What is ISO 5520-5:2018?

ISO 5520-5:2018 is a technical standard that provides guidelines for the classification and designation of cast irons. It defines different types of cast iron based on their mechanical properties, chemical compositions, and microstructures. This standard helps ensure consistent quality and accurate comparison of cast iron materials used in various industries.

Classification of Cast Irons

The classification of cast irons according to ISO 5520-5:2018 is based on their minimum tensile strength, minimum elongation, and hardness. The standard divides cast irons into four classes: FG, FGL, FGS, and FGH. Each class further includes multiple grades that differ in terms of their mechanical properties and intended applications. This classification system facilitates clear communication between manufacturers, suppliers, and end-users regarding the quality and characteristics of cast iron materials.

Designation of Cast Irons

ISO 5520-5:2018 also provides guidelines for the designation of cast iron materials. The designation comprises a series of letters and numbers that represent the properties of the cast iron. For example, the designation FG260 represents a gray iron with a minimum tensile strength of 260 MPa. The designation FGL200 represents a gray iron with lamellar graphite and a minimum tensile strength of 200 MPa. By using a standardized designation system, it becomes easier to identify and select the appropriate cast iron material for specific applications.

Benefits of ISO 5520-5:2018

The adoption of ISO 5520-5:2018 brings several benefits to the industry. Firstly, it ensures consistency in the mechanical properties, chemical compositions, and microstructures of cast iron materials. This enables easy comparison and evaluation of different cast irons. Secondly, the standardized classification and designation system simplify the selection process by providing clear information about the material's properties. This enhances efficiency and reduces the risk of using inappropriate materials. Finally, ISO 5520-5:2018 promotes better communication between manufacturers, suppliers, and end-users, leading to improved quality control and customer satisfaction.