Fatigue Resistance
Components exposed to repeated mechanical and thermal loading get reliable life.
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High-Temperature Strength
Specifically, the alloy maintains useful mechanical performance in demanding elevated-temperature service.
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Cryogenic Capability
Inconel 718 bar retains reliable strength and toughness down to -253 °C.
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Good Weldability
The alloy welds better than many precipitation-hardened nickel superalloys.
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Corrosion Resistance
Moreover, Inconel 718 bar resists oxidation and corrosion across demanding industrial environments.
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Full Material Traceability
Heat numbers and EN 10204 3.1 certificates support incoming inspection.
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Multiple Delivery Conditions
We supply solution-treated, aged or custom heat-treated material to your specification.
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WHY CHOOSE US
Why Choose Inconel 718
When you source Inconel 718 bar and rod, Southerly Alloy supports your quality assurance with periodic third-party sampling. Specifically, laboratories such as TÜV Rheinland test the samples, and we retain the reports for customer reference. As a result, you gain extra quality and traceability assurance.
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Mill-Certified Material
Fully certified Inconel 718 bar carries heat-number traceability with no third-party markups.
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Aerospace-Grade Melting Control
VIM and ESR/VAR melting routes run with condition-specific heat treatment on request.
03
Custom Manufacturing
We produce diameters, cut lengths, tolerances and surface finishes to your drawing and order.
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Reliable Export Service
Furthermore, complete export documentation and dependable delivery support global shipments.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
We process every Inconel 718 bar from vacuum melting to final inspection to match your ordered ASTM B637 or AMS condition. Specifically, complete documentation goes with the material you receive.
01
Raw Material Preparation
We select and weigh nickel, chromium, iron and alloying elements to meet the required UNS N07718 chemistry.
02
Vacuum Induction Melting (VIM)
Melting under vacuum reduces gas pickup and keeps composition control tight.
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Electroslag Remelting (ESR)
Where specified, ESR refines the electrode through a molten slag layer to reduce inclusions and improve homogeneity.
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Vacuum Arc Remelting (VAR)
For aerospace-grade requirements, VAR remelts the electrode to improve ingot cleanliness and structural consistency.
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Hot Forging and Rolling
We break down the remelted ingot to billet and hot work it into the ordered bar section under controlled forging and rolling.
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Solution Treatment
Controlled solution heat treatment prepares the alloy for the specified mechanical condition.
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Precipitation Hardening
Controlled aging develops the characteristic high strength of Inconel 718 bar and rod.
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Finishing and Final Inspection
Peeling, grinding or turning gives the specified surface, and we verify chemistry, mechanical properties, dimensions and surface condition before shipment.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Southerly Alloy supplies Inconel 718 bar and rod in standard and custom dimensions. Specifically, we confirm diameter, cut length, delivery condition and surface finish against your purchase requirements before production. In addition, both solution-treated and aged conditions ship from our programs.
20,000+ m²
Factory Area
Specifically, purpose-built workshops and production space serve nickel alloy orders.
50+
Production Machines
Melting, forging, machining and testing equipment lines support Inconel 718 bar output.
600 Tons
Monthly Capacity
Nickel alloy bar and rod output across standard and custom sizes.
30+
Technical Engineers
Experienced engineers who support your Inconel 718 bar and rod specification.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Quality control for Inconel 718 bar and rod runs under our ISO 9001 system on every heat. Specifically, we verify chemistry, mechanical properties, dimensions, surface and hardness before release. Moreover, each shipment carries EN 10204 3.1 documents, and third-party inspection is available on request.
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Chemical Analysis
A spectrometer checks every heat against the UNS N07718 composition limits in ASTM B637.
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Mechanical Testing
We test tensile, yield and elongation at room temperature, with hardness taken on the aged condition.
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Dimensional and Surface Checks
Diameter, straightness and finish get examined, with UT and PMI available on request.
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Documentation
A heat-number traceable EN 10204 3.1 certificate accompanies every shipment.
