Table 1 Chemical composition of Sn–Cu-x (WS, RHA) composite solders in nominal wt%.

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

Cu (wt%)

WS (wt%)

RHA (wt%)

Sn (wt%)

S0

0.7

–

–

Bal.

S1

0.7

6

–

Bal.

S2

0.7

12

–

Bal.

S3

0.7

–

6

Bal.

S4

0.7

–

12

Bal.

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