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Eutectic alloys for soldering, both traditional alloys composed of lead (Pb) and tin (Sn), sometimes with additional silver (Ag) or gold (Au) — especially Sn 63 Pb 37 and Sn 62 Pb 36 Ag 2 alloy formula for electronics - and newer lead-free soldering alloys, in particular ones composed of tin, silver, and copper (Cu) such as Sn 96.5 Ag 3.5.
A non-eutectic alloy used for die attachment of silicon dies. Ultrasonic assistance is needed to scrub the chip surface so a eutectic (3.1% Si) is reached at reflow. Au 96.8 Si 3.2: 370 [16] 363 [95] Yes: Yes: Au97. [77] AuSi 3.2 is a eutectic with melting point of 363 °C.
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. Non-eutectic alloys can have markedly different solidus and liquidus temperatures, as they have distinct liquid and solid transitions. Non-eutectic mixtures ...
Alloy of choice for joining gold-plated and gold-alloy plated surfaces. As some gold dissolves from the surfaces during soldering and moves the composition to non-eutectic state (1% increase of Au content can increase melting point by 30 °C), subsequent desoldering requires higher temperature. [ 76 ]
This is a list of named alloys grouped alphabetically by the metal with the highest percentage. Within these headings, the alloys are also grouped alphabetically. Within these headings, the alloys are also grouped alphabetically.
The Si content is usually up to 17%, with special piston alloys also over 20%. Hypereutectic alloys have very low thermal expansion and are very wear resistant. In contrast to many other alloys, AlSi alloys do not show their maximum fluidity near the eutectic, but at 14 to 16% Si, in the case of overheating at 17% to 18% Si.
Linotype or eutectic alloy is a broad name applied to five categories of lead alloys used in manufacture of type, especially for the Linotype machine, each with three to five sub-classifications. One alloy is composed of lead with 4% tin and 12% antimony.
Field's metal, also known as Field's alloy, is a fusible alloy that becomes liquid at approximately 62 °C (144 °F). [1] It is named after its inventor, Simon Quellen Field. [2] It is a eutectic alloy of bismuth, indium, and tin, with the following mass fractions: 32.5% Bi, 51% In, 16.5% Sn. [3] When prepared, Field's metal can be melted in ...