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Manufacturing services
CNC milling and turning · From 1 part
Bus bars, terminals, connectors, heat sinks and electrical parts in C110 copper, machined from your file. Upload your CAD and order online, starting at a single part.
Bus bar
C110 Copper · 120 × 25 × 6 mm · 3 × Ø10.5 chamfered holes · Rounded corners · CNC milled
1 pc
$54.80 USD
per part
25 pcs
$15.07 USD
per part
-72.50%100 pcs
$13.45 USD
per part
-75.46%C110 copper (UNS C11000, electrolytic tough pitch or ETP copper) is the most common electrical copper: 99.9% copper, electrical conductivity of 100% IACS min and thermal conductivity of about 391 W/m·K. That is why it is the material for bus bars, terminals, connectors and heat sinks. At PREMSA we CNC mill and turn it from your file, starting at a single part with an instant price.
C110 copper properties: mechanical, physical, thermal and electrical data to choose the material for your machined part.
Material Type
Electrolytic Tough Pitch (ETP) Copper
Purity
99.90% Copper (min)
Primary Characteristics
Very high electrical and thermal conductivity, good ductility, non-magnetic
Tensile Strength (Ultimate)
32–42 ksi (221–290 MPa)
Tensile Strength (Yield)
10–36 ksi (69–248 MPa)
Elongation at Break
20–40%
Rockwell Hardness
40–90 HRF (depending on temper)
Density
8.89 g/cm³ (0.321 lb/in³)
Elastic Modulus
17,000 ksi (117 GPa)
Poisson’s Ratio
0.33
Thermal Conductivity
391 W/m·K (≈ 226 BTU/ft·hr·°F)
Coefficient of Thermal Expansion
16.9 µm/m·°C
Melting Point
1083 °C (1981 °F)
Electrical Conductivity
100% IACS min (annealed)
Machinability
Low: it is soft and gummy; machined with very sharp, polished-edge tooling and coolant, with care for burrs
Weldability
Excellent for soldering and brazing; oxyacetylene welding and brazing in a hydrogen atmosphere are not recommended
Corrosion Resistance
Excellent in air, water and industrial atmospheres; it darkens and forms a patina over time
Plating & Surface Finish
Excellent for Tin, Silver, Gold, and Nickel