Do you need flux with silver solder?

Do you need flux with silver solder?

If you're using silver solder – that is, solder with 45 percent silver or higher – to connect copper to steel you must always use an acid-based flux.

Can I silver solder with a propane torch?

Brazing smaller pipes is possible with a small propane torch, but larger pipes such as 1” and up require more heat, therefore, it's recommended to use an oxy/acetylene system with an appropriate torch seeing silver solder melts at a higher temperature than normal solder. And finally, the torch.

Do I need flux to solder?

Do you need to use flux when soldering? When soldering circuit boards, or other electrical / electronic devices, yes – you need to use flux. Fortunately, almost all solder for electronics use has an internal core of flux, so you usually don't need to add more.

What temp does silver solder melt?

When working with silver, the melting point for . 999 fine silver is 1761 degrees F and with sterling silver, it is 1640 degrees F. With solder, there are multiple flow points available because of the complexity of multi-step soldering.

Can you silver solder over soft solder?

Yes you should be able to braze over the solder joint. Heat up the fitting and wipe off as much of the solder as you can with a rag before you try to braze the joint. Re: Braze over soft solder? The valve should be brass, so you may have a problem brazing it unless you use a brazing flux.

How strong is a silver solder joint?

Some hardware stores carry silver solder, but usually the low-temperature type, with a tensile strength around 10,000 psi. The really strong silver solders – tensile strength over 60,000 psi – are a little harder to find.

Can I silver solder with MAPP gas?

Hard soldering (silver soldering) requires temperatures of about 1200 to 1400 degrees F. MAPP should give you this kind of heat, and burns about 350 degrees hotter than propane. MAPP may be overkill for your application however. It is ideally suited for large diameter repairs and makes quick work of big solder jobs.

What type of flux is used for silver solder?

This is a white paste flux that's used for 90% of silver brazing applications. White flux is useful for brazing copper, brass, steel, stainless steel, and nickel alloys. It has an active temperature range of 1050 -1600°F (565 – 870°C).

Is silver solder real silver?

Silver Solder. These are primarily tin, with only traces (maybe 5 percent) of silver and other components. In essence, they are high performance substitues for lead solder (lead solder should never be used on silver items). They are often called silver tin solders, but in some cases are referred to as silver solders.

What does a good solder joint look like?

A good solder joint should be shiny and fill but not overflow the pad. Nearly all bad solder joints are caused by one of three things: not allowing the wire and pad to heat sufficiently, applying too much solder, or melting the solder with the soldering iron instead of with the wire lead.

What does flux do when soldering?

In soldering of metals, flux serves a threefold purpose: it removes any oxidized metal from the surfaces to be soldered, seals out air thus preventing further oxidation, and by facilitating amalgamation improves wetting characteristics of the liquid solder. Several types of flux are used in electronics.

Do you need flux with rosin core solder?

Flux core solder has flux in the center of the solder wire. Additional flux is unnecessary for most applications, but using additional flux still may make the solder easier to work with for some tasks. When selecting flux core solder, it is important to use rosin core solder for electrical applications.

Who makes the best solder?

999 fine silver is 1761 degrees F and with sterling silver, it is 1640 degrees F. With solder, there are multiple flow points available because of the complexity of multi-step soldering.

What is silver solder used for?

Brazing solders are formulated primarily for strength, silver solder is used by jewelers to protect the precious metal and by machinists and refrigeration technicians for its tensile strength but lower melting temperature than brazing, and the primary benefit of soft solder is the low temperature used (to prevent heat

Can you silver solder steel?

But if properly prepared, silver solder will adhere to stainless steel, and you can solder copper, brass or more stainless steel onto it. The connection will only be as strong as the silver solder itself, and never as strong as the stainless steel.

Is plumbing solder the same as electrical solder?

Plumbing solder uses an acid (it's also know as acid core solder). The acid will corrode electrical wiring, so electrical solder uses a milder chemical. Electrical solder is also called rosin core solder because the chemical used to be pine rosin.

