BS EN ISO 9400:1996 - Nickel-based alloys. Determination of resistance to intergranular corrosion
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BS EN ISO 9400:1996 is a European Standard based on an International Organization for Standardization (ISO) standard. It focuses on nickel-based alloys and outlines a method for determining the resistance of these alloys to intergranular corrosion. Let's break down what this standard entails:
Nickel-Based Alloys: Nickel-based alloys are a group of materials that primarily consist of nickel as the major component, with various other elements added to achieve specific properties. These alloys are known for their exceptional corrosion resistance, high-temperature strength, and excellent performance in harsh environments. They are commonly used in industries such as aerospace, chemical processing, and marine engineering.
Intergranular Corrosion: Intergranular corrosion is a type of corrosion that occurs along the grain boundaries of a material. In nickel-based alloys, which are often used in critical applications, maintaining resistance to intergranular corrosion is crucial to ensuring the longevity and reliability of components made from these materials.
Determination of Resistance: The standard specifies a method for determining the resistance of nickel-based alloys to intergranular corrosion. This method typically involves subjecting samples of the alloy to specific test conditions, such as exposure to a corrosive environment at elevated temperatures, and then evaluating the extent of corrosion along grain boundaries.
Quality Control: The determination of resistance to intergranular corrosion is an important quality control measure for manufacturers of nickel-based alloy products. It helps ensure that the alloys meet the required corrosion resistance standards for their intended applications.
