T/SHXCL 0025-2026 Galvanized hot-formed automotive components

Scope

This standard specifies the terms and definitions, classification and marking, requirements, test methods, inspection rules, marking, packaging, transportation, storage, and safety of galvanized hot-formed parts. This standard applies to automotive safety structural parts, battery pack casings, and chassis system components produced by hot-forming processes with a zinc-based coating (pure zinc coating GI, zinc-iron alloy coating GA, etc.). High-strength galvanized hot-formed parts used in special machinery, agricultural equipment, and other fields can be referenced for use. As core materials for automotive safety structural parts, battery pack casings, and other critical components, hot-formed automotive parts have become a key support for the transformation of automotive lightweighting and high safety. However, there are significant technical bottlenecks and standard gaps in both domestic and international industries. This standard clarifies key indicators and test methods for zinc-based coated hot-formed automotive parts, including dimensions, composition, mechanical properties, coating quality, and corrosion resistance, filling the domestic standard gap in this field and solving the problem of no basis for product quality evaluation. To address the existing problems of poor bending toughness, uncontrollable strength, and low corrosion resistance of high-strength hot-formed steel in the production process, this standard achieves the localization of indirect hot-forming technology through the optimization of coating formulations, the industrialization of new indirect hot-forming processes, and new quenching data control models.

Development Information

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