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. 2016 Jan 4;6:18372. doi: 10.1038/srep18372

Table 1. Chemical composition of 100Cr6 steel ball counterbody and T42 grade steel disc used for friction measurement.

(%) C Si Co Mn V W Cr Mo Al Cu Fe
100Cr6 0.98 0.2 — 0.32   0.015 1.43 0.1 0.05 0.3 (Balance)
T42 HSS 1.28 0.05 10 0.1 3.1 9.2 4 3.3 — — (Balance)