Difference between Inconel 625 strip and Incoloy 825 strip
Difference between Inconel 625 strip and Incoloy 825 strip
Inconel 625 steel strip has higher tensile strength and nickel content, making it more suitable for high-temperature, high-stress applications such as aerospace and marine environments; while Incoloy 825 steel strip is better suited for environments with high corrosive acid and chloride content, such as chemical processing and oil and gas extraction. The main difference between the two is that Inconel 625 contains higher levels of molybdenum and niobium, thus enhancing its strength and oxidation resistance; while Incoloy 825 contains higher levels of iron, copper, and titanium, thus enhancing its resistance to reducing acids and stress corrosion cracking.
What are the disadvantages of Inconel 625?
Disadvantages: High cost: Due to its complex composition and high production costs, Inconel 625 is significantly more expensive than many other materials. Difficult to process: The toughness of Inconel 625 makes it difficult to process, requiring specialized tools and techniques.
What Is Inconel 625 Strip?
Inconel 625 nickel alloy strip is one of the most widely used nickel-based alloys on the market. In terms of corrosion resistance, strength, and machinability, Inconel 625 nickel alloy strip is one of the best choices for your applications.
Inconel 625 nickel alloy strip, also known as UNS N06625 or W.Nr. 2.4856, refers to a high-strength solid solution with high nickel content, exhibiting excellent corrosion resistance, high tensile strength, high oxidation resistance, and good fatigue resistance.
These properties make Inconel 625 nickel alloy strip ideal for manufacturing chemical equipment, aerospace structural components, and aircraft engine parts.
The density of Inconel 625 nickel alloy strip is 8.44 g/cm³.
What is Incoloy 825 Strip?
Incoloy 825 steel strip is produced by adding molybdenum, copper, and titanium to a nickel-iron-chromium alloy.
Due to its chemical composition, this alloy exhibits extremely high corrosion resistance.
Incoloy 825 steel strip has a wide range of applications thanks to its excellent resistance to general and specific corrosion under various conditions.
Containing molybdenum and copper, Incoloy 825 steel strip is resistant to acid and reducing agent corrosion.
Chromium imparts its resistance to oxidation, including resistance to nitric acid solutions, nitrates, and oxidizing salts.
Incoloy 825 steel strip is particularly resistant to sulfuric acid and phosphoric acid corrosion.
Incoloy 825 steel strip possesses extremely high corrosion resistance. It resists corrosion, pitting, crevice corrosion, and stress cracking under both oxidizing and reducing conditions.
Incoloy 825 is suitable for pressure vessels operating at temperatures up to 525°C.
The mechanical properties of Incoloy 825 steel strip enable it to perform excellently even in harsh environments.
Its microstructure changes when the temperature exceeds 1000°F.
Difference Between Inconel 625 Strip and Incoloy 825 Strip
Chemical Composition
Inconel 625 Alloy Strip Chemical Composition(%) |
||
| Element | Min | Max |
| C | – | 0.1 |
| Si | – | 0.5 |
| Mn | – | 0.5 |
| P | – | 0.015 |
| S | – | 0.015 |
| Al | – | 0.4 |
| Cr | 20 | 23 |
| Cu | 1 | 1.4 |
| Fe | – | 5 |
| Mo | 8 | 10 |
| Nb | 3.15 | 4.15 |
| Ni | Balance | |
| Ti | – | 0.4 |
Incoloy 825 Alloy Strip Chemical Composition(%) |
||||||||||
| Ni | Fe | Cr | Mo | Cu | Ti | C | Mn | S | Si | Al |
| 38.0-46.0 | 22.0 min | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | 0.6-1.2 | 0.05 max | 1.0 max | 0.03 max | 0.5 max | 0.2 max |
Mechanical Properties
Inconel 625 Strip Mechanical Properties
| Temper | Annealed (Grade1) | Solution-treated (Grade 2) | ||
| Tensile Rm | 120 | ksi (min) | 100 | ksi (min) |
| Tensile Rm | 827 | MPa (min) | 690 | MPa (min) |
| R.p. 0.2% Yield | 60 | ksi (min) | 40 | ksi (min) |
| R.p. 0.2% Yield | 414 | MPa (min) | 276 | MPa (min) |
| Elongation | 30 | % (min) | 30 | % (min) |
Incoloy 825 Strip Mechanical Properties
| Tensile Strength, min. | Yield Strength, min. | Elongation, min. | Elastic Modulus | |||
|---|---|---|---|---|---|---|
| Mpa | ksi | Mpa | ksi | % | Gpa | 106psi |
| 690 | 100 | 310 | 45 | 45 | 206 | 29.8 |
Application Areas
Inconel 625 Strip Applications:
Inconel 625 alloy has extremely high corrosion resistance, making it widely used in the oil and gas industry. Alloy 625 is also favored in the aerospace field.
Aerospace
Chemical Processing
Heat Exchangers
Construction
Bridges
Petrochemicals
Shipbuilding
Engineering
General Structural Applications
Incoloy 825 Strip Applications:
The high nickel content of Inconel 825 alloy strip makes it virtually immune to stress corrosion cracking.
In the oil and gas market, its applications include oil and gas extraction pipes, fittings, and accessories for heat exchangers, evaporators, scrubbers, submerged pipelines, and offshore pipelines.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Steel is a supplier of GH4169 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with GH4169 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells GH4169, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