PRODUCT FORMS
Available Product Forms
We supply Inconel 718 bar and rod in round, square, hex, flat and forged sections to ASTM B637. Specifically, each form below links to a dedicated Inconel 718 page.
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Inconel 718 Square Bar
Square sections for jigs, supports and machined parts.
View Inconel 718 Square Bar →
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Inconel 718 Hex Bar
Hexagonal bar for high-strength fasteners and multi-flat machining.
View Inconel 718 Hex Bar →
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Inconel 718 Flat Bar
Flat bar cut to ordered width and thickness for fabrication and machined parts.
View Inconel 718 Flat Bar →
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Inconel 718 Rectangle Bar
Rectangular bar for structural members and machined housings.
View Inconel 718 Rectangle Bar →
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Inconel 718 Special-Profile Bar
Custom bar profiles follow your drawings for proprietary parts.
View Inconel 718 Special-Profile Bar →
APPLICATIONS
Engineered For Demanding Industries
Inconel 718 bar and rod serves components that need high strength, fatigue resistance and reliable performance under demanding temperatures or loads. Specifically, typical applications cover aerospace, energy and oil and gas equipment.
Discuss Your Application →
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Aerospace Components
Shafts, fasteners, engine parts and structural members need high strength.
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Gas Turbine Equipment
High-strength components face elevated temperatures and cyclic loading.
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Oil and Gas Equipment
Downhole tools, safety-critical parts and high-strength bolting rely on Inconel 718 bar.
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Cryogenic Systems
Components keep reliable mechanical performance at low temperatures.
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Power Generation
Turbine and high-temperature parts need fatigue and creep resistance.
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Industrial Machinery
Shafts, valves, fasteners and other heavily loaded machined parts use Inconel 718 bar.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The composition limits below follow published ASTM B637-related data for UNS N07718. However, the governing purchase specification always takes precedence for final acceptance on aged bar and rod.
| Element | Content |
|---|---|
| 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% |
| Aluminum (Al) | 0.20–0.80% |
| Cobalt (Co) | ≤1.00% |
| Carbon (C) | ≤0.08% |
| Manganese (Mn) | ≤0.35% |
| Silicon (Si) | ≤0.35% |
| Phosphorus (P) | ≤0.015% |
| Sulfur (S) | ≤0.015% |
| Copper (Cu) | ≤0.30% |
| Boron (B) | 0.002–0.006% |
Mechanical Properties
The following minimum values apply to UNS N07718 bar and rod in the solution-treated and precipitation-hardened condition commonly specified for Inconel 718.
| Condition | Tensile Strength | Yield Strength, 0.2% Offset | Elongation |
|---|---|---|---|
| Solution treated + precipitation hardened | ≥185 ksi (1276 MPa) | ≥150 ksi (1034 MPa) | ≥12% |
Actual requirements depend on the applicable standard, product size and delivery condition; hardness in this condition reaches at least 331 HB. Please specify the required standard and condition for final acceptance.
Physical Properties
| Property | Value |
|---|---|
| Alloy | Inconel 718 |
| UNS | N07718 |
| Werkstoff | 2.4668 |
| Density | Approx. 8.19 g/cm³ |
| Melting Range | Approx. 1260–1336°C |
| Alloy Type | Nickel-chromium-iron |
| Strengthening | Precipitation hardening |
Standards
| Standard | Specification |
|---|---|
| ASTM B637 | Nickel alloy bar, rod, forgings and forging stock for high-temperature service |
| ASME SB637 | ASME specification for pressure equipment applications |
| AMS 5662 | Nickel alloy 718 bar, forgings and rings, solution heat treated |
| AMS 5663 | Nickel alloy 718 bar, forgings and rings, precipitation heat treatable |
| UNS N07718 | Material designation for Inconel 718 |
| W.Nr. 2.4668 | European material number |
ASTM B637 is the principal specification for Inconel 718 bar and rod. In addition, AMS 5662 and AMS 5663 govern much aerospace-related procurement of Inconel 718 bar and rod.
Dimensions
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–500 mm dia. | Single Random, Double Random or Custom |
| Round Rod | 3–50 mm dia. | Single Random, Double Random or Custom |
| Bright Bar | 6–150 mm dia. | Single Random, Double Random or Custom |
| Forged Bar | 100–500 mm dia. or custom forged section | Custom |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Custom |
Available dimensions depend on the manufacturing route, standard, material condition, and order quantity. Please confirm your required diameter, section and length in the inquiry.
Surface Finishes
| Surface Condition | Typical Characteristics / Applications |
|---|---|
| Hot Finished | Supplied in the as-hot-worked condition; suitable for general industrial applications and subsequent machining |
| Cold Drawn | Improved dimensional accuracy and surface finish, with increased strength from cold working |
| Bright Finished | Smooth, bright surface with improved dimensional control; suitable for applications requiring a cleaner surface appearance |
| Peeled | Machined surface with controlled diameter and improved surface uniformity, typically supplied for further machining |
| Centerless Ground | Precision-ground surface with close dimensional tolerances and consistent diameter |
| Polished | Fine surface finish for applications requiring reduced surface roughness |
Heat Treatment
| Condition | Typical Treatment |
|---|---|
| Solution Treated | Solution heat treated according to the specified standard |
| Solution + Age Hardened | Solution treatment followed by controlled precipitation hardening |
| Stress Relieved | Available when specified for the application |
| Custom Condition | Heat treatment according to the agreed specification |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 7 Simple Steps
From inquiry to final shipment, Southerly Alloy keeps the Inconel 718 process simple and efficient. Specifically, we confirm specifications, pricing, inspection, documentation and delivery requirements along the way.
1
Send Your Inquiry
Share grade, diameter, length, quantity and the required standard.
2
Confirm Specifications
Identify ASTM B637, AMS 5662 or AMS 5663 requirements.
3
Receive a Quotation
Review price, delivery condition, lead time and Incoterm.
4
Confirm the Order
Approve the specification, quantity and production schedule.
5
Production and Inspection
We process and test the material against the agreed requirements.
6
Review Documents
Receive inspection certificates and shipment documentation.
7
Arrange Delivery
We coordinate export packing and shipping to your destination.
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM specification applies to Inconel 718 bar?
We commonly supply Inconel 718 bar and rod to ASTM B637.
What standards can you supply for Inconel 718 bar?
ASTM B637, ASME SB637, AMS 5662, or AMS 5663.
What is your MOQ for Inconel 718 bar?
One piece is available for common sizes. Please contact us directly for custom sizes and requirements.
What are your trade terms for Inconel 718 bar?
We price Inconel 718 bar by weight. We mainly quote on FOB terms, and we also quote EXW or CIF based on destination and order size.
How is the price of Inconel 718 bar calculated?
We calculate price per kg from diameter, length, quantity and the prevailing nickel surcharge; every quotation states the Incoterm clearly.
What is the lead time for Inconel 718 bar?
Stock sizes ship in 7-15 days. Custom Inconel 718 bars and rods typically take 25-30 days.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. We can provide EN 10204 3.1 MTC and 3.2 certificates depending on the request.
Can you supply custom sizes of Inconel 718 bar?
Yes. We cut and machine Inconel 718 bar to custom diameters, lengths and delivery conditions against your drawing or specification.
Can you arrange third-party inspection for Inconel 718 bar?
Yes. We arrange third-party inspection on request before shipment, and 3.2 certificates are available when your project requires them.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Southerly Alloy supplies Inconel 718 bar to ASTM B637 and AMS 5662/5663 in standard and custom sizes. Send your Inconel 718 grade, dimensions, quantity and delivery needs to receive a quotation. Moreover, our team confirms the standard and condition, then returns pricing with clear Incoterms.
What information should I include when requesting an Inconel 718 bar quotation?
Please provide diameter, length, quantity, ASTM or AMS standard, delivery condition, surface finish, and destination. This allows us to prepare an accurate quotation.
