01
Hot-Rolled Plate (ASTM B670)
Aged Inconel 718 plate from 4.8 mm upward for structural and equipment duty.
Request Availability →Inconel 718 Plate and Sheet — ASTM B670
UNS N07718 plate, sheet, and strip to ASTM B670, delivered aged for high-strength aerospace and industrial service.
Full Flat-Rolled Range
Strip, sheet, and heavy plate quoted under one ASTM B670 inquiry, cut to your width and length.
Aged Strength Standard
Deliveries ship precipitation hardened toward 1241 MPa (180 ksi) tensile as the default condition.
Flatness and Finish Control
Cold-rolled and hot-rolled routes are matched to thickness and downstream fabrication needs.
PRODUCT OVERVIEW
About Inconel 718 Plate and Sheet
Inconel 718 plate and sheet are supplied in UNS N07718 / Werkstoff 2.4668, a precipitation-hardenable flat-rolled product. Flat product runs to ASTM B670, and aerospace gauges follow AMS 5596 or 5597. Duty spans thrust-reverser structures, brackets, and chemical equipment from cryogenic temperatures to 650 °C. Buyers normally arrive here choosing between forming-friendly solution-treated sheet and fully aged plate for direct service. The full chemistry, standards, and aging logic sit on the Inconel 718 material page, while bar and rod, pipe and tube supply are covered on their own form pages.
PRODUCT FEATURES
Key Features of Inconel 718 Plate and Sheet
Southerly Alloy supplies UNS N07718 plate, sheet, and strip to ASTM B670 in the precipitation-hardened condition, with aerospace sheet to AMS 5596 and 5597 available against drawing. Thickness runs from thin strip to heavy plate, cut to length and width. EN 10204 3.1 certificates and full heat traceability accompany every delivery.
Inconel 718
High Strength After Aging
Aged plate reaches 1241 MPa (180 ksi) minimum tensile under ASTM B670.
01
Weldability Before Aging
The slow aging response lets fabricators weld and form first, then age the finished part.
02
Cryogenic Through 650 °C Service
Properties hold from liquefied-gas temperatures into hot-section duty.
03
Oxidation Resistance
Chromium keeps scaling resistance toward 980 °C for non-load-bearing exposure.
04
Condition Choice
Solution-treated sheet supports deep forming; aged plate serves finished strength.
05
Flatness and Tolerance
The cold-rolled route maintains tight thickness tolerance for machined components.
06
Full Heat Traceability
Every sheet and plate carries heat-number documentation back to the melt.
07
WHY CHOOSE US
Why Choose Inconel 718
Ordering flat-rolled product through Southerly Alloy puts condition and thickness before the quotation. Standard, gauge, and condition are confirmed against your fabrication plan first. After that, production runs with the partner plant responsible for melting and rolling, and the certificate names the producing heat.
01
Fabrication-First Review
Forming depth and service load decide solution-treated versus aged before price does.
02
Mill-Linked Traceability
Every plate carries heat-number documentation back through the producing plant.
03
Cut-to-Size Service
Blanks are sheared, plasma-cut, or sawn to the dimensions your job needs.
04
Project-Ready Export
Packing, interleaving, and shipping paperwork are prepared for site delivery schedules.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Flat-rolled 718 follows two rolling routes, and the aging step near the end decides the delivered condition. Above all, annealed stock is never substituted with aged plate when the order calls for formability.
01
Ingot and Slab Preparation
Melted UNS N07718 is cast and hot-conditioned into slabs meeting the chemistry window.
02
Hot Rolling
Slabs pass through hot rolling to plate thickness with controlled reduction and temperature.
03
Cold Rolling
Sheet and strip gauges are cold rolled with intermediate anneals for tolerance and finish.
04
Solution Treatment
Product is annealed near 940–1010 °C and cooled to set up the aging response.
05
Double Aging
Two timed holds near 718 °C and 621 °C grow the Ni₃Nb phase that carries the strength.
06
Leveling and Finishing
Pickling, leveling, and cutting deliver the specified flatness, edge, and size.
07
Final Testing
Tensile, hardness, and dimensional results are reviewed before certificates are issued.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Inconel 718 sheet and plate supply covers thin-gauge aerospace sheet, standard industrial plate, and strip in coil. Also, solution-treated and aged products are both stocked. Finally, width, length, and flatness are confirmed against the purchase order before production is scheduled.
20,000+ m²
Production Area
Partner workshops for hot rolling, cold rolling, aging, and finishing under coordinated scheduling.
50+
Processing Machines
Rolling, leveling, shearing, and heat-treatment equipment across the flat-rolled routes.
