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Table 1 Material composition of the specimens (%)

From: Tribological Properties of Cylinder Block/Valve Plate Interface of Axial Piston Pump on the Tribometer

Composition C Si Mn Al P Cr S Ni Mo
38CrMoAl 0.35–0.42 0.20–0.45 0.30–0.60 0.70–1.10 ≤ 0.035 1.35–1.65 ≤ 0.035 ≤ 0.030 0.15–0.25
42CrMo 0.38–0.45 0.17–0.37 0.50–0.80 ≤ 0.035 0.90–1.20 ≤ 0.035 ≤ 0.030 0.15–0.25
Composition Cu Sn Pb Ni Zn Other    
CuPb15Sn5 Margin 4.0–6.0 14.0–16.8 1.0–2.0 < 0.05 < 1.0    
Result Margin 4.6 15.36 1.37 < 0.03 < 1.0