Master of the elements
Copperweld's engineered products provide measurable advantages over commodity copper wire in a wide range of product applications.
WHAT YOU NEED TO KNOW
Before you purchase your next conductor
Not all conductors are equal. Copperweld® brand products are designed to be the best at handling the worst of punishment. Copperweld manufactures the only welded copper wires and accessories with a flexible, bimetal core made in the USA. That means our wires stand strong against the elements, decades of wear, and even copper thieves, too.
Perfectly Ruggedized
For applications that matter most — critical applications that call for more reliability than usual — engineers select components that have stood the test of time. Only Copperweld® brand wire offers the durability to deliver a century of service in critical applications like power, rail, and automotive.
Engineered Conductor
Using a proprietary high-heat, high-pressure process, we permanently join high-strength steel or aluminum and the world’s highest quality copper (OFC). The copper protects the core metal from corrosion, and the core strengthens the copper. Offering the same electrical performance as solid copper and the strength of steel or aluminum, Copperweld is the best choice for demanding applications.
Distinctly Different
The reliability of a conductor depends on its core strength. Copperweld wire combines the strength of steel with the conductivity and corrosion resistance of copper. These properties are achieved by permanently welding a thick copper covering to a steel core — making Copperweld wire ideal for real world application threats like hammer blows, axe strikes, door pinches, and the punishing effects of mother nature.
Cost-Conscious
When used size-for-size (as in signal wire and rural grounding applications), Copperweld is both lighter and more reliable than copper, saving money. Whether you're protecting your power network, construction project, vehicle components, or your pocket, Copperweld's long life means big savings over time. Our conductors maintain spec-compliance long after most competitors' are replaced.
The Physics of Wiring
Electricity runs along the outside of conductors. Solid copper wires waste valuable copper within their core. The unused middle of a conductor is a great place to add strength for survivability and increased service life. Copperweld’s flexible stranded wire solutions stand strong against the elements, decades of wear, and even copper thieves, too.
Bimetal Recycling
How do you beat a copper thief? Take away his financial incentive. Copper recyclers pay top dollar for solid copper scrap because it can be easily melted and sold at almost the market price of copper. Copperweld’s permanently-bonded copper covering can never be returned to virgin copper — making our conductors unattractive to recyclers and unprofitable for copper thieves.
Relieving Stress
Copperweld bimetal wire is annealed to relieve the mechanical stresses introduced from drawing the wire down to size. Annealing can make even steel-core wire bend like copper while remaining as strong as steel in tension and shear. Our finished products are ready to survive real-world application threats like hammer blows, axe strikes, door pinches, or the punishing back-and-forth abuse of wind.
Soft Bending
Copperweld is not stiff anymore — it feels better. (Yes, we've heard the complaints from linemen, too.) Today’s product offering includes stranded solutions that are soft to bend or train in the field and are even more flexible than copper. Of course, we can manufacture stiff, solid bimetallic for replacement of legacy material. Whether new or old, all of our products fit industry-standard copper connector sizes, too.
Making better even better
Copperweld may have written the book on copper-welded steel, but that doesn't mean that we've closed the book on improvement. The same culture of excellence and innovation that originally inspired our first products over 100 years ago still drives us today. We're always looking for better ways to test, manufacture, optimize, customize and support the products we deliver. We're committed to getting better every day.
Continuous improvement
'Better' is not the accident of chance; it's the outcome of purpose. That's why we're always revisiting performance tests, improving manufacturing processes, expanding our product offering and diversifying market reach.
Dedicated support
With over 100 years of experience supporting and specifying mission-critical applications, the Copperweld sales, support and leadership teams are among the most knowledgeable subject matter experts in their fields.
Faster lead times
Made in the USA, Copperweld offers more than the quality and dependability that often comes with domestic manufacturing. Our strategic location allows us to offer bundled custom orders and provide lead times as short as 2 days shipped.
SEE FOR YOURSELF
Better in Real Life

17% More Reliable Grounding Solution Video Series
by Jeff Jordan
In this video series, Copperweld’s Jeff Jordan explores trends, technologies, and challenges to conventional thinking in the field of high voltage grounding conductor selection.

17% More Reliable Grounding Solution
by Jeff Jordan
This article introduces a method for quantifying the reliability of grounding conductors for the design of substations and other high voltage electrical applications.

Short Circuit Performance Considerations for CCS
by Jeff Jordan
This paper presents empirical evidence spanning several decades that questions the conventional short circuit performance calculations used to select copper-clad steel (CCS) conductors.