600 Tons
Monthly Output
Rolled nickel alloy plate and sheet across standard and custom sizes.
30+
Technical Engineers
Condition, fabrication, and inspection support from inquiry to release.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Every Inconel 718 sheet and plate lot is released against the ordered standard. Chemistry, mechanicals, hardness, dimensions, and surface condition are checked under the ISO 9001 quality system. EN 10204 3.1 documentation is standard, with third-party review records compiled where the project requires them.
01
Chemical Analysis
Spectrometer results are checked against the UNS N07718 window before any plate is cut.
02
Mechanical Testing
Tensile, yield, elongation, and hardness confirm the ordered condition and thickness band.
03
Dimensional Inspection
Thickness, flatness, and edge condition are measured against the agreed tolerances.
04
Documentation
EN 10204 3.1 mill test certificates with heat traceability ship with every order.
PRODUCT FORMS
Available Product Forms
Inconel 718 flat-rolled supply is split by rolling route, and each route carries its own specification and gauge window.
02
Cold-Rolled Sheet (ASTM B670)
Precision Inconel 718 sheet for formed brackets and ducting.
Request Availability →
03
Strip and Coil
Narrow-width product for stamping, rolling, and continuous fabrication.
Request Availability →
04
Aerospace Sheet (AMS 5596 / 5597)
Condition-specific Inconel 718 sheet for airframe and engine components.
Request Availability →
05
Cut-to-Size Blanks
Sheared or sawn pieces prepared against customer drawings.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Flat-rolled duty is where aged strength, weldability, and corrosion resistance meet forming and machining at once. Therefore, gauge and condition carry the design. The applications below account for most inquiries.
Discuss Your Application →
01
Thrust-Reverser and Exhaust Structures
Sheet and plate in engine nacelle components near hot-gas paths.
02
Turbine Casings and Mounting Rings
Aged plate carrying load at elevated temperature.
03
Chemical Processing Equipment
Vessels, internals, and baffles where chloride media meet high strength.
04
Pollution-Control Systems
Scrubber components resisting wet acidic gas with mechanical load.
05
Cryogenic Equipment
Liquefied-gas hardware where toughness must survive −253 °C.
06
High-Strength Fastener Stock
Blank material for machined bolts and studs in aged condition.
07
Nuclear and Power Components
Core-adjacent hardware and clamping structures with rigorous documentation.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The chemistry window below is common to B670 flat-rolled product and the aerospace AMS sheet specifications for UNS N07718. However, the governing purchase specification takes precedence for 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% max. |
| Carbon (C) | 0.08% max. |
| Manganese (Mn) | 0.35% max. |
| Silicon (Si) | 0.35% max. |
| Copper (Cu) | 0.30% max. |
| Phosphorus (P) | 0.015% max. |
| Sulfur (S) | 0.015% max. |
| Boron (B) | 0.006% max. |
Mechanical Properties
Minimum room-temperature values below apply to precipitation-hardened flat-rolled product, because aging develops the full strength of the grade. Thickness bands follow the governing standard.
| Product Form | Standard | Condition | Tensile Strength | Yield Strength, 0.2% Offset | Elongation |
|---|---|---|---|---|---|
| Plate, sheet, and strip up to 25.4 mm | ASTM B670 | Solution treated + aged | ≥1241 MPa (180 ksi) | ≥1034 MPa (150 ksi) | ≥12% |
| Plate over 25.4 to 57.2 mm | ASTM B670 | Solution treated + aged | ≥1241 MPa (180 ksi) | ≥1034 MPa (150 ksi) | ≥10% |
| Seamless pipe and tube (reference) | ASTM B983 | Solution annealed + precipitation hardened | ≥1034 MPa (150 ksi) | ≥862 MPa (125 ksi) | ≥20% |
Aerospace AMS 5596 and AMS 5597 deliveries carry condition-specific minimums and extra process controls. Confirm the required condition at inquiry so the correct standard is quoted.
