Differences between Monel Alloy 400 and Inconel Alloy 600
Differences between Monel Alloy 400 and Inconel Alloy 600
Monel 400 is a nickel-copper alloy primarily used for corrosion resistance in marine and acidic environments, while Incor Nickel 600 is a nickel-chromium alloy designed for high-temperature applications. Monel 400 performs well in resistance to seawater and non-oxidizing acids, while Incor Nickel 600 maintains its strength at high temperatures and resists oxidation and chloride stress corrosion cracking.
Will Inconel 600 rust?
It exhibits excellent resistance to corrosion from high-purity water, and no signs of chloride stress corrosion cracking were detected in the reactor water system. When used in nuclear applications, this alloy is manufactured to stringent specifications and is designated INCONEL 600T alloy.
Monel Alloy 400
Monel nickel-copper alloy 400 (UNS N04400 / W.Nr. 2.4360 and 2.4361) is a solid solution alloy that can only be hardened by cold working. It exhibits high strength and toughness over a wide temperature range and excellent corrosion resistance to a variety of corrosive environments.
Nickel Alloy 600
Nickel (nickel-chromium-iron) alloy 600 (UNS N06600 / W.Nr. 2.4816) is a standard engineering material for applications requiring corrosion and heat resistance. This alloy also possesses excellent mechanical properties, combining high strength with good machinability.
Comparison of chemical composition between Monel Alloy 400 and Inconel Alloy 600
| Element | Alloy 400 | Alloy 600 |
|---|---|---|
| C | ≤ 0.30% | ≤ 0.15% |
| Mn | ≤ 2.00% | ≤ 1.00% |
| Si | ≤ 0.50% | ≤ 0.50% |
| S | ≤ 0.024% | ≤ 0.015% |
| Cu | ≤ 0.50% | - |
| Fe | - | 6.0% - 10.0% |
| Cr | - | 14.0% - 17.0% |
| Ni | ≥ 63.0% | ≥ 72.0% |
Comparison of the purity of Monel Alloy 400 and Inconel Alloy 600
| Element | Monel 400(lose) | Inconel 600(WIN) |
|---|---|---|
| S | ≤ 0.024% | ≤ 0.015% |
| Mn | ≤ 2.00% | ≤ 1.00% |
Compared to Monel 400, Inconel 600 has stricter controls on harmful elements (sulfur and manganese). Sulfur and manganese have a significant negative impact on the alloy's durability and transient performance at high temperatures. Inconel 600 needs to operate at high temperatures, therefore, higher purity is required.
Comparison of corrosion resistance of Monel Alloy 400 and Inconel Alloy 600
| Element | Alloy 400(Seawater Corrosion) | Alloy 600(High-temp Corrosion) |
|---|---|---|
| Ni | ≥ 63.0% | ≥ 72.0% |
| Cu | 28.0% ~ 34.0% | ≤ 0.50% |
| Cr | - | 14.0% ~ 17.0% |
| Monel 400 | Inconel 600 | |
|---|---|---|
| Density, g/cm³ | 8.80 | 8.47 |
| Density, lb/in.³ | 0.318 | 0.306 |
| Melting Range, °F | 2370-2460 | 2470-2575 |
| Melting Range, °C | 1300-1350 | 1354-1413 |
| Curie Temperature, °F | 70-120 | -192 |
| Curie Temperature, °C | 21-49 | -124 |
Main Standards
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 also supplies custom Inconel 600 products in various sizes and specifications. Please send us your drawings for a quote!
