New Material Application Trend in Fastener Industry, Development Direction of High Strength Anti-corrosion Bolts

With the rapid development of equipment manufacturing, new energy and steel structure industries, higher requirements are put forward for the comprehensive performance of fasteners. Ordinary carbon steel fasteners can hardly adapt to outdoor working conditions with heavy corrosion and high load. The industry is accelerating the application of new materials and advanced surface treatment technologies.

At present, mainstream upgraded materials include SCM435 alloy steel, 304/316 stainless steel and duplex stainless steel. Combined with Dacromet, hot-dip galvanizing and mechanical galvanizing anti-corrosion processes, the service life of fasteners can be greatly extended.

The continuous expansion of downstream projects including photovoltaic, construction machinery and bridge infrastructure boosts the demand for customized high-strength fasteners. Fastener manufacturers need to continuously optimize forging and heat treatment processes, strictly control dimensional tolerances and mechanical properties, and improve quality inspection procedures to ensure stable and reliable performance.

In the future, lightweight, weather-resistant and customizable products will be the main development trend of the fastener industry. Manufacturers should keep up with updated industry standards to strengthen market competitiveness.