Recently, Wuxi Aotian Steel Wire Products Co., Ltd. has achieved bulk
delivery of 10B21 cold heading steel wire. As a mature low-carbon boron-alloyed cold heading steel grade, 10B21 has long been applied in the fastener industry. This supply aims to continuously deliver stable raw material support for customers manufacturing automotive fasteners.
10B21 features excellent ductility and hardenability, with uniform spheroidized microstructure and strictly controlled decarburization layer. It presents low cracking risk during cold forming, suitable for mass production of Grade 8.8–9.8 automotive bolts, nuts and related components. With full-process quality control, Aotian carries out continuous inspection across raw material, wire drawing, spheroidizing annealing, phosphating and saponification surface treatment. The wire maintains consistent dimensional tolerance, good surface finish and stable mechanical performance among batches. It effectively reduces cold forming defects and die wear, helping automotive fastener manufacturers stabilize production and improve finished product yield.
This bulk delivery represents regular supply of Aotian's mature cold heading wire products in the automotive fastener sector. Moving forward, the company will keep focusing on material supporting for auto parts, steadily supply high-quality cold heading steel wire and provide dependable raw material solutions for the fastener industry.
