Chemistry — Phase: aluminium–silicon (eutectic)
A classic eutectic casting alloy.
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title "Aluminium-silicon (eutectic)"
type binary
basis weight
component A "Al" melting 660
component B "Si" melting 1414
// Eutectic 12.6 wt% Si at 577 C. Al melts only 83 C above the
// reaction, which is why its liquidus branch is the short one.
eutectic 0.126 577
region "Liquid" at (0.55, 0.94) color teal
region "Al + liquid" at (0.06, 0.32) color amber
region "Si + liquid" at (0.60, 0.58) color amber
region "Al + Si (eutectic)" at (0.45, 0.15) color purple