To understand the price, one must understand the metallurgy. Inconel 718 is a nickel-chromium-iron alloy containing significant additions of niobium and molybdenum, along with smaller amounts of aluminum and titanium.
The alloy's primary advantage is its ability to maintain high yield strength and creep-rupture properties at temperatures up to 700°C (1300°F).
Furthermore, unlike many other high-temperature alloys, Inconel 718 exhibits excellent weldability and resistance to post-weld cracking.
Factors That Influence Inconel 718 Plate Pricing
Before presenting the price tables, it is important to understand the key variables that affect the per-kilogram cost of Inconel 718 plates:
- Raw Material Cost: Nickel and chromium prices fluctuate on global commodity markets, directly impacting the base metal cost.
- Plate Thickness: Thicker plates generally have a lower cost per kilogram due to fewer rolling passes, while thin gauge plates require more processing and command a premium.
- Order Quantity: Economies of scale significantly reduce the per‑kg price. Full mill orders typically receive the most favorable rates.
- Processing & Finish: Additional services such as shearing, grinding, polishing, or heat treatment add to the final price.
- Certification & Traceability: Full mill test reports (MTR), third‑party inspection, and compliance with standards like AMS 5596, ASTM B670, or NACE MR0175 may increase costs by 5–15%.
All prices quoted below are for annealed and solution-treated plates with standard mill finish (pickled or descaled), conforming to ASTM B670 / AMS 5596, and include complete material traceability.
Inconel 718 Plate Pricing Schedule
The following tables present per‑kilogram (USD/kg) prices for commonly ordered Inconel 718 plates.
Table 1: Thickness-Based Pricing (Standard Width 48″ / 1219 mm, Length 96″ / 2438 mm)
|
Thickness (mm) |
Thickness (inches) |
Price per kg (USD) |
Typical Application |
|
1.5 – 2.0 |
0.060 – 0.079 |
$95 – $110 |
Shims, seals, precision components |
|
2.5 – 3.0 |
0.098 – 0.118 |
$85 – $98 |
Gaskets, turbine hardware |
|
4.0 – 5.0 |
0.157 – 0.197 |
$78 – $90 |
Rings, flanges, brackets |
|
6.0 – 8.0 |
0.236 – 0.315 |
$72 – $82 |
Structural components, heat shields |
|
10 – 12 |
0.394 – 0.472 |
$68 – $78 |
Pressure vessels, dies |
|
15 – 20 |
0.591 – 0.787 |
$65 – $74 |
Heavy section tooling, support plates |
|
25 – 32 |
0.984 – 1.260 |
$63 – $71 |
Large diameter flanges, high load plates |
|
40 – 50 |
1.575 – 1.969 |
$62 – $70 |
Custom heavy fabrications |
Note: Prices are for solution-annealed condition. Cold rolled or precision ground surfaces add $5–15/kg depending on finish.
Table 2: Pricing by Plate Size (for 12.7 mm / 0.5″ thickness reference)
|
Width × Length (mm) |
Width × Length (inches) |
Typical Weight (kg) |
Price per kg (USD) |
|
600 × 600 |
24 × 24 |
~45 |
$78 – $85 |
|
1000 × 2000 |
40 × 80 |
~200 |
$72 – $78 |
|
1219 × 2438 |
48 × 96 |
~295 |
$68 – $74 |
|
1500 × 3000 |
60 × 120 |
~545 |
$66 – $72 |
|
2000 × 4000 |
78 × 157 |
~970 |
$64 – $70 |
Larger plates (up to 2500 × 6000 mm) are available on a made to order basis; prices are quoted per project.
Table 3: Quantity Discount Scale (for 12.7 mm × 1219 × 2438 mm plates)
|
Order Quantity (kg) |
Discount (%) |
Effective Price per kg (USD) |
|
< 100 |
0% |
$74 – $78 |
|
100 – 499 |
3–5% |
$70 – $75 |
|
500 – 999 |
8–10% |
$66 – $71 |
|
1,000 – 2,499 |
12–15% |
$62 – $68 |
|
≥ 2,500 |
Negotiable |
Contact sales |
Trial quantities (small pieces) are available but subject to cutting charges of $15–$25 per cut plus a minimum order value.
Inconel 718 Plate Standard Dimensions and Their Pricing Impact
Inconel 718 plates are available in a range of standard sizes, and the unit price per kilogram is influenced by the ease of manufacturing and availability:
Small Plates (≤ 10 mm thick, 1,500 x 3,000 mm)
Typically used in thin-wall fabrication, aerospace components, and sheet-based machining.
Price range: $38–$45 per kg.
Higher per-kilogram cost due to cutting, handling, and finishing requirements.
Medium Plates (12–50 mm thick, 1,500 x 3,000 mm or 2,000 x 6,000 mm)
Standard for chemical processing vessels, heat exchangers, and moderate structural components.
Price range: $35–$40 per kg.
Represents optimal balance between cost and material availability.
Heavy Plates (≥ 50 mm thick, 2,000 x 6,000 mm)
Used in high-stress industrial applications such as turbine disks and reactor components.
Price range: $33–$36 per kg.
Slightly lower per-kilogram cost due to production efficiencies in thick plate rolling.
Inconel 718 Plate Advantages
Inconel 718 delivers:
Outstanding high‑temperature strength up to 700°C (1300°F), with excellent creep and rupture properties.
Superior corrosion resistance in both oxidizing and reducing environments, including resistance to chloride stress corrosion cracking.
Good fabricability-it can be welded, machined, and formed in the solution‑annealed condition, then age‑hardened to achieve its full strength.
Wide industry acceptance with specifications covering AMS 5596, 5662, 5663, ASTM B670, and many customer‑specific standards.
When compared to lower‑cost alloys, the long‑term reliability, reduced maintenance, and extended service life of Inconel 718 often result in a lower total cost of ownership.
How to Request a Quote
Because Inconel 718 prices are dynamic and depend on current nickel markets and order specifics, we recommend contacting our sales team with the following information for an accurate quotation:
- Plate thickness, width, and length (or cut‑to‑size drawing)
- Quantity (number of plates or total weight)
- Required material specification (AMS, ASTM, customer standard)
- Desired surface finish and any supplementary testing
- Delivery location and requested lead time
Our product sales managers are available to assist with material selection, cost‑saving alternatives, and pricing.
We Jinie has an extensive inventory of Inconel 718 plates in all standard thicknesses, ready for immediate shipment. For large‑scale projects, we offer competitive mill‑direct pricing.
