Acid Core Solder and Its Uses

SolderSoldering is used across a variety of industries today as an effective means of joining metals together. While soldering is typically associated with electronics manufacturing, its use extends to wide spectrum of industrial sectors. Acid Core solders are used in OEM/Industrial applications as well as being used by electricians, plumbers, metalworkers, artisans, automotive repair and manufacturing, aerospace repair and manufacturing, heat exchange, roofing, solar and energy and many more industries.


Soldering is a process of joining  two or more items by melting and putting a filler metal into the joint.  The filler metal, known as solder, has a lower melting point. To solder metals together a soldering gun or soldering iron is used which will melt the solder wire so that it can flow into the joints of the metals and fuse them together in a semi-permanent bond.

Rosin and Acid core solders are manufactured with the solder wire as a tube and the tube contains flux.  While rosin core wire is typically used in electronics, the name acid core, denotes that the flux is an aggressive type designed to solder steel as well as other metals.

Acid Core Soldering

The uses for acid core solder include the joining of oxidized metals. The acid core in the solder cleans the oxidation off the metal, making for a satisfactory joint.  Examples of this include joining together parts of engines in cars or other machinery, and in plumbing to strip the layer of oxidation off the surface of pipes as the solder melts, allowing it to form a waterproof joint. 


Acid core solder can work with any type of oxidized metal except aluminum because the acid core will burn the metal and although uses for acid core solder are varied it is not the recommended for electronics. due to the corrosive nature of the residue.

Purhasing Acid Core Solder

Acid core wire is available in most tin/lead alloys as well as lead free alloys. There are also many variations in diameter. 
If you have questions about what type of solder to choose for your project or to inquire if acid core solder will work for your needs, you can contact our sales team for technical assistance.
Mayer Alloys offers free technical assistance to ensure you are getting the right material for your needs. Contact us today for more information on Acid Core Solder or for technical assistance  at 844-564-6087 x110 or via email at
How can we help you? Request a quote here.
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