The triangle of information shown in this learn node is a phase diagram thermodynamic calculation for solder Bi-Pb-Sn. So who care about something like that? In the advancing complexity of metallurgy, depth of detail is important. This is the explanation of the NIST host of the diagram, whose Web site explains the mission:
The NIST Metallurgy Division is working closely with materials suppliers and users to develop the measurement and standards infrastructure needed in diverse technological areas – from steelmaking to the fabrication of nanostructured multilayers for magnetic recording heads. . . .
Learning about solder might seem more likely to involve technique, like that offered in the PDF which contains the illustration of “Tinning the soldering iron” from About Soldering—making Clip Leads—CLK from MIT’s Open Courseware. A sample of third sort of soldering knowledge available online is this popular Soldering Guide, a tutorial supported by Google ads.
Within the open Internet, patterns of related ideas for the subject of solder can be an amalgam from diverse sources.
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