Heat Treatment Technology of Automobile Fasteners

Heat Treatment Technology of Automobile Fasteners

With the development of the automotive industry, the requirements for automotive fasteners are getting higher and higher. China’s automotive high-strength fasteners are the main varieties of bolts, there are 8.8, 9.8, 10.9 and 12.9 grade 4 strength levels, these strength levels of fasteners have to be heat-treated to improve the overall mechanical properties of the […]

 
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