Table 5 Microhardness results of Sn-0.7 Cu-x (WS, RHA) composite solders.

From: Enhancing sustainability in soldering: effects of recycled welding slag and rice husk ash on microstructural, thermal, and mechanical properties of Sn–Cu composite solders

Alloy

HV (kg/mm2)

SD

S0

13.29

0.54

S1

14.94

0.76

S2

13.63

0.47

S3

18.92

0.66

S4

14.05

0.52

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