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2. Solder alloys - Wikipedia

   en.wikipedia.org/wiki/Solder_alloys

   Silver content reduces solubility of silver coatings in the solder. Not recommended for gold. [12] Forms a eutectic phase, not recommended for operation above 120 °C. Pb 80 Sn 18 Ag 2: 252: 260 [16] Pb: No: Used for soldering iron and steel [28] Pb 54 Sn 45 Ag 1: 177: 210: Pb: exceptional strength, silver gives it a bright long-lasting finish ...

3. Tin-silver-copper - Wikipedia

   en.wikipedia.org/wiki/Tin-silver-copper

   Tin-silver-copper (Sn-Ag-Cu, also known as SAC), is a lead-free alloy commonly used for electronic solder. It is the main choice for lead-free surface-mount technology (SMT) assembly in the industry, [ 1 ] as it is near eutectic , with adequate thermal fatigue properties, strength, and wettability. [ 2 ]

4. Soldering - Wikipedia

   en.wikipedia.org/wiki/Soldering

   Because of their thin, strong oxide films, stainless steel and some aluminium alloys are even more difficult to solder. Titanium , magnesium , cast irons , some high-carbon steels , ceramics , and graphite can be soldered but it involves a process similar to joining carbides: they are first plated with a suitable metallic element that induces ...

5. Solder - Wikipedia

   en.wikipedia.org/wiki/Solder

   Soldering performed using alloys with a melting point above 450 °C (840 °F; 720 K) is called "hard soldering", "silver soldering", or brazing. In specific proportions, some alloys are eutectic — that is, the alloy's melting point is the lowest possible for a mixture of those components, and coincides with the freezing point.

6. Whisker (metallurgy) - Wikipedia

   en.wikipedia.org/wiki/Whisker_(metallurgy)

   Silver whiskers growing out of surface-mount resistors Metal whiskering is a phenomenon that occurs in electrical devices when metals form long whisker-like projections over time. Tin whiskers were noticed and documented in the vacuum tube era of electronics early in the 20th century in equipment that used pure, or almost pure, tin solder in ...

7. Solderability - Wikipedia

   en.wikipedia.org/wiki/Solderability

   Nickel silver Beryllium copper: High thermal conductivity of these metals requires high heat input during soldering. Oxidizes quickly so proper flux must be used. Fair: Carbon steel Low alloy steel Zinc Nickel: Solder joints become brittle in sulfur-rich environments. Avoid higher temperatures in the presence of lubricants (which contain sulfur ...