Melting point of soft solder
- Thread starter Mike2007
- Start date
Google is your friend!!!
Wiki, says 90-450 C
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subman101
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all solders that melt below 450 C are classed as soft solders!!!!
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subman101
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FFS. all solders that melt above 450 C are classed as hard solders!!!
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subman101
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I think I has me a"TROLL"
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subman101
Just kidding. Didn't understand the op's reply about 200, which was contrary to that wiki info.
Thought you'd cottoned to the playfulness - misjudged your lack of humour
183 degrees Celcius
- tin lead , and leadfree is similar ( cuz they made it to be so )
Normal leaded solder was 60/40 tin/lead, which meant it was a eutectic alloy. That means it freezes at one temperature. You'll have to google for the numbers.
WHat that means is that that's the only one which has a simple "melting point".
For lead-free solder there isn't a convenient alloy which would be eutectic, so it freezes over a range of temperatures ("mushy" freezing) a bit like some of the lead solders which were used for wiping joints, which are also non-eutectic because they aren't 60/40.
If you look at an equlibrium diagram (aka a phase equilibrium diagram) for a particular alloy composition, find the liquidus and the solidus. The melting range is between those two.
Not the science of the moonly rockets, but a longer answer than you might have expected.
WHat that means is that that's the only one which has a simple "melting point".
For lead-free solder there isn't a convenient alloy which would be eutectic, so it freezes over a range of temperatures ("mushy" freezing) a bit like some of the lead solders which were used for wiping joints, which are also non-eutectic because they aren't 60/40.
If you look at an equlibrium diagram (aka a phase equilibrium diagram) for a particular alloy composition, find the liquidus and the solidus. The melting range is between those two.
Not the science of the moonly rockets, but a longer answer than you might have expected.
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