01
Precision Flat Bar
Tight-tolerance flat bar for machined and turned Inconel 718 parts.
Request Availability →Inconel 718 Flat Bar
High-strength precipitation-hardened nickel-chromium-iron flat bar for aerospace, oil and gas and high-temperature service.
Mill-Certified Material
Inconel 718 flat bar carries full heat-number traceability on every order.
Custom Bar Supply
Specifically, we cut Inconel 718 flat bar to your sizes, lengths and heat-treatment conditions.
Fast Global Delivery
Therefore, our team ships Inconel 718 flat bar worldwide with complete export papers.
PRODUCT OVERVIEW
About Inconel 718 Flat Bar
Inconel 718 flat bar is a precipitation-hardenable nickel-chromium-iron alloy. Inconel 718 flat bar reaches very high strength through solution treatment and a controlled double age.
We supply Inconel 718 flat bar as hot-worked, cold-drawn, peeled or centerless-ground stock to ASTM B637. Every Inconel 718 flat bar order carries heat-number traceability and EN 10204 3.1 documents for incoming inspection.
In addition, Inconel 718 flat bar shares the UNS N07718 chemistry detailed on our Inconel 718 material page for alloy data.
PRODUCT FEATURES
Key Features of Inconel 718 Flat Bar
Inconel 718 flat bar is a precipitation-hardenable nickel-chromium-iron alloy supplied to ASTM B637 and AMS 5662/5663. We provide UNS N07718 flat bar in solution-treated and aged conditions for aerospace, oil and gas, power generation and cryogenic service. Every Inconel 718 flat bar order carries heat-number traceability and EN 10204 3.1 mill test reports.
Inconel 718
Very High Strength
For example, aged Flat Bar reaches 185 ksi tensile strength with 150 ksi yield.
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Wide Temperature Range
In addition, Flat Bar keeps dependable properties from -253 °C to about 700 °C.
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Outstanding Fatigue Resistance
Moreover, Flat Bar suits cyclic loading in gas turbine and aerospace parts.
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Good Weldability
We weld Inconel 718 flat bar in the solution-treated condition, then age the weldment where needed.
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Oxidation Resistance
Inconel 718 flat bar resists oxidation in hot air up to about 980 °C.
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Cryogenic Toughness
Specifically, Flat Bar retains strength and toughness for cryogenic tanks and tooling.
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Full Traceability
Specifically, every Inconel 718 flat bar order carries heat numbers and EN 10204 3.1 documents.
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Custom Supply
We cut Inconel 718 flat bar to your size, length, condition and packing.
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WHY CHOOSE US
Why Choose Inconel 718
Inconel 718 flat bar needs a supply partner who controls specification, quality and delivery. Southerly Alloy manages your Inconel 718 flat bar order from review to shipment with traceable material.
01
Specification Compliance
We match Inconel 718 flat bar to your ASTM B637 or AMS condition and finish.
02
Quality and Traceability
Specifically, every Inconel 718 flat bar batch ships with EN 10204 3.1 certificates and heat numbers.
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Flexible Supply
In addition, we cut Inconel 718 flat bar to custom sizes, lengths and packing.
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Responsive Service
As a result, our team confirms Inconel 718 flat bar specifications quickly and ships with full export papers.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
From melting to final check, we process Inconel 718 flat bar to your ordered ASTM B637 condition. We control and document each Inconel 718 flat bar stage with full heat-number traceability.
01
Raw Material Selection
We weigh nickel, chromium, iron and niobium to make Inconel 718 flat bar meet UNS N07718 chemistry.
02
Vacuum Induction Melting
First, we melt the Inconel 718 flat bar charge under vacuum to limit gas pickup.
03
ESR or VAR Remelting
Next, ESR or VAR refines the electrode for Inconel 718 flat bar to cut inclusions where specified.
04
Hot Forging and Rolling
Then, we forge and hot roll the ingot into Inconel 718 flat bar with controlled working.
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Solution Treatment
After that, we solution treat Inconel 718 flat bar near 940–1010 °C to prepare the structure for aging.
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Double Aging
Subsequently, a two-step age near 718 °C and 621 °C develops the characteristic strength of Inconel 718 flat bar.
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Dimensional and Surface Checks
We verify Inconel 718 flat bar size, straightness and surface before release.
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Final Inspection and MTR
Finally, we confirm Inconel 718 flat bar chemistry and properties, then issue the MTR.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Specifically, Southerly Alloy supplies Inconel 718 flat bar across the common ASTM B637 forms and conditions. We confirm flat bar size, length, straightness and finish against your order. Moreover, flat bar is one section in our Inconel 718 bar and rod program.
20,000+ m²
Factory Area
Specifically, modern production facilities for Inconel 718 flat bar and dedicated workshops.
50+
Production Machines
Advanced equipment for Inconel 718 flat bar manufacturing.
600 Tons
Monthly Capacity
Inconel 718 flat bar output across standard and custom sizes.
