Copper Bar Stock

All imperial bars are stocked in 144 in (12 ft) lengths of cold-drawn half-hard C11000 copper. Thickness x width as listed; item codes are SHANYUAN stock references.

Metric sizes are stocked on the same 144 in standard length and can be cut to any mm length. Thickness x width as listed; item codes are SHANYUAN stock references.

Need bent, punched and plated parts rather than raw bar? The same stock feeds our custom copper busbar fabrication line, so one supplier covers both semi-finished and finished needs. For earthing work, browse the grounding busbar kits, and if you are weighing copper against aluminium for a new build, our copper vs aluminium comparison covers conductivity, weight and cost. Request a cut list or a sample bar by contacting the factory.

The C11000 copper busbar bar we hold in stock is one alloy out of a short list, and knowing when to step sideways saves rework. The table compares the grades fabricators usually weigh against our default ASTM B187 copper bar stock.

ETP copper at 99.90% Cu with a controlled oxygen level is the sweet spot: conductive enough for distribution and fault duty, tough enough to punch and bend without cracking. The values are typical published figures for planning; confirm chemistry against the mill certificate that ships with your order. Fabricators moving between metric imperial copper bar sizes on the same job should note both series cut from the same 144 in parent length. Cold-drawn half-hard stock bends cleanly on shop brakes; if your drawing calls for tight radii, ask for the softer temper supply so cracking stays off the list of reworks. Earthing and fault-duty bars take the same half-hard stock: its low earth-fault resistance is why panel builders keep a shelf of it on site. The background on material choice is in the busbar basics guide.

Stock buyers usually know the current the finished bar must carry, not the section number. The three-step pass below converts a rating into a stocked bar, in either unit system.

1. Note the steady current the fabricated bar must carry, plus the ambient temperature it lives in.
2. Read the first-pass section from the ampacity chart, then match it to a stocked metric or imperial bar.
3. Send the cut list with lengths; deburred ends ship on the same lead time.

Ratings are planning estimates for bars in free air; inside a sealed cabinet derate before cutting. Bars ship bare, pre-tinned or silver-flashed, and identical parent stock also feeds our finished-parts line, so prototype and production cut lists sit on one shelf. Cut bars arrive deburred to length, and prototypes ship from the same shelf as volume orders - no minimum-order penalty on the first run. Full 12 ft bars ship to the maintenance shelf, and cut lengths ship to the assembly line - both from one supplier, so your stock list does not split across vendors. For cut-to-length and plating options read the design guide or ask the factory directly for a sample bar.