hello technet

the mostly discussed problem of the plasic range of 60/40 solder can be
answered in two statements

--- the eutectic point is at 61.9 weight percent tin (Thaddeus B Massalski
Binary Alloy Phase        Diagrams ASM)
--- binary phase diagrams show the constitution of alloys at the
equilibrium
    after a very slow cooling rate
    during a technical cooling (soldering) the cooling speed is so high
that you cannot notice a      plastic range. 

Karl Ring
ZVE 

 

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