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The distinction between silver-containing tin wire and tin-copper tin wire

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Update time : 2022-11-24 15:29:15
Lead-free tin wire is generally divided into silver-containing tin wire and tin-copper tin wire. So how to distinguish these two tin wires? Let me introduce it to you.
1. Due to the role of silver metal, silver-containing solder wire has better, stronger firmness and stronger solder joints than tin-copper lead-free solder wire.
Secondly, conductivity is also a very important indicator in solder joints. Silver is a metal with good electrical conductivity, so silver-containing solder wires conduct electricity and heat better than tin-copper lead-free solder wires. These properties cannot be surpassed by tin-copper-lead lead-free tin wires.
2. Different costs: Because silver metal is expensive, the cost of silver-containing solder wire is more expensive than that of tin-copper lead-free solder wire. This is the advantage of tin-copper lead-free tin wire. The higher the silver content in silver-containing tin wire, the more expensive it will be.
3. The glossy color of the solder joints is different: the glossy color of the solder joints affects the brightness and color of the appearance of the solder joints. Since silver metal is a matte metal, not a bright metal, solder joints containing silver solder wire will not have a shiny shine and appear dull. However, the luster of tin-copper lead-free tin wire shows a certain brightness and looks better. This is also one of the advantages of tin-copper lead-free solder wire, but the glossy color of the solder joint does not represent the soldering performance of the solder joint itself.
4. Different melting points: Different metal alloys have different melting points. The melting point of silver-containing solder wire is 217 degrees, while the melting point of tin-copper lead-free solder wire is 227 degrees. The difference is 10 degrees.
How to distinguish these two tin wires above? The common point of tin wire is lead-free solder wire series products, all of which have passed the EU ROHS certification and have the inherent characteristics of lead-free solder wire.
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