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Inconel 601 Screw
QS Fastener: Inconel 601 Screw
Name: Inconel 601 Screw
Material: W.Nr.2.4851
Size: M36
Length: 30-1000 mm
Product Grade: A
Standard: ANSI, NF, DIN
Strength of Extension: 650 N/mm²
Feature: Excellent Oxidation Resistance at High Temperatures
Application: For Thermal Treatment Plant
Material: W.Nr.2.4851
Size: M36
Length: 30-1000 mm
Product Grade: A
Standard: ANSI, NF, DIN
Strength of Extension: 650 N/mm²
Feature: Excellent Oxidation Resistance at High Temperatures
Application: For Thermal Treatment Plant
Quantity
Inconel 601 Screw is manufactured from premium W.Nr.2.4851 nickel-based alloy, compliant with international standards such as ANSI, NF, and DIN. The product is Grade A, with a size of M36, and lengths customizable from 30 mm to 1000 mm as per requirements. It boasts a tensile strength of up to 650 N/mm². Renowned for its exceptional high-temperature oxidation resistance, this product maintains excellent stability and durability in extreme high-temperature environments, making it particularly suitable for high-temperature applications such as heat treatment equipment. Inconel 601 Screw not only exhibits outstanding mechanical properties but also effectively resists oxidation and corrosion, ensuring long-term reliable operation of equipment in high-temperature environments.
1. Oxidation Mechanism
The oxidation resistance of Inconel 601 Screw is primarily attributed to its chemical composition and microstructure:
- High Chromium Content (21-25%): Chromium reacts with oxygen at high temperatures to form a dense chromium oxide (Cr₂O₃) protective layer, preventing further oxygen penetration into the base material.
The oxidation resistance of Inconel 601 Screw is primarily attributed to its chemical composition and microstructure:
- High Chromium Content (21-25%): Chromium reacts with oxygen at high temperatures to form a dense chromium oxide (Cr₂O₃) protective layer, preventing further oxygen penetration into the base material.
- Aluminum Content (1.0-1.7%): Aluminum forms an aluminum oxide (Al₂O₃) layer at high temperatures, further enhancing oxidation resistance, especially in environments above 800°C.
- High Nickel Content (58-63%): The nickel matrix provides a stable high-temperature structure, reducing the risk of oxidation layer spalling and cracking.
2. Experimental Data
Below are the experimental data on the oxidation rate of Inconel 601 Screw at different temperatures:
Oxidation Rate: Below 1000°C, the oxidation rate of Inconel 601 Screw is extremely low, typically less than 0.2 mg/cm²·h, making it suitable for long-term high-temperature use.
Below are the experimental data on the oxidation rate of Inconel 601 Screw at different temperatures:
Oxidation Rate: Below 1000°C, the oxidation rate of Inconel 601 Screw is extremely low, typically less than 0.2 mg/cm²·h, making it suitable for long-term high-temperature use.
Oxidation Layer Thickness: As the temperature increases, the thickness of the oxidation layer gradually increases, but the layer remains dense and stable.
3. Long-Term High-Temperature Oxidation Performance
Inconel 601 Screw exhibits excellent oxidation performance in long-term high-temperature environments:
1000-Hour Oxidation Test at 1000°C: The oxidation weight gain is only 20-30 mg/cm², with no significant spalling or cracking of the oxidation layer.
Inconel 601 Screw exhibits excellent oxidation performance in long-term high-temperature environments:
1000-Hour Oxidation Test at 1000°C: The oxidation weight gain is only 20-30 mg/cm², with no significant spalling or cracking of the oxidation layer.
5000-Hour Oxidation Test at 800°C: The oxidation weight gain is less than 10 mg/cm², and the oxidation layer remains intact.
4. Influencing Factors
The oxidation resistance of Inconel 601 Screw is influenced by the following factors:
- Temperature: The higher the temperature, the faster the oxidation rate, but it remains low below 1000°C.
The oxidation resistance of Inconel 601 Screw is influenced by the following factors:
- Temperature: The higher the temperature, the faster the oxidation rate, but it remains low below 1000°C.
- Environmental Atmosphere: It performs best in oxidizing atmospheres (e.g., air), but oxidation resistance may decrease in reducing or sulfur-containing atmospheres.
- Surface Condition: The smoother the surface, the more uniform the oxidation layer formation, and the better the oxidation resistance.
5. Comparison with Other Materials
Below is a comparison of the oxidation resistance of Inconel 601 Screw with other high-temperature alloys at 1000°C:
Below is a comparison of the oxidation resistance of Inconel 601 Screw with other high-temperature alloys at 1000°C:
| Material | Oxidation Rate (mg/cm²·h) | Oxidation Layer Type | Long-Term Stability |
| Inconel 601 | ≤ 0.2 | Cr₂O₃ + Al₂O₃ | Excellent |
| Inconel 600 | ≤ 0.5 | Cr₂O₃ | Good |
| Incoloy 800 | ≤ 1.0 | Cr₂O₃ | Moderate |
| 304 Stainless Steel | ≥ 2.0 | Fe₂O₃ | Poor |
6. Oxidation Resistance in Practical Applications
The oxidation resistance of Inconel 601 Screw makes it excel in the following high-temperature applications:
- Gas Turbines: Used in combustion chambers and turbine blade fasteners, long-term exposure to 800-1000°C high-temperature environments.
The oxidation resistance of Inconel 601 Screw makes it excel in the following high-temperature applications:
- Gas Turbines: Used in combustion chambers and turbine blade fasteners, long-term exposure to 800-1000°C high-temperature environments.
- Heat Treatment Equipment: Used in furnace supports and bolts, resisting high-temperature oxidation and thermal cycling.
- Chemical Reactors: Used in high-temperature reactor seals and fasteners, resisting oxidation and corrosion.
Inconel 601 Screw exhibits an extremely low oxidation rate in high-temperature environments below 1000°C, primarily due to the dense oxidation layer formed by its high chromium and aluminum content. Its long-term high-temperature stability and excellent oxidation resistance make it an ideal choice for high-temperature fasteners and structural components. For further information on the performance of Inconel 601 Screw or customized design inquiries, please contact our technical support team.
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