Physical Properties
| Property | Value |
|---|---|
| Alloy | Inconel 718 |
| UNS | N07718 |
| Werkstoff | 2.4668 |
| Density | Approx. 8.19 g/cm³ |
| Melting Range | Approx. 1260–1336°C |
| Elastic Modulus | Approx. 200 GPa |
| Thermal Conductivity | Approx. 11.4 W/m·°C at 20 °C |
| Specific Heat | Approx. 435 J/kg·°C |
| Expansion Coefficient | 13.0 µm/m·°C (20–100 °C) |
| Typical Aged Hardness | 36–44 HRC |
| Alloy Type | Nickel-chromium-iron |
Standards
| Standard | Product / Application |
|---|---|
| ASTM B670 | Plate, sheet, and strip for elevated-temperature service |
| ASTM B906 | General requirements for flat-rolled product |
| ASTM B637 | Bar and forging stock reference for matched hardware |
| ASME SB670 | Counterpart for boiler and pressure-code work |
| SAE AMS 5596 | Sheet, strip, and plate, solution treated and aged |
| SAE AMS 5597 | Sheet, strip, and plate, precipitation hardened |
| DIN 17750 | Nickel alloy flat-rolled standard, W.Nr. 2.4668 |
| NACE MR0175 / ISO 15156 | Sour-service qualification (cited for reference) |
ASTM publishes the governing documents at ASTM International, and the ASME counterpart applies once the equipment falls under code jurisdiction. Additionally, sour-service qualification should be verified against the current NACE MR0175 / ISO 15156 edition for each project.
Dimensions
| Product Form | Typical Supply Range | Length |
|---|---|---|
| Hot-rolled plate | 4.8–57.2 mm thick | Cut to length and width |
| Cold-rolled sheet | 0.25–6.4 mm thick | Cut to length and width |
| Strip and coil | 0.13–6.4 mm thick, coil form | Coil or custom lengths |
| Cut blanks | Any stocked gauge | To customer drawing |
Sizes outside the listed windows are quoted against slab and coil availability. Therefore, state thickness, width, length, condition, and edge finish in the inquiry for an accurate route and price.
Surface Finishes
| Surface Condition | Typical Characteristics / Applications |
|---|---|
| Solution Annealed & Pickled | Standard delivered condition for forming stock |
| Aged & Pickled | Final high-strength condition after double aging |
| Bright Annealed | Smooth, scale-free surface for visible and clean service |
| Mill Finish | As-rolled surface for machining and further fabrication |
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
Most flat-rolled inquiries move from condition review to shipment in two to four weeks. However, heavy plate and aged-condition product sits at the longer end. The steps below keep the standard and condition aligned with your fabrication plan before price is fixed.
1
Send Your Inquiry
State thickness, width, length, quantity, condition, and the equipment the material serves.
2
Select the Standard
ASTM B670 for industrial plate and sheet, or AMS 5596/5597 for aerospace gauges.
3
Confirm the Condition
Solution-treated sheet for forming and welding, or aged plate for direct service.
4
Review the Quotation
Pricing reflects route, aging scope, cutting, documentation, and Incoterm.
5
Production and Inspection
The order is rolled, heat-treated, and inspected to the agreed tolerances.
6
Shipment and Documentation
Delivery departs with 3.1 certificates and full export paperwork.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The aged B670 plate for our turbine mounts arrived flat, heat-marked, and with hardness records our reviewer accepted on the spot.”
★★★★★
“Cold-rolled sheet held the gauge tolerance across every bundle, and the certificates were ready at collection.”
★★★★★
“Cut-to-size blanks for our scrubber retrofit matched the drawing dimensions plate by plate, documented heat by heat.”
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 standard governs Inconel 718 sheet and plate?
ASTM B670 covers plate, sheet, and strip for elevated-temperature service, with ASTM B906 general requirements behind it. Aerospace gauges normally order to AMS 5596 or AMS 5597 instead.
Should Inconel 718 sheet be bought aged or solution-treated?
Solution-treated sheet suits deep forming, welding, and subsequent heat treatment. Aged plate carries the full 1241 MPa (180 ksi) class tensile and goes straight into service.
Is Inconel 718 plate weldable?
Yes. The slow aging response limits strain-age cracking, so fabricators weld in the solution-treated condition with ERNiFeCr-2 filler and age the finished part afterward.
How is Inconel 718 plate priced?
Inconel 718 plate is priced by weight (kg). Quotations therefore reflect the nickel surcharge, thickness and size, manufacturing route, cutting scope, quantity, and required delivery terms, and the applicable Incoterm appears on every offer.
What is your MOQ for Inconel 718 sheet?
Single-sheet orders are available for stocked gauges and widths.
What are your trade terms for Inconel 718 sheet?
FOB is quoted as standard, with EXW, CIF, and DAP available against confirmed destinations.
What is the lead time for Inconel 718 sheet and plate?
Stocked gauges ship in 7-15 days. Meanwhile, heavy plate and aged-condition product is scheduled against mill availability.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes — 3.1 mill test certificates are standard on every delivery. Moreover, 3.2 certification with third-party endorsement can be arranged on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the thickness, width, length, standard, condition, and quantity. You receive a quotation showing route, cutting scope, Incoterm, and lead time. Additionally, fabrication details such as forming depth can be attached for condition confirmation.
