GB/T 1222-2025 in English

This standard provides specifications for spring steel, covering material composition, mechanical properties, and testing methods. It outlines the requirements for production, inspection, and acceptance of spring steel products. The standard defines the applicable ranges for various grades of spring steel, ensuring consistency in quality and performance. It also includes guidelines for sampling, preparation of test specimens, and procedures for determining key characteristics such as tensile strength, yield strength, and elongation. The standard aims to ensure that spring steel meets the necessary criteria for use in different applications. It is applicable to manufacturers, suppliers, and users of spring steel products.