30+
Technical Engineers
Experienced engineers for Inconel 718 flat bar specification support.
30+ Countries
Export Reach
In addition, reliable logistics for Inconel 718 flat bar with full documentation.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Every Inconel 718 flat bar batch passes inspection before release. In addition, we check Inconel 718 flat bar chemistry, mechanical properties, dimensions and surface under our ISO 9001 system.
01
Material Verification
We confirm Inconel 718 flat bar grade and heat against your purchase order.
02
Dimensional Inspection
Specifically, we measure flat bar size, length and straightness to standard and drawing.
03
Testing and Inspection
In addition, we arrange tensile, hardness and NDT tests where your Inconel 718 flat bar specification requires.
04
Certification and Traceability
Every Inconel 718 flat bar delivery includes EN 10204 3.1 certificates with heat numbers.
PRODUCT FORMS
Available Product Forms
Inconel 718 flat bar comes in several conditions and variants for different machining and service needs. Specifically, the list below shows the common Inconel 718 Flat Bar forms we supply.
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Cold-Drawn Flat Bar
Cold-drawn flat bar delivering closer tolerances than hot-finished Inconel 718 stock.
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Bright Flat Bar
Bright-finished flat bar with clean edges and surfaces for Inconel 718 parts.
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04
Saw-Cut Flat Bar
Saw-cut flat bar with machining allowance on all faces.
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Ground Flat Bar
Ground flat bar with close thickness control for Inconel 718.
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06
Forged Flat Bar
Forged flat bar for heavy Inconel 718 fabrications and structures.
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07
Custom Flat Bar
Custom flat bar cut and finished to your drawing.
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APPLICATIONS
Engineered For Demanding Industries
Buyers specify Inconel 718 flat bar wherever parts need very high strength under heat, cold or cyclic load. Specifically, the applications below show typical Inconel 718 Flat Bar uses.
Discuss Your Application →
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Aerospace Brackets
Inconel 718 flat bar machines into high-load brackets and clips.
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Turbine Hardware
Flat bar forms seals, shims and spacers near hot gas paths.
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Welded Assemblies
Flat bar builds welded frames that keep strength after aging.
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Oil and Gas Structures
Flat bar builds subsea clamps and support fabrications.
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Cryogenic Supports
Flat bar holds low-temperature tank internals securely.
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Power Components
Flat bar forms boiler and turbine related Inconel 718 parts.
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Fastener Stock
Flat bar supplies blanks for machined specials and retainers.
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Heat-Treatment Fixtures
Flat bar makes baskets and rails that survive cycling.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
ASTM B637 fixes 50.0–55.0% nickel, 17.0–21.0% chromium, 4.75–5.50% niobium plus tantalum and 0.65–1.15% titanium for UNS N07718, and this flat bar is quoted to the same window. Therefore, niobium and titanium are the elements that age-harden this flat bar.
Consequently, the full composition table on the Inconel 718 material page lists every element against its ASTM B637 limit for this flat bar.
Mechanical Properties
The minimum room-temperature values below apply to UNS N07718 bar in the solution-treated and precipitation-hardened condition. Transverse and heavy-section requirements are lower per AMS 5662; the applicable standard governs final acceptance.
| Condition | Product Size | Tensile Strength | Yield Strength, 0.2% Offset | Elongation | Hardness |
|---|---|---|---|---|---|
| Solution Treated + Precipitation Hardened (AMS 5662 / AMS 5663) | Up to 254 mm (10 in.) | ≥185 ksi (1276 MPa) | ≥150 ksi (1034 MPa) | ≥12% | ≥331 HB |
- The standard double age holds the flat bar near 718 °C (1325 °F) for 8 hours, furnace cools to 621 °C (1150 °F), and holds 18 hours total before air cooling.
Physical Properties
Published references record a density near 8.19 g/cm³ and a melting range of 1260–1336 °C for this flat bar. Moreover, design work on this flat bar starts from the aged condition rather than the annealed one.
In addition, the physical properties table on the Inconel 718 material page carries the modulus, the thermal expansion and the remaining design values behind this flat bar.
Heat Treatment
Precipitation hardening is what separates Inconel 718 flat bar from solid-solution alloys. We supply the flat bar in the condition below that your application needs.
| Condition | Typical Treatment |
|---|---|
| Solution Treated | Held near 940–1010 °C (1725–1850 °F), then air cooled |
| Solution + Age Hardened | Two-step age near 718 °C (1325 °F) and 621 °C (1150 °F) for full strength |
| Stress Relieved | Available when specified for the application |
| Custom Condition | Heat treatment according to the agreed specification |
Standards
ASTM B637 is the principal UNS N07718 bar and rod document for this flat bar, issued by ASTM International. Moreover, ASME SB637 covers pressure equipment built from this flat bar and SAE AMS 5662 and 5663 cover aerospace procurement.
| Standard | Product or Application |
|---|---|
| ASTM B637 | Nickel alloy bar, rod and forgings for high-temperature service |
| ASME SB637 | ASME counterpart for pressure equipment |
| SAE AMS 5662 / 5663 | Nickel alloy 718 bar, forgings and rings |
Overall, the full standards list on the Inconel 718 material page adds the European designations and the remaining product documents for this flat bar.
