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ASTM B247 is a standard specification for aluminum and aluminum alloy die forgings, hand forgings, and rolled ring forgings, and the following is a detailed interpretation of the standard, especially for aluminum alloy die forgings and hand forgings: 1. Overview of the standard Standard number: ASTM B247 Scope of application: This standard applies to aluminum and aluminum alloy die forgings, manual forgings and rolled ring forgings. It stipulates the requirements for the chemical composition, mechanical properties, size, appearance quality, test methods and other aspects of these forgings. Second, the main requirements chemical composition The ASTM B247 standard details the chemical composition ranges applicable to different alloy series of aluminum and aluminum alloy forgings. These chemical compositions have an important impact on the mechanical properties, corrosion resistance and machinability of forgings. Manufacturers need to ensure that the chemical composition in the forging meets the requirements of the standard. Performance requirements: Forgings need to meet certain mechanical property requirements such as tensile strength, yield strength, and elongation. These requirements are specified according to the type of alloy of the material, the state of heat treatment, and the size of the forging. Test method: The standard specifies the corresponding test method to evaluate the mechanical properties of forgings, such as tensile test, etc. Dimensional requirements: The size specifications of forgings are listed in the standard, including length, width, thickness, etc., to ensure the interchangeability and consistency of forgings. Tolerance range: According to the use and accuracy requirements of the forging, the corresponding tolerance range is given in the standard. Appearance requirements: The surface of the forging should be smooth and clean, no cracks, no porosity, no inclusions and other defects. The color should be uniform and consistent, with no obvious color difference. Inspection method: Evaluate the appearance quality of forgings by visual inspection, surface finish measurement and other methods. Third, the field of application Aluminum and aluminum alloy die forgings, hand forgings, and rolled ring forgings under the guidance of ASTM B247 are widely used in many fields. These forgings are favored for their excellent mechanical properties, corrosion resistance and machinability. as Aerospace Automobile manufacturing Industrial equipment construction, etc IV. Conclusions For the most up-to-date information on the ASTM B247 standard, you can visit ASTM International’s official website or purchase the standard file. In addition, you can refer to relevant resources of relevant industry associations, standards research institutes, and libraries. In summary, ASTM B247 is an important standard specification for aluminum and aluminum alloy die forgings, hand forgings, and rolled ring forgings, which provides comprehensive guidance for the production, processing, and application of products. |