1983-11-07

The Use of Low-carbon, Manganese, Vanadium Boron Steel (15MnVB) to Make Automotive High Strength Bolts and Studs 830869

The 15MnVB steel is designed to be quenched and tempered at low temperature. Heavy-duty bolts made of this new grade steel have higher strength, better toughness and lower fracture transition temperature. Through years of practice, it can be concluded that the new material has better technological performance. Annealing for spheroidization is generally unnecessary prior to cold-heading.
The bolts have been shown to be guaranteed in good performance in mass production and long term application.

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