Why copper is not used for soldering?
You can't use it because it has the same melting point as the pipe you are trying to seal. It just will not work. What you use has to have a lower melting point than what you are trying to weld or attach to.
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When working with copper pipes are compression fittings good enough to use or is soldering recommended?
\n. \n Answer \n. \ncompresion fittings usually work well if u have any problems use some sealing tape\n. \n. \n Answer \n. \nIf you are going to have the pipes in… wall use solder, any copper exposed you\ncan use compression.
To prevent oxidation and allow the alloy to flow into the fitting capillary action (attraction) and it is best to use a non acid flux and if one knows how to braze they can br…aze joints with a tensile strength of 87,000 PSI without the use of flux PROVIDING you use the correct rod as per AWS
Your question is listed in "Plumbing" but you are talking about copper wire and a lug ? IF you are asking what type of solder ? The answer would be 60/40 rosin core .. Dont… use acid flux or large globbs of rosin like in plumbing .. How big a lug ?? General electrical, electronic low current or a big car battery terminal ???. General rule is : #1 surfaces must be clean #2 A tight PHYSICAL connection must be made first . #3 Heat the area to be soldered before soldering .. Higer grade solder like 50/50 ( more tin) or Silver solder can be used for higher current applications . Lead solder tends to melt easier which is good going on but not so good if your connection is heating up .
95 -5 or any other LEAD FREE type of alloy
You put Flux on the pieces to be joined to clean them and to help the solder flow. Solder for the joint and heat it with a propane torch. Clean both surfaces with steel wool o…r emery cloth, put a thin film of flux on both pieces, put them together. Heat the outside piece on one side only. After heating for a while, touch the solder on the opposite side from the flame. If it is hot enough, it will melt the solder and pull it around the piece to the flame. That means it is soldered all the way around the joint.
That's what most people use. If a professional plumber ( one who actually had formal training) they would never use propane unless they are suicidal. 1- Propane is heavier… then air thus it pockets 2- Propane does not give the same heat as Acetylene 3- Acetylene is a lot safer . Yes one can solder with Propane and one can solder with Mapp and even solder piping with electric where the use of an open flame is not advisable . As long as the heat source is above the melting point of the alloy it should flow by capillary attraction
What to use to solder a shut off valve
Use lead-free solder, 0.2 percent lead or less. Lead free means NO Lead your better off with a silver bearing alloy as it has a longer pasty range or 95% tin 5% antimoney …Actually the term "solder" means lead bearing according to the AWS specifications
It is not a good idea to use copper pipe with natural gas as any sulphur compounds in the gas can cause an oxide to form in the copper pipe. Often copper is used with propan…e. In these instances, soft copper tubing is usually used with compression fittings. The tools required are, pipe cutter and 2 wrenches.
Any type that is lead free such as 95% tin 5% antimony or silver bearing alloys
What valve?...on the torch? Open it up enough to play a good flame. If you are soldering on a valve, you need to take out the valve stem from the body unless you want to me…lt the seats. Opening the valve is not enough.
Copper tubing solder "Solder" is an erroneous term as solder mean lead which of course is banned (safe water drinking act) Sweating is another term for "soldering" Copper …can be joined by various alloys such as 95 % tin -5% Anatomy or one of the many silver bearing types of low temperature alloys. For the strongest possible joints brazing is the best way to go with a tensile strength over 87,000 PSI compared to soft solder joints of 16,000 PSI For DWV copper joints one can use one of the lead tin solders such as 50 -50 as it is quite easy to work woth.
Emery cloth and non acid type flux
All flux has acid so yes u can as long as u wipe it clean after u solder it will cause Ur joint to turn green
no....never use a solvent when working gas lines