Welding vs. Soldering — What's the Difference?

Welding is a fabrication process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool, causing fusion. Welding is distinct from lower temperature metal-joining techniques such as brazing and soldering, which do not melt the base metal.

Soldering (AmE: , BrE: ) is a process in which two or more items are joined together by melting and putting a filler metal (solder) into the joint, the filler metal having a lower melting point than the adjoining metal. Unlike welding, soldering does not involve melting the work pieces.

To join (metals) by applying heat, sometimes with pressure and sometimes with an intermediate or filler metal having a high melting point.

Any of various fusible alloys, usually tin and lead, used to join metallic parts.

To bring into close association or union.

Something that joins or cements.

To be capable of being welded.

To unite or repair (parts, for example) with solder.

The union of two metal parts by welding.

To join or unite

The joint formed by welding.

To unite or repair something with solder.

Present participle of weld

To be joined or united.

The action or process of welding:

Present participle of solder

Joining two materials (especially two metals) together by applying heat, pressure and filler, either separately or in any combination, or

A method of joining two metallic surfaces by melting an alloy between them.

Binding together inseparably; uniting closely or intimately.

An instance of soldering.

Fastening two pieces of metal together by softening with heat and applying pressure

A soldered joint.

Fastening firmly together