Hardware Components

Carbon steel covers nearly all hardware component needs. SS400 and A36 general structural steels are the standard for basic bolts, nuts, U-bolts, and anchor bolts used in structural steelwork, machine frames, and general fastening. Low-carbon S10C/S15C/S20C suit rivets, washers, pins, and stampings where ductility aids cold forming. S35C and S45C cover higher-strength bolts, nuts, hinge pins, and eye bolts. S45C with induction hardening achieves significantly higher surface hardness for wear-resistant pulley shafts and guide pins.

Alloy steels in hardware focus on high-strength fasteners and safety-critical load-bearing parts. SCM435 is the standard for 10.9-grade and above high-strength bolts widely used in automotive chassis and structural applications. SCM440 handles 12.9-grade bolts and high-preload anchor bolts. Industrial hooks, lifting rings, shackles, safety snaps, and rigging hardware are safety-critical — failure causes dropped-load incidents. SCM440 Q&T for heavy-duty hooks and shackles ensures no brittle fracture under repeated dynamic shock loading.

Cold heading steel is the lifeblood of Taiwan's fastener industry, which ranks top-three globally in screw and nut exports — almost entirely cold-formed. 10B33 after spheroidize annealing delivers excellent cold formability and is the primary cold heading material for 8.8-grade structural and flange bolts; boron addition ensures adequate hardenability depth even in small diameters. 50BV30 suits higher-strength, higher-fatigue-resistance fasteners with stable post-Q&T properties. 40ACR handles special fasteners and formed parts requiring higher post-forming strength. Spheroidize annealing quality directly determines fastener plant die life and defect rates — insufficient spheroidization means excessive resistance during cold forming, premature die wear, and product cracking.