What are the differences between Inconel 600 and 625 Nickel Alloy Sheets?
What are the differences between Inconel 600 and 625 Nickel Alloy Sheets?
Inconel 600 sheet is a basic nickel-chromium alloy used in high-temperature environments, while Inconel 625 sheet is a higher-performance, more complex nickel-chromium-molybdenum alloy with added niobium/molybdenum, significantly improving its strength, corrosion resistance, and chloride resistance, making it particularly suitable for marine/chemical environments. Although, in some cases, Inconel 600 sheet has slightly better high-temperature oxidation resistance. The main difference lies in the higher chromium (20-23%) and molybdenum (8-10%) content in Inconel 625 medium-thick sheets, giving them superior strength and corrosion resistance compared to the lower chromium (14-17%) and molybdenum-free Inconel 600 thin sheets.
What are the applications of Inconel 600?
Inconel 600 is a high-performance nickel-chromium alloy, often used in extreme environments due to its high strength, high temperature resistance, and strong corrosion resistance. It is widely used in chemical processing (fatty acids, sodium sulfide), aerospace (engine components, exhaust systems), nuclear power (reactor components), heat treatment (furnace components, baskets), and marine applications (seawater equipment, hardware). Inconel 600 is particularly suitable for high-temperature, corrosive, and high-purity water environments ranging from low temperatures to above 2000°F.
Quick Comparison of Inconel 600 and Inconel 625 Alloys
| Property | Inconel 600 | Inconel 625 |
|---|---|---|
| Common Name | INCONEL 600 | INCONEL 625 |
| UNS Number | UNS N06600 | UNS N06625 |
| W.Nr. | 2.4816 | 2.4856 |
| Alternative Designation | Grade | Grade |
| Brand | INCONEL® | INCONEL® |
| Material Matrix | Nickel-Iron-Chromium | Nickel-Chromium-Molybdenum-Niobium |
| Alloy Type | Solid Solution Strengthened Alloy | Solid Solution Strengthened Alloy |
| Density | 8.47 g/cm³ | 8.44 g/cm³ |
| Primary Usage | High Temperature | High Temperature |
What is Inconel 600 Plate?
Inconel 600 sheet is a high-performance nickel-chromium-iron alloy (Inconel 600) rolled into sheet metal, renowned for its excellent strength retention at high temperatures (up to approximately 1150°C), superior resistance to oxidation, and resistance to chloride stress corrosion cracking. It is specifically designed for manufacturing equipment linings, structural components, heat exchange parts, and containers that require tolerance to extreme high temperatures and corrosive environments. It is a critical basic material for handling harsh conditions in chemical, nuclear power, heat treatment, and aerospace industries.
| Product: | Nickel Alloy sheet inconel 600 625 nickel alloy plate thickness 3mm |
| Material: | 600,625 Etc. |
| Standard: | ASTM/AISI/DIN/JIS/GB |
| Dimension: | Thickness: 0.2mm~200mm;customizable |
| Length: | 2000mm,2438mm,3000mm,6000,Random Length |
| Surface Finish: | No.1/2B/No.4/4K/6K/8K/HL/Brushed |
| Package: | Standard Export Packing,Or As Per Your Requirement |
| Application: | Furnace components, electromagnetic electrodes, chemical and food processing, nuclear engineering |
What is Inconel 625 Plate?
Inconel 625 sheet is a molybdenum and niobium-reinforced nickel-chromium-based superalloy sheet. Its core value lies in its comprehensive and superior corrosion resistance, resisting pitting corrosion, crevice corrosion, chloride stress corrosion cracking, and oxidizing and reducing acid media, while also possessing excellent high-temperature strength (to approximately 980°C) and creep resistance. It provides reliable solutions for applications such as marine engineering, harsh chemicals, flue gas desulfurization, and aerospace, where sheet metal is required as structural components, containers, or liners in extreme corrosive and high-temperature environments. It is a key material with broader and tougher performance than Inconel 600 sheet.
Chemical Composition Of Nickel 600 Plate & 625 Sheet
| Properties | INCONEL 625 | INCONEL 600 |
|---|---|---|
| Sulfur (S) | 0 to 0.015 | 0 to 0.015 |
| Carbon (C) | 0 to 0.1 | 0 to 0.15 |
| Aluminum (Al) | 0 to 0.4 | - |
| Manganese (Mn) | 0 to 0.5 | 0 to 1.0 |
| Iron (Fe) | 0 to 5.0 | 6.0 to 10 |
| Molybdenum (Mo) | 8.0 to 10 | - |
| Nickel (Ni) | 58 to 68.9 | 72 to 80 |
| Chromium (Cr) | 20 to 23 | 14 to 17 |
| Niobium (Nb) | 3.2 to 4.2 | - |
| Cobalt (Co) | 0 to 1.0 | - |
| Silicon (Si) | 0 to 0.5 | 0 to 0.5 |
| Titanium (Ti) | 0 to 0.4 | - |
| Phosphorus (P) | 0 to 0.015 | - |
| Copper (Cu) | - | 0 to 0.5 |
Inconel Alloy 600 Sheet vs Inconel Alloy 625 Plate Mechanical Properties Comparison
| Property | Inconel Alloy 600 | Inconel Alloy 625 |
|---|---|---|
| Density | 8.47 g/cm³ | 8.4 g/cm³ |
| Melting Point | 1413 °C (2580 °F) | 1350 °C (2460 °F) |
| Tensile Strength | 655 MPa (95,000 psi) | 930 MPa (135,000 psi) |
| Yield Strength (0.2% Offset) | 310 MPa (45,000 psi) | 517 MPa (75,000 psi) |
| Elongation | 40% | 42.5% |
Nickel 600 vs 625 Plate Hardness HRC
| Material | Hardness, Rockwell |
|---|---|
| Alloy 600 Plate | 65-85B |
| Alloy 600 Sheet | 88B max |
| Alloy 625 Sheet | 145-240 |
Inconel Alloy 600 Plate vs Inconel Alloy 625 Plate Applications Comparison
| Category | Alloy 600 Plate Applications | Inconel Alloy 625 Sheet Applications |
|---|---|---|
| Primary Industrial Uses | Retorts, Muffles, Roller hearths, Furnace components, Heat-treating applications | Aerospace, Chemical Processing, Petrochemical Industry, Ship Building, Engineering |
| Infrastructure & Construction | – | Construction, Bridges, General Structural Purposes |
| Heat Transfer & Equipment | Heat-treating applications | Heat Exchangers |
FAQ
Q: What is the density of Alloy 600?
A: Alloy 600 has a density of 8.47 g/cm³, slightly heavier than other alloys such as copper or aluminum, but lighter than special stainless steel or titanium alloys.
Q: Will Alloy 600 rust?
A: Among nickel-based alloys, Alloy 600 is a solid solution strengthened alloy, composed of nickel, chromium, and iron.Notably, it does not exhibit chloride corrosion cracking like stainless steel.
Q: What is the density of Type 625 nickel alloy?
A: Alloy 625 has a density of 8.44 g/cm³, making it slightly heavier than other alloys (such as copper or aluminum alloys), but lighter than special stainless steels or titanium alloys.
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 Inconel 600 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 Inconel 600 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 Inconel 600, 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.
