Incoloy® 925 (UNS N09925)
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Incoloy
Incoloy Alloys—High-Temperature Corrosion-Resistant Nickel-Iron Alloys
Incoloy alloys provide outstanding corrosion resistance, high-temperature strength, and long-term durability, making them a preferred choice for demanding applications in petrochemical, power generation, aerospace, marine, and industrial engineering sectors worldwide.
What Is Incoloy?
Incoloy® is a family of nickel-iron-chromium-based superalloys manufactured by Special Metals Corporation. Unlike Inconel, which is optimized for oxidation and strength at ultra-high heat, Incoloy offers a balance between:
- High strength at elevated temperatures
- Outstanding resistance to sulfuric and phosphoric acid
- Stress-corrosion and pitting resistance in seawater and chlorides
- Excellent structural stability under thermal cycling
Most Popular Incoloy Grades:
- Incoloy 800 / 800H / 800HT – High strength + oxidation resistance
- Incoloy 825 – Corrosion resistant in reducing and oxidizing acid
- Incoloy 925 / 945 / A286 – High strength and corrosion resistance, often used in oil & gas
Incoloy 800H
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Incoloy 25-6Mo Plate
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Optional Incoloy Alloy Specifications
| Property | Details |
|---|---|
| Product Forms | Seamless pipe, plate, bar, forging, strip, tube, wire |
| Grades Available | Incoloy 800H, 800HT, 825, 925, A286, 903 |
| Standards | ASTM B163/B407/B409/B514/B564, DIN 1.4876, 1.4958, 2.4858 |
| Plate Thickness | 1mm – 100mm |
| Bar Diameter | Ø6mm – 300mm |
| Pipe Sizes | 1/2” – 20” NPS / SCH 10 – XXS |
| Finish | Annealed, polished, pickled, cold drawn, ground |
Inconel Alloy Applications
- Heat exchangers and condensers
- Waste incinerators & thermal oxidizers
- Fertilizer and acid manufacturing plants
- Power station superheater tubes
- Pickling line components
- Flue gas desulfurization (FGD) and scrubbers
- Nuclear fuel reprocessing & chemical waste vessels
Why Buy From mailongmetals?
- Full stock of Incoloy 800/825 pipe, sheet, bar & wire
- Cut-to-length, threading, CNC machining service
- Weldability guidance + filler suggestions (e.g., ERNiCrMo-3)
- Precision forging + solution annealing available
- Corrosion simulation & technical support
- Global supply network with fast dispatch
1. What are Incoloy alloys? −
Incoloy alloys are high-performance nickel–iron–chromium alloys designed for excellent corrosion resistance, high-temperature strength, and long-term durability in harsh industrial environments.
2. What industries commonly use Incoloy alloys? +
They are widely used in petrochemical plants, heat-treatment equipment, offshore oil and gas systems, power generation, aerospace components, and marine engineering.
3. How are Incoloy alloys different from Inconel alloys? +
Incoloy contains more iron, making it more cost-effective for high-temperature and corrosion-resistant applications, while Inconel provides higher strength at extreme temperatures.
4. What are the most popular grades of Incoloy? +
Common grades include Incoloy 800, 800H, 800HT, 825, 901, and 925, each offering specific resistance to oxidation, acids, stress corrosion, and elevated temperatures.
5. Can Incoloy alloys withstand high temperatures? +
Yes. Grades like Incoloy 800H/800HT perform exceptionally well between 600–1100°C, offering excellent structural stability and oxidation resistance.
6. Are Incoloy alloys resistant to acid corrosion? +
Incoloy 825 and 925 are specifically designed for resistance to sulfuric acid, phosphoric acid, seawater, and chloride-related corrosion.
7. What product forms are available for Incoloy alloys? +
They are available in plates, sheets, coils, bars, rods, wires, tubes, fittings, and customized machined parts.
8. Can Incoloy alloys be welded easily? +
Yes. Incoloy alloys generally have good weldability using TIG, MIG, or SMAW methods, though proper pre-cleaning and heat control are recommended.
9. Do Incoloy alloys require special heat treatment? +
Some grades require solution annealing or stabilization treatments to achieve optimal mechanical properties and corrosion resistance.
10. How do I select the right Incoloy grade for my project? +
Selection depends on operating temperature, chemical environment, mechanical load, and required corrosion resistance. Providing your application details helps engineers recommend the best grade.
Whether You're Building A Heat Exchanger, Chemical Reactor, Or Marine Component, XuRui Offers Top-Quality Incoloy Materials With Full Certification And Global Delivery.