Dimensions
Therefore, Inconel 718 flat bar dimensions depend on the manufacturing route, standard and order quantity. The table below lists typical supply ranges; please confirm your size in the inquiry.
| Product Form | Typical Supply | Length |
|---|---|---|
| Flat Bar | 3–150 mm thick × 10–250 mm wide | Single Random, Double Random or Custom |
| Precision Flat Bar | 3–100 mm thick × 10–200 mm wide | Custom |
| Cold-Drawn Flat Bar | 3–60 mm thick × 10–150 mm wide | Custom |
| Bright Flat Bar | 3–150 mm thick × 10–250 mm wide | Single Random, Double Random or Custom |
| Saw-Cut Flat Bar | 20–150 mm thick × 50–300 mm wide | Custom |
| Ground Flat Bar | 3–80 mm thick × 10–200 mm wide | Custom |
| Forged Flat Bar | 20–150 mm thick × 50–400 mm wide | Custom |
| Custom Flat Bar | To drawing | Custom |
Available flat bar dimensions depend on the manufacturing route, standard, material condition and order quantity. Please confirm your required flat bar size, section and length in the inquiry.
Surface Finishes
Therefore, the surface condition decides how this flat bar machines and how closely it holds size on a finishing cell. Specifically, we agree the finish on this Inconel 718 flat bar with your order.
| Surface Condition | Typical Use |
|---|---|
| Hot Finished | As-hot-worked surface on this flat bar, for parts machined all over. |
| Cold Drawn | Tighter diameter and finish on this flat bar, with cold work lifting strength. |
| Peeled | Uniform diameter on this flat bar with a machined skin. |
Meanwhile, the surface finishes table on the Inconel 718 material page lists the remaining conditions we quote for this flat bar.
Related forms from the same heat cover Inconel 718 Hex Bar, Inconel 718 Rectangle Bar and Inconel 718 Round Bar when your flat bar order needs them.
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 6 Simple Steps
From first inquiry to delivered Inconel 718 flat bar, our process keeps you informed at every stage. Therefore, most Inconel 718 flat bar orders move from inquiry to shipment in under three weeks.
1
Send Your Inquiry
Send your Inconel 718 flat bar grade, size, length, quantity and standard.
2
Confirm the Specification
State ASTM B637 or AMS with the Inconel 718 flat bar condition and finish you need.
3
Review the Quotation
Receive pricing for Inconel 718 flat bar by dimension, quantity and destination.
4
Confirm the Order
Approve the Inconel 718 flat bar technical spec, terms and schedule.
5
Production and Inspection
We make and inspect your Inconel 718 flat bar to the agreed specification.
6
Shipment and Documentation
Receive Inconel 718 flat bar with EN 10204 3.1 MTC and export papers.
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 Flat Bar?
ASTM B637 and ASME SB637 cover Inconel 718 flat bar; SAE AMS 5662/5663 serve aerospace.
How is the price of Inconel 718 flat bar calculated?
Mainly by weight for Inconel 718 flat bar with the prevailing nickel surcharge.
Can Inconel 718 flat bar be welded?
Yes. We weld Inconel 718 flat bar in the solution-treated condition and age the weldment afterwards where needed.
Is Inconel 718 flat bar hard to machine?
We rough-machine Inconel 718 flat bar in the solution-treated state, then age it to final strength.
What heat treatment does Inconel 718 flat bar need?
Solution treating near 960 °C plus the double age develops full strength in Inconel 718 flat bar.
What applications use Inconel 718 flat bar?
Inconel 718 flat bar serves aerospace fasteners, gas turbine parts, downhole tools and cryogenic equipment.
What is your MOQ for Inconel 718 flat bar?
One piece for many common Inconel 718 flat bar sizes.
What are your trade terms for Inconel 718 flat bar?
Mainly FOB for Inconel 718 flat bar; EXW and CIF also available.
What is the lead time for Inconel 718 flat bar?
Stock Inconel 718 flat bar sizes ship in 7-15 days. Custom sizes take a little longer.
Do you provide EN 10204 3.1 or 3.2 certificates for Inconel 718 flat bar?
Yes. Every Inconel 718 flat bar delivery includes 3.1; 3.2 with third-party endorsement on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Inconel 718 flat bar from Southerly Alloy covers standard and custom sizes to ASTM B637. Send your Inconel 718 flat bar grade, dimensions, quantity and delivery needs to receive a quotation.
Specifically, our team reviews your Inconel 718 flat bar specification, confirms the condition and finish, and returns pricing with clear Incoterms. We then produce and inspect your Inconel 718 flat bar before shipping it with full export documentation.
