Introduction to the strength classifications of steel and the types of steel (representative examples)!
In the process of electro-galvanizing, hydrogen is generated, which can infiltrate the interior of the bolts, creating voids and reducing their strength (hydrogen embrittlement). Therefore, for bolts with a strength of up to 10.9, it is acceptable to perform a baking treatment (heating the bolts to release hydrogen) after plating. However, for bolts with a strength of 12.9, hydrogen is less likely to escape, leading to hydrogen embrittlement, which poses a risk of the bolt head breaking off during tightening. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*
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