ECO; SOLDER Alloy composition (wt%) Solidus; line Peak Liquidus; line BAR CORED So... M705 Sn‑3.0Ag‑0.5Cu 217 219 220 ● ● ● M30 Sn‑3.5Ag 221 223 223 M31 Sn‑3.5Ag‑0.75Cu 217 219 219
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