What is Inconel 625?
Inconel 625 alloy (UNS N06625) is a solid-solution strengthened nickel-based superalloy with molybdenum and niobium as the main strengthening elements. Inconel 625 alloy exhibits excellent tensile properties and fatigue strength in the temperature range of -196 to 980°C, is resistant to salt spray stress corrosion, and is certified to NACE MR-01-75 Level VII. However, prolonged use at 550-700°C can lead to age hardening and a decrease in ductility. It is primarily used in aircraft engine components, aerospace structural components, and chemical equipment manufacturing.
inconel 625 vs hastelloy c276
Inconel 625 offers superior mechanical strength and is better for oxidizing environments (like high-temp air, marine) up to ~1800°F, while Hastelloy C-276 has exceptional resistance to reducing, aggressive chemicals (like hydrochloric acid), pitting, and crevice corrosion, often preferred in chemical processing, even at slightly higher max temperatures (~1900°F).
Inconel 625 Vs stainless steels 304/316
Inconel 625 is a nickel-based high-temperature alloy that can operate stably in highly corrosive or high-temperature environments up to 980 °C; while 304 and 316 are stainless steels, belonging to iron-based austenitic stainless steels, with practical high-temperature limits of approximately 850 °C (304) and approximately 870 °C (316), respectively. Inconel 625 significantly outperforms 304 and 316 stainless steels in environments rich in chlorides, acidic environments, and high-temperature oxidizing environments.
The price of Inconel 625 is $25-45 per kilogram, while 304 stainless steel costs $2.20-3.80/kg, and 316 stainless steel costs $4.50-7.50/kg.
Inconel 625 Alloy Price (per kilogram)
In 2025, the current price of Inconel 625 alloy is between US$25 and US$45 per kilogram. The exact price varies depending on the form (bars, plates, tubes), size, surface treatment, and order quantity. This alloy is a nickel-based superalloy with strong demand in the aerospace, marine, and chemical industries.
| Product Form | Price Range (USD/kg) |
|---|---|
| Plate / Sheet | 45 – 80 USD/kg |
| Pipe / Tube | 50 – 95 USD/kg |
| Bar / Rod | 48 – 85 USD/kg |
Inconel 625 Alloy Price Market Analysis
As of 2025, the price of Inconel 625 is between $25 and $45 per kilogram. The price is highly sensitive to fluctuations in the nickel and molybdenum markets, and geopolitical factors affecting mining and refining in key regions (such as Indonesia, Australia, and Canada) could lead to short-term price spikes. The limited global production capacity of high-grade superalloys results in longer lead times, prompting buyers to sign annual contracts or make bulk purchases to ensure price stability. However, Inconel 625's proven reliability under extreme conditions maintains its strong pricing power and long-term demand growth.
GNEE supplies high-quality Inconel 625 (UNS N06625 alloy) conforming to ASTM B443 (plates/sheets), ASTM B444 (tubes), ASTM B446 (bars), and ASTM B704/B705 standards, complete with EN 10204 3.1 mill test certificates.
We offer plates/sheets with thicknesses of 0.5-50 mm, tubes with outer diameters of 6-610 mm, and bars with diameters up to 350 mm. All products are solution annealed to ensure optimal corrosion resistance and mechanical stability. Optional non-destructive testing (ultrasonic testing, eddy current testing, hydrostatic testing) and third-party inspection are available to guarantee consistent product quality.
With stable monthly supply capacity, custom cutting and processing services, and a 7-15 business day delivery time for standard sizes.
Inconel 625 Specifications
| Item | Specification |
|---|---|
| Alloy | Inconel 625 / UNS N06625 |
| Standards | ASTM B443 (plate/sheet), ASTM B444 (pipe/tube), ASTM B446 (bar), ASTM B704/B705 |
| Forms | Plate, Sheet, Coil, Bar, Pipe, Tube, Wire |
| Thickness (Plate/Sheet) | 0.5 – 50 mm (custom available) |
| Pipe OD | 6 – 610 mm |
| Condition | Annealed / Solution annealed |
| Density | ~8.44 g/cm³ |
| Max Service Temp | ~980°C (oxidizing environments) |
