Results and Conclusion
Microstructures for sample made by other brand and by ABC are show in fig.(a) and fig.(b). The measured surface hardness values for the other brand and ABC product are HR15T78 (approximate HB88) and HR15T85 (approximateHB120) respectively.

The ABC product reveals finer microstructure with higher hardness value due to proper selection
of composition and processing, and hence better wear resistance can be obtained.

Registration Number: 022690

Acme Bearing Corporation
Tel: 886-49-2327396 Fax: 886-49-2327395 E-mail:
73,Bao An Street, Tsao Tun Township, Nan Tou Country, Taiwan