Is silver solder good for electronics?

TrakPower Rosin Core Silver Solder is the perfect choice for creating strong solder joints with low resistance and high conductivity. It is safe for the environment and is RoHs compliant, containing no lead and only 3% silver. Perfect choice for wide variety of electronic soldering applications.

What type of flux is used for electric soldering?

Since the solder is even in the electrical lead its electrical conductivity is also improved. There are three main types of fluxes in use today: rosin flux, organic acid flux, and inorganic acid flux. Rosin flux is the oldest and still one of the most common fluxes used for electrical components.

What is the tensile strength of silver solder?

The really strong silver solders – tensile strength over 60,000 psi – are a little harder to find. You can probably get some at a welding supply shop, but the easiest source is a mailorder house.

Can you braze with a propane torch?

Brazing with Propane. Here is the answer to whether you can braze with a propane / air torch. You can but you have to control the environment so that the heat loss to the atmosphere and parts is lower than the heat being put into the braze joint. It is a standard braze alloy that melts over a range of 1250 – 1305 F.

How do you weld silver solder?

Silver bearing solder: (that is, contains silver, not for roller bearings) Silver is used in one of the leading alloys for lead free solder (An96. 5% Ag3. 0% Cu. 5%) and also as an addition to tin-lead solder, usually in the 2-4% range (when you se 62/36/2 this means Sn64Pb36Ag2).

What’s the difference between brazing and silver soldering?

The basic difference between soldering and brazing is the temperature necessary to melt the filler metal. That temperature is defined to be 842ºF/450ºC by the American Welding Society (AWS) but is often rounded to 840ºF. If the filler metal melts below 840ºF the process being performed is soldering.

What is the difference between welding and soldering?

The main difference between welding and soldering is melting. In soldering, metal fabricators heat the metal to be bonded but never melt them. Welding requires about 6,500 degrees Fahrenheit, while soldering requires about 840 degrees Fahrenheit. Workpieces and the metal base are heated and melted in welding.

What is the best solder for automotive wiring?

Use rosin core solder; the center contains flux that cleans the surface of the wire to be soldered. Solder is often a combination of mixed alloys. Automotive applications use 60/40, containing 60% tin and 40% lead.

What is silver solder made of?

The normal silver solders used by silversmiths and jewelers are a mix of silver, copper, and zinc, with sometimes the addition of a little cadmium for the extra easy types.

Is brazing flux the same as soldering flux?

Brazing flux is critical to the brazing and soldering process because it minimizes the oxidation that may form on both the brazing filler metal and the materials being joined. Numerous formulations of flux are available for virtually all metal joining operations.

Is there any other form of flux is available?

There are three types of rosin flux — rosin (R), rosin mildly activated (RMA), and rosin activated (RA) — each of which have a different level of activators, the agents enabling the flux to deoxidize and clean. (Note: You can also find inorganic water soluble flux, which is even more powerful than water soluble flux.)

What temp does solder melt?

Soft solder typically has a melting point range of 90 to 450 °C (190 to 840 °F; 360 to 720 K), and is commonly used in electronics, plumbing, and sheet metal work. Alloys that melt between 180 and 190 °C (360 and 370 °F; 450 and 460 K) are the most commonly used.

Does Harbor Freight sell solder?

Lead-Free Rosin Core Solder. Shop your Local Harbor Freight store!

Why is it less likely that a part would be damaged with brazing than with welding?

4. Why is it less likely that a semiskilled worker would damage a part with brazing than with welding? Because unlike welding, the brazing heat source can have a maximum temperature below the temperature that may cause damage to the parts.

What are the types of soldering?

In summary, there are three main types of solder: lead-based, lead-free, and flux. Lead-based solders are the best understood, are reliable, and preferred in mission critical applications such as aerospace or medical electronics.