Quick Answer: Does Plumbing Solder Go Bad?

How long does a solder joint last?

I have only seen two solder joints in my whole life that held for a long time and started leaking later.

Generally, if the joint holds for the first minute under pressure, it’ll hold for the next 500 years..

Why does my solder not stick?

If you let the solder sit on the iron, the flux quickly boils off (the fumes are from flux, not the lead). And without flux, soldering becomes almost impossible. Flux removes oxidation from metals, and it’s crucial because solder won’t stick to oxidized metals, and metals oxidize very quickly at soldering temperatures.

Does flux have a shelf life?

Flux-coated and cored preforms have a limited shelf life determined by the alloy used in the preform. Alloys containing more than 70% lead have a 2 year shelf life from the date of manufacture. All other alloys have a shelf life of 3 years from the date of manufacture.

Can you reheat a solder joint?

The way you repair a cold joint is by reheating it with your soldering iron until the solder begins to flow. Cold joints frequently have excess solder which you can draw off with the soldering iron tip. You can prevent cold solder joints by giving your soldering iron sufficient power and time to warm up.

How do you test for good solder?

After you’ve completed a solder joint, you should inspect it to make sure the joint is good. Look at it under a magnifying glass, and gently wiggle the component to see if the joint is stable. A good solder joint should be shiny and fill but not overflow the pad.

Are soldering fumes dangerous?

Soldering with lead (or other metals used in soldering) can produce dust and fumes that are hazardous. In addition, using flux containing rosin produces solder fumes that, if inhaled, can result in occupational asthma or worsen existing asthmatic conditions; as well as cause eye and upper respiratory tract irritation.

Why do soldering tips go bad?

How are they going bad for you? > > If it’s a copper tip that’s not iron plated, it goes bad because copper > dissolves in solder. > > … Then, you put a layer of solder atop that and the tip is tinned. So, you can rub through (or dissolve) the sticky layer, and oxidize the iron layer.

Can you use old solder?

The more oxidation on the solder, the less effective the rosin. The rosin has to overcome the oxidation from the solder as well as whatever oxidation on the parts being soldered. … “For now, I came to the conclusion you can use old solder, but you add another potential problem to your project.

Can you use too much flux when soldering?

Don’t overheat the flux If you heat the joint too long, you’ll burn the flux (it’ll smoke and turn black) and make it difficult to get the solder to flow into the joint. Applying just the right amount of heat comes with practice, but it’s not hard to learn.

What does a bad solder joint look like?

A Disturbed joint is one that has been subjected to movement as the solder was solidifying. The surface of the joint may appear frosted, crystalline or rough. Often called a ‘Cold Joint’. They can look similar to a true cold joint, but the cause is different.

How can you tell if solder is bad?

the solder should be shiny after it hardens. If it has gone bad it will stand around on street corners, smoking cigarettes and making weird sucking sounds at female passersby. Another sign of a bad solder joint is if the solder is dull after it hardens, this is what happens with a “cold” joint.

Can you solder without flux?

It’s ok, if you can do it, but it’s very difficult to solder without flux. The flux breaks down the oxide layers on the metal surfaces and allows the solder to “wet” them. If it doesn’t wet, it doesn’t make a connection. … It’s normally always necessary to use flux when you solder.

Is ProPress better than solder?

Unlike soldering, ProPress systems do not need an open flame to be completed. This creates a safer work environment and by not requiring a hot work permit, saves time. Another advantage over soldering, ProPress fittings can be installed without having to drain and dry the system beforehand.

How long should solder cool before turning on water?

30 seconds should be long enough. Once the solder has solidified, you are good to go. The water will only make it solidify faster by cooling, but if it is still molten, the water pressure will separate and/or pollute the joint.