Inconel 600 Bar and Inconel 625 Round Bar
Inconel 600 Bar and Inconel 625 Round Bar
Both Inconel 600 bar and Inconel 625 round bar are high-strength nickel-chromium superalloys with excellent corrosion and high-temperature resistance. However, Inconel 625 alloy bar offers greater strength due to its higher chromium content and the addition of molybdenum. It also offers resistance to pitting, crevice, and seawater corrosion, making it more suitable for more severe and demanding applications. Inconel 600 round bar is a more cost-effective option with good resistance to general corrosion, high temperatures, and certain corrosive media (such as chloride ions).
What is the difference between Inconel 600 and 625?
Inconel 625 alloy has a higher chromium content than Inconel 600 alloy. Chromium content is the primary determinant of an alloy's oxidation resistance. Therefore, Inconel 625 has better oxidation resistance than Inconel 600.
Mechanical Properties of Inconel 600 Bars
| Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
|---|---|---|
| Psi – 45,000 , MPa – 310 | Psi – 95,000 , MPa – 655 | 40 % |
Nickel Alloy 600 Rod Physical Properties
| Density | 0.305 | lb/in³ |
|---|---|---|
| 8.44 | Mg/m³ | |
| Specific Heat | 0.106 | Btu/lb°F (J/kg°C) |
| 444 | J/kg-°C | |
| Melting Range | 2470-2575 | °F |
| 1354-1413 | °C | |
| Electrical Resistivity | 620 | ohm-circ mil/ft |
| 1.03 | μΩ-m | |
| Curie Temperature | -192 | °F |
| -124 | °C | |
| Permeability | 1.01 | 200 oersted (15.9 kA/m) |
Chemical Composition of Alloy 625 Rods
| Grade | Ni | Cr | Fe | C | Mn | Si | Mo | Co | Al | Ti | Nb + Ta | P | S |
| Inconel 625 | 58.0 min | 20.0 – 23.0 | 5.0 max | 0.10 max | 0.50 max | 0.50 max | 8.0 – 10.0 | 1.0 max | 0.40 max | 0.40 max | 3.15 – 4.15 | 0.015 max | 0.015 max |
Mechanical Properties of Inconel 625 Bars
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.4 g/cm3 | 1350 °C (2460 °F) | Psi – 135,000 , MPa – 930 | Psi – 75,000 , MPa – 517 | 42.5 % |
Inconel 600 Round Bar
Key Properties: Excellent mechanical properties, good weldability, resistance to high temperatures and a wide range of corrosive media, including resistance to chloride-ion stress corrosion cracking. Non-magnetic.
Best Uses: Applications requiring good corrosion and heat resistance at a low cost.
Inconel 625 Round Bar
Key Properties: High strength, excellent resistance to a wide range of corrosive media, including seawater, and strong resistance to chloride pitting and crevice corrosion.
Best Uses: Severe, high-strength applications where extreme temperature performance and excellent corrosion resistance are critical.
Composition: Nickel-chromium-molybdenum alloy. The higher chromium content provides improved oxidation resistance.
Key Differences Overview
Strength: Compared to Inconel 600 round bar, Inconel 625 bar offers higher strength and improved high-temperature performance.
Corrosion Resistance: Due to its higher chromium and molybdenum contents, Inconel 625 round bar offers superior resistance to seawater corrosion, pitting, and crevice corrosion.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.
