GB/T 24174-2009
AbolishedSteel - Determination of Bake-Hardening-Index (BH2)
钢 烘烤硬化值（BH2）的测定方法
Application Summary AI generated
This standard specifies the method for determining the bake-hardening index (BH2) of steel sheets, measuring the increase in yield strength after pre-straining and artificial aging. It is applied in the automotive industry to evaluate the dent resistance and formability of steel used for body panels, particularly for grades that gain strength during paint-baking cycles. The testing context involves simulating the forming and paint-baking process to predict final mechanical properties in production.
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