01
Cold-Drawn Square Bar
Cold-drawn square bar with tighter across-flats tolerances for Inconel 718.
Request Availability →Inconel 718 Square Bar
High-strength precipitation-hardened nickel-chromium-iron square bar for aerospace, oil and gas and high-temperature service.
Mill-Certified Material
Inconel 718 square bar carries full heat-number traceability on every order.
Custom Bar Supply
Specifically, we cut Inconel 718 square bar to your sizes, lengths and heat-treatment conditions.
Fast Global Delivery
Therefore, our team ships Inconel 718 square bar worldwide with complete export papers.
PRODUCT OVERVIEW
About Inconel 718 Square Bar
Inconel 718 square bar is a precipitation-hardenable nickel-chromium-iron alloy. Inconel 718 square bar reaches very high strength through solution treatment and a controlled double age.
We supply Inconel 718 square bar as hot-worked, cold-drawn, peeled or centerless-ground stock to ASTM B637. Every Inconel 718 square bar order carries heat-number traceability and EN 10204 3.1 documents for incoming inspection.
In addition, Inconel 718 square bar shares the UNS N07718 chemistry detailed on our Inconel 718 material page for alloy data.
PRODUCT FEATURES
Key Features of Inconel 718 Square Bar
Inconel 718 square bar is a precipitation-hardenable nickel-chromium-iron alloy supplied to ASTM B637 and AMS 5662/5663. We provide UNS N07718 square bar in solution-treated and aged conditions for aerospace, oil and gas, power generation and cryogenic service. Every Inconel 718 square bar order carries heat-number traceability and EN 10204 3.1 mill test reports.
Inconel 718
Very High Strength
For example, aged Square Bar reaches 185 ksi tensile strength with 150 ksi yield.
01
Wide Temperature Range
In addition, Square Bar keeps dependable properties from -253 °C to about 700 °C.
02
Outstanding Fatigue Resistance
Moreover, Square Bar suits cyclic loading in gas turbine and aerospace parts.
03
Good Weldability
We weld Inconel 718 square bar in the solution-treated condition, then age the weldment where needed.
04
Oxidation Resistance
Inconel 718 square bar resists oxidation in hot air up to about 980 °C.
05
Cryogenic Toughness
Specifically, Square Bar retains strength and toughness for cryogenic tanks and tooling.
06
Full Traceability
Specifically, every Inconel 718 square bar order carries heat numbers and EN 10204 3.1 documents.
07
Custom Supply
We cut Inconel 718 square bar to your size, length, condition and packing.
08
WHY CHOOSE US
Why Choose Inconel 718
Inconel 718 square bar needs a supply partner who controls specification, quality and delivery. Southerly Alloy manages your Inconel 718 square bar order from review to shipment with traceable material.
01
Specification Compliance
We match Inconel 718 square bar to your ASTM B637 or AMS condition and finish.
02
Quality and Traceability
Specifically, every Inconel 718 square bar batch ships with EN 10204 3.1 certificates and heat numbers.
03
Flexible Supply
In addition, we cut Inconel 718 square bar to custom sizes, lengths and packing.
04
Responsive Service
As a result, our team confirms Inconel 718 square 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 square bar to your ordered ASTM B637 condition. We control and document each Inconel 718 square bar stage with full heat-number traceability.
01
Raw Material Selection
We weigh nickel, chromium, iron and niobium to make Inconel 718 square bar meet UNS N07718 chemistry.
02
Vacuum Induction Melting
First, we melt the Inconel 718 square bar charge under vacuum to limit gas pickup.
03
ESR or VAR Remelting
Next, ESR or VAR refines the electrode for Inconel 718 square bar to cut inclusions where specified.
04
Hot Forging and Rolling
Then, we forge and hot roll the ingot into Inconel 718 square bar with controlled working.
05
Solution Treatment
After that, we solution treat Inconel 718 square bar near 940–1010 °C to prepare the structure for aging.
06
Double Aging
Subsequently, a two-step age near 718 °C and 621 °C develops the characteristic strength of Inconel 718 square bar.
07
Dimensional and Surface Checks
We verify Inconel 718 square bar size, straightness and surface before release.
08
Final Inspection and MTR
Finally, we confirm Inconel 718 square bar chemistry and properties, then issue the MTR.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Specifically, Southerly Alloy supplies Inconel 718 square bar across the common ASTM B637 forms and conditions. We confirm square bar size, length, straightness and finish against your order. Moreover, square bar is one section in our Inconel 718 bar and rod program.
20,000+ m²
Factory Area
Specifically, modern production facilities for Inconel 718 square bar and dedicated workshops.
50+
Production Machines
Advanced equipment for Inconel 718 square bar manufacturing.
600 Tons
Monthly Capacity
Inconel 718 square bar output across standard and custom sizes.
30+
Technical Engineers
Experienced engineers for Inconel 718 square bar specification support.
30+ Countries
Export Reach
In addition, reliable logistics for Inconel 718 square bar with full documentation.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Every Inconel 718 square bar batch passes inspection before release. In addition, we check Inconel 718 square bar chemistry, mechanical properties, dimensions and surface under our ISO 9001 system.
01
Material Verification
We confirm Inconel 718 square bar grade and heat against your purchase order.
02
Dimensional Inspection
Specifically, we measure square 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 square bar specification requires.
04
Certification and Traceability
Every Inconel 718 square bar delivery includes EN 10204 3.1 certificates with heat numbers.
PRODUCT FORMS
Available Product Forms
Inconel 718 square bar comes in several conditions and variants for different machining and service needs. Specifically, the list below shows the common Inconel 718 Square Bar forms we supply.
02
Bright Square Bar
Bright-finished square bar with clean faces and edges.
