Description
Alloy Geek N-155 Nickel-Chromium-Cobalt Standard
Alloy N-155, also known as UNS R30155, is a high-temperature nickel-chromium-cobalt alloy that offers excellent strength, oxidation resistance, and high-temperature performance. It is commonly used in aerospace and gas turbine applications where materials need to withstand extreme temperatures and corrosive environments.
The composition of Alloy N-155 typically includes:
- Nickel (about 75-80%)
- Chromium (about 18-21%)
- Cobalt (about 4-6%)
- Molybdenum (about 1.5-2.5%)
- Titanium (about 1-2%)
- Aluminum (about 0.5-1.5%)
- Small amounts of other elements like iron, manganese, silicon, and carbon
Key features and characteristics of Alloy N-155:
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High-Temperature Strength: Alloy N-155 is known for its exceptional strength at elevated temperatures, making it suitable for high-temperature applications in aerospace and gas turbine engines.
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Oxidation Resistance: The alloy exhibits excellent oxidation resistance, which is essential for maintaining its properties in high-temperature, oxidative environments.
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Corrosion Resistance: Alloy N-155 offers good corrosion resistance in various environments, particularly at high temperatures.
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Applications: Alloy N-155 is commonly used in gas turbine engine components, such as turbine blades, combustor cans, and other parts that require high-temperature strength and corrosion resistance.
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Heat Treatment: Alloy N-155 can be heat treated to optimize its properties, often involving processes like solution treatment, precipitation hardening, and aging.
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Forms: Alloy N-155 is available in various forms, including sheets, plates, bars, and forgings.
Due to its combination of high-temperature strength, oxidation resistance, and corrosion resistance, Alloy N-155 is favored in applications where materials need to perform reliably in extreme conditions. If you're considering using Alloy N-155 for a specific project, consulting with materials experts or manufacturers is recommended to ensure it meets your desired performance requirements, especially in terms of its mechanical properties and suitability for your intended application.
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In summary, the main difference between a reference material and a certified reference material lies in the level of characterization, validation, and certification. CRMs have undergone a more comprehensive and rigorous testing process, resulting in certified values and uncertainties that can be confidently used for instrument calibration, quality control, and research. Reference materials, on the other hand, can provide a point of comparison but might not have the same level of certification and traceability as CRMs. When accuracy and traceability are critical, certified reference materials are preferred.