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Inconel 718 round bar
high-strength solid round sections for aerospace fasteners, shafts and machined components
Request Availability →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
EN 10204 3.1 mill test reports with heat-number traceability on every batch
Custom bar and rod supply
dimensions, tolerances and finishes manufactured to your requirements
Reliable global delivery
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 that combines high strength, fatigue resistance, and good corrosion resistance. The alloy retains useful mechanical performance from cryogenic conditions up to elevated temperatures of about 700°C. It is the standard choice for aerospace, gas turbine, oil and gas, and power-generation components exposed to heavy loads. Southerly Alloy supplies Inconel 718 bar and rod to ASTM B637 and AMS 5662/5663 with full traceability and mill certificates.
PRODUCT FEATURES
Key Features of Inconel 718 Bar and Rod
[Inconel 718](https://www.southerly-alloy.com/alloy718/) 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.
Inconel 718
High tensile strength
develops very high strength through solution treatment and precipitation hardening
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Excellent fatigue resistance
suitable for components exposed to repeated mechanical and thermal loading
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High-temperature strength
maintains useful mechanical performance in demanding elevated-temperature service
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Cryogenic capability
retains reliable strength and toughness at low temperatures down to -253°C
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Good weldability
offers better weldability than many precipitation-hardened nickel superalloys
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Corrosion resistance
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
available solution treated, aged or custom heat treated 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 quality assurance through periodic third-party sampling and testing by laboratories such as TÜV Rheinland. Test reports are retained for customer reference, providing additional verification of material quality and traceability.
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Direct factory supply
mill-direct Inconel 718 bar with heat-number traceability and no third-party markups
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Aerospace-grade melting control
VIM and ESR/VAR melting routes with condition-specific heat treatment on request
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Custom manufacturing
diameters, cut lengths, tolerances, and surface finishes produced to your drawing and order
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Reliable export service
complete export documentation and dependable delivery for global shipments
MANUFACTURING PROCESS
Reliable Production For Critical Applications
From vacuum melting to final inspection, we process every Inconel 718 bar with controlled melting and heat treatment, so the material you receive matches the ordered ASTM B637 or AMS condition, with complete documentation.
01
Raw material preparation
Nickel, chromium, iron, and alloying elements are selected and weighed to meet the required UNS N07718 chemistry.
02
Vacuum Induction Melting (VIM)
The charge is melted under vacuum to limit gas pickup and maintain tight control of composition.
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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
The ingot is converted to billet, then forged or hot rolled to the required bar section with controlled working.
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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 provides the specified surface, and chemistry, mechanical properties, dimensions, and surface condition are verified before shipment.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Southerly Alloy operates dedicated nickel alloy production lines with vacuum melting, forging, heat treatment, and precision finishing, supporting Inconel 718 bar and rod in standard and custom dimensions. We confirm diameter, cut length, delivery condition, and surface finish against your purchase requirements before production.
20,000+ m²
Factory Area
modern production facilities and dedicated workshops
50+
Production Machines
advanced equipment supporting precision alloy manufacturing
600 tons
Monthly Capacity
nickel alloy bar and rod output across standard and custom sizes
30+
Technical Engineers
experienced engineers providing technical support
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Each Inconel 718 bar and rod batch is typically sampled and inspected against the agreed specification before release, covering chemical composition, mechanical properties, dimensions, and surface condition under our ISO 9001 quality management system. EN 10204 3.1 documentation is supplied when required, with third-party inspection available on request.
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Chemical analysis
composition verified by spectrometer against the required UNS N07718 limits
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Mechanical testing
tensile, yield, elongation, and hardness confirmed on the ordered condition
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Dimensional and NDT checks
size, straightness, and surface examined, with UT / PMI on request
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Documentation
EN 10204 3.1 mill test certificate with heat-number traceability on every delivery
PRODUCT FORMS
Available Product Forms
Inconel 718 bar and rod are supplied in round, square, hex, flat, and forged sections in solution-treated and aged conditions to ASTM B637.
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Inconel 718 rod
smaller-diameter round stock with controlled straightness for precision machining
Request Availability →
03
Inconel 718 bright bar
bright-finished bar for applications requiring improved surface and dimensional control
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Inconel 718 cold-drawn bar
cold-worked bar with tighter tolerances than hot-finished material
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Inconel 718 forged bar
larger or shaped sections with a controlled wrought structure for demanding service
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Inconel 718 square bar
square sections for supports, fixtures, and machined components
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Inconel 718 hex bar
hexagonal bar for high-strength fasteners and multi-flat machining
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Inconel 718 flat bar
flat sections where width and thickness are specified for fabrication
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Precision-ground rod
centerless-ground Inconel 718 rod for tight diameter and straightness
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APPLICATIONS
Engineered For Demanding Industries
Inconel 718 bar and rod is specified for components requiring high strength, fatigue resistance, and reliable performance under demanding temperatures or mechanical loads. 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 components requiring high strength
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Gas turbine equipment
high-strength components exposed to elevated temperatures and cyclic loading
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Oil and gas equipment
downhole tools, safety-critical components and high-strength bolting
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Cryogenic systems
components requiring reliable mechanical performance at low temperatures
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Power generation
turbine and high-temperature components requiring fatigue and creep resistance
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Industrial machinery
shafts, valves, fasteners and other heavily loaded machined parts
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The following composition limits are based on published ASTM B637-related data for UNS N07718. The governing purchase specification always takes precedence for final acceptance.
| 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.
| Property | Value |
|---|---|
| Tensile Strength | ≥185 ksi (1276 MPa) |
| Yield Strength, 0.2% Offset | ≥150 ksi (1034 MPa) |
| Elongation | ≥12% |
| Hardness | ≥331 HB |
Actual requirements depend on the applicable standard, product size and delivery condition. 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. AMS 5662 and AMS 5663 are widely associated with Inconel 718 bar and rod for aerospace-related procurement.
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 process simple and efficient, with specifications, pricing, inspection, documentation, and delivery requirements clearly confirmed along the way.
1
Send your inquiry
share grade, diameter, length, quantity, and 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
material is processed and tested against the agreed requirements
6
Review documents
receive inspection certificates and shipment documentation
7
Arrange delivery
export packing and shipping are coordinated to your destination
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The Inconel 718 bar documentation clearly identified the material condition and heat number for our incoming inspection.”
★★★★★
“The Inconel 718 round bar was supplied to the required diameter and specification for our machining project.”
★★★★★
“Our AMS 5662 Inconel 718 bar order arrived with complete heat traceability and matched the agreed mechanical condition.”
CERTIFICATIONS
Qualified Quality System
EN 10204 3.1 certificates are available, while third-party endorsed 3.2 certification can be arranged when required.
ISO 9001:2015
Quality Management System
EN 10204 3.1
Mill test certificate with heat traceability
EN 10204 3.2
Third-party endorsed inspection certificate
ASTM B637 / AMS 5662 / 5663
Material standards compliance
FAQ
Frequently Asked Questions
Which ASTM specification applies to Inconel 718 bar?
Inconel 718 bar and rod are commonly supplied 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?
FOB mainly; EXW, CIF, CFR, etc. are available.
How is the price of Inconel 718 bar calculated?
Typically priced by weight.
What is the lead time for Inconel 718 bar?
Stock sizes ship in 7-15 days. Custom Inconel 718 bars and rods are typically delivered within 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.
Can you arrange third-party inspection for Inconel 718 bar?
Yes.
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.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send us your requirements including material grade, dimensions, quantity and standards.