Request Availability →
03
Peeled Square Bar
Peeled square bar with controlled faces ready for Inconel 718 machining.
Request Availability →
04
Precision Square Bar
Tight-tolerance square bar for turned and machined Inconel 718 components.
Request Availability →
05
Ground Square Bar
Ground square bar with close dimensional control for Inconel 718 parts.
Request Availability →
06
Forged Square Bar
Forged square bar with a refined grain for heavy-duty Inconel 718 service.
Request Availability →
07
Custom Square Bar
Custom square bar cut to your Inconel 718 drawing and order quantity.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Buyers specify Inconel 718 square bar wherever parts need very high strength under heat, cold or cyclic load. Specifically, the applications below show typical Inconel 718 Square Bar uses.
Discuss Your Application →
01
Aerospace Tooling
Inconel 718 square bar builds jigs and fixtures for hot forming.
02
High-Strength Supports
Square bar frames equipment carrying heavy static loads.
03
Gas Turbine Fixtures
Square bar holds turbine parts through heat-treatment cycles.
04
Fastener Blanks
We machine square bar into square nuts and special Inconel 718 fastener blanks.
05
Oil and Gas Tooling
Square bar builds subsea tool bodies needing aged strength.
06
Cryogenic Fixtures
Square bar keeps toughness in low-temperature handling gear.
07
Power Generation
Square bar supports turbine attachments and grid hardware.
08
Machining Blanks
Square bar gives CNC components an aged, stable start.
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 square bar is quoted to the same window. Therefore, niobium and titanium are the elements that age-harden this square bar.
Consequently, the full composition table on the Inconel 718 material page lists every element against its ASTM B637 limit for this square 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 square 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 square bar. Moreover, design work on this square 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 square bar.
Heat Treatment
Precipitation hardening is what separates Inconel 718 square bar from solid-solution alloys. We supply the square 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 square bar, issued by ASTM International. Moreover, ASME SB637 covers pressure equipment built from this square 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 square bar.
Dimensions
Therefore, Inconel 718 square 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 |
|---|---|---|
| Square Bar | 12–100 mm | Single Random, Double Random or Custom |
| Cold-Drawn Square Bar | 12–80 mm | Custom |
| Bright Square Bar | 12–100 mm | Single Random, Double Random or Custom |
| Peeled Square Bar | 20–100 mm | Custom |
| Precision Square Bar | 12–60 mm | Custom |
| Ground Square Bar | 12–80 mm | Custom |
| Forged Square Bar | 100–300 mm | Custom |
| Custom Square Bar | To drawing | Custom |
Available square bar dimensions depend on the manufacturing route, standard, material condition and order quantity. Please confirm your required square bar size, section and length in the inquiry.
Surface Finishes
Therefore, the surface condition decides how this square bar machines and how closely it holds size on a finishing cell. Specifically, we agree the finish on this Inconel 718 square bar with your order.
| Surface Condition | Typical Use |
|---|---|
| Cold Drawn | Tighter diameter and finish on this square bar, with cold work lifting strength. |
| Peeled | Uniform diameter on this square bar with a machined skin. |
| Polished | Reduced roughness on this square bar for sealing and product-contact use. |
Meanwhile, the surface finishes table on the Inconel 718 material page lists the remaining conditions we quote for this square bar.
Related forms from the same heat cover Inconel 718 Flat Bar, Inconel 718 Hex Bar and Inconel 718 Rectangle Bar when your square 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 square bar, our process keeps you informed at every stage. Therefore, most Inconel 718 square bar orders move from inquiry to shipment in under three weeks.
1
Send Your Inquiry
Send your Inconel 718 square bar grade, size, length, quantity and standard.
2
Confirm the Specification
State ASTM B637 or AMS with the Inconel 718 square bar condition and finish you need.
3
Review the Quotation
Receive pricing for Inconel 718 square bar by dimension, quantity and destination.
4
Confirm the Order
Approve the Inconel 718 square bar technical spec, terms and schedule.
5
Production and Inspection
We make and inspect your Inconel 718 square bar to the agreed specification.
6
Shipment and Documentation
Receive Inconel 718 square 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 Square Bar?
ASTM B637 and ASME SB637 cover Inconel 718 square bar; SAE AMS 5662/5663 serve aerospace.
How is the price of Inconel 718 square bar calculated?
Mainly by weight for Inconel 718 square bar with the prevailing nickel surcharge.
Can Inconel 718 square bar be welded?
Yes. We weld Inconel 718 square bar in the solution-treated condition and age the weldment afterwards where needed.
Is Inconel 718 square bar hard to machine?
We rough-machine Inconel 718 square bar in the solution-treated state, then age it to final strength.
What heat treatment does Inconel 718 square bar need?
Solution treating near 960 °C plus the double age develops full strength in Inconel 718 square bar.
What applications use Inconel 718 square bar?
Inconel 718 square bar serves aerospace fasteners, gas turbine parts, downhole tools and cryogenic equipment.
What is your MOQ for Inconel 718 square bar?
One piece for many common Inconel 718 square bar sizes.
What are your trade terms for Inconel 718 square bar?
Mainly FOB for Inconel 718 square bar; EXW and CIF also available.
What is the lead time for Inconel 718 square bar?
Stock Inconel 718 square 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 square bar?
Yes. Every Inconel 718 square bar delivery includes 3.1; 3.2 with third-party endorsement on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Inconel 718 square bar from Southerly Alloy covers standard and custom sizes to ASTM B637. Send your Inconel 718 square bar grade, dimensions, quantity and delivery needs to receive a quotation.
Specifically, our team reviews your Inconel 718 square bar specification, confirms the condition and finish, and returns pricing with clear Incoterms. We then produce and inspect your Inconel 718 square bar before shipping it with full export documentation.
