formed a very interesting study where he analyzed and com- pared the frictional properties of bismuthized bronzes (with various bismuth and tin contents) to standard leaded bronzes (C93200, C93600) as well as to a commercially available lead-free bearing material (C89320). Continuous casting was used to produce the test coupons. The results presented


showed that the bismuthized bronzes have similar mechani- cal properties and wear rates to those with lead. It has been also concluded that leaded bearings/bushings could be re- placed by bismuthized bearings/bushings without any loss of performance. However, the author did not carry out any bearing rig test for performance evaluation.


Figure 1. Web bar casting design.


Figure 2. Schematic of machined tensile specimen.


Figure 3. Schematic of the machined fatigue specimen. 20 International Journal of Metalcasting/Winter 10


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