1.Thermal Conductivity and Electrical Resistivity of Inconel 601
The thermal conductivity and electrical resistivity of Inconel 601 are temperature-dependent. Typical values are as follows:
• Thermal Conductivity: At 20°C, it is approximately 15 W/m·K. As temperature increases, the thermal conductivity rises gradually; for example, it reaches about 23 W/m·K at 600°C and 30 W/m·K at 1000°C.
• Electrical Resistivity: At 20°C, the electrical resistivity is typically 1.10 × 10⁻⁶ Ω·m (1100 nΩ·m). The resistivity increases with temperature, reaching around 1.30 × 10⁻⁶ Ω·m at 600°C and 1.40 × 10⁻⁶ Ω·m at 1000°C.
These values are typical for the alloy in the annealed condition and may vary slightly depending on heat treatment and manufacturing processes.
2.Magnetic Properties of Inconel 601
Inconel 601 is non-magnetic in the annealed state. However, like many nickel-based alloys, it may exhibit very slight magnetic susceptibility after cold working due to the formation of certain phases or microstructural changes. This magnetism is generally minimal and often not noticeable in practical applications.
3.Common Surface Defects of Inconel 601
Inconel 601 is produced through processes such as hot rolling, cold rolling, forging, and heat treatment. During these operations, several surface defects may occur:
• Oxidation Scales: Due to its high chromium content, Inconel 601 forms a protective oxide layer, but excessive heating can lead to thick, uneven scales that require descaling.
• Pitting or Corrosion Spots: These can appear if the material is exposed to aggressive environments or improper cleaning.
• Rolling Marks or Striations: These are linear surface imperfections resulting from uneven rolling conditions.
• Grain Boundary Oxidation (GBO): Occurs during high-temperature exposure, leading to visible boundaries on the surface.
• Surface Cracks: Can be caused by excessive stress during forming or insufficient heating before hot working.
• Inclusions or Impurities: Visible as small spots or irregularities, these can originate from the melting or casting process.
• Dents, Scratches, or Gouges: Common handling or machining damages that can affect the surface finish and corrosion resistance.
