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Bronze. For steels where lower temperature than with pure copper is required. 95: 4.7: 0.3: Cu 93.5 Sn 6.3 P 0.2: Cu–Sn 910/1040 [1] – CU 201. Bronze. Requires fast heating to avoid problems with wide melting range. 93.5: 6.3: 0.2: Cu 92 Sn 7.7 P 0.3: Cu–Sn 881/1026 [26] – CDA 521. Bronze. For steels where lower temperature than with ...
Sn 96.5 Ag 3.5: 221 [11] Yes: Yes: Sn 96, Sn 96.5, 96S. Fine lamellar structure of densely distributed Ag 3 Sn. Annealing at 125 °C coarsens the structure and softens the solder. [51] Creeps via dislocation climb as a result of lattice diffusion. [72] Used as wire for hand soldering rework; compatible with SnCu 0.7, SnAg 3 Cu 0.5, SnAg 3.9 Cu ...
Rosin used as flux for soldering A flux pen used for electronics rework Multicore solder containing flux Wire freshly coated with solder, held above molten rosin flux. In metallurgy, a flux is a chemical reducing agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time.
Acid cleaning bath or mechanical cleaning can be used to remove the oxidation after work. Flux counteracts the oxidation, but may weaken the joint. Combusted fuel gas Low hydrogen, AWS type 1, "exothermic generated atmospheres". 87% N 2, 11–12% CO 2, 5-1% CO, 5-1% H 2. For silver, copper-phosphorus and copper-zinc filler metals.
In contrast to using traditional bars or coiled wires of all-metal solder and manually applying flux to the parts being joined, much hand soldering since the mid-20th century has used flux-core solder. This is manufactured as a coiled wire of solder, with one or more continuous bodies of inorganic acid or rosin flux embedded lengthwise inside it.
Wave soldering uses surface tension to keep solder from bridging the insulating gaps between the copper lines of flux-coated printed wiring boards/printed circuit boards. The electric soldering iron is widely used for hand-soldering, consisting of a heating element in contact with the "iron" (a larger mass of metal, usually copper) which is in ...
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