Can all steel rebar be welded?

Can all steel rebar be welded? - E&S Grounding Ask the Experts

Jeff asked:
Can I weld any steel rebar or are there specific grades to look for?

Our Answer:
Not all rebar can be welded, particularly with the exothermic welding process as it must be able to heat the surface of the metal rebar to the melting point in order to ensure adhesion.  In general, only steel rebar that is “Grade W” can be welded.

According to Wikipedia: The American Welding Society (AWS) D 1.4 sets out the practices for welding rebar in the U.S.  Without special consideration the only rebar that is ready to weld is W grade (Low-alloy — A706).  Rebar that is not produced to the ASTM A706 specification is generally not suitable for welding without calculating the “carbon-equivalent”.  Material with a carbon-equivalent of less than 0.55 can be welded (AWS D1.4).

Rebar cages are normally tied together with wire, although welding of cages has been the norm in Europe for many years, and is becoming more common in the US.  High strength steels forprestressed concrete may absolutely not be welded.

Here is the link: http://en.wikipedia.org/wiki/Rebar

We hope you find this information useful.  Feel free to contact us again should you have any further questions.


The Engineering Experts at E&S Grounding Solutions

steel, Grounding & Earthing Below-Grade Electrodes, rebar, welding

Related Posts

Which ground or earthing rod should I use for my site? - E&S Grounding Solutions

Which ground or earthing rod should I use for my site?

Ground / Earthing rods (electrodes) are typically comprised of steel with a thin coating of copper or zinc (galvanized) to protect the steel from excessive corrosion. Copper-bonded ground rods are...

Read More
Do GFCIs and RCDs need a Ground Wire to Work?

Do GFCIs and RCDs need a Ground Wire to Work?

Before we begin, we should really do a quick review of the definition of “ground” or “earth” in electrical terms and what it really means to us. If you think back to your days in school, you may have...

Read More
What are the NEC Requirements for Grounding and Bonding Rebar? - E&S Grounding Ask the Experts

What are the NEC Requirements for Grounding and Bonding Rebar?

Jake Asked:What are the NEC Requirements for Grounding and Bonding Rebar?

Read More
How do I ground a metal building or metal warehouse with metal frame sidings for proper inspection? - E&S Grounding Ask the Experts

How do I ground a metal building or metal warehouse with metal...

PJ Inquired:I bought a 40X24 Metal frame with metal sidings building. No Elec or plumb at present, maybe later. Inspector requires grounding Metal Building. 1×5/8”x8’cu clad steel rod ok tied to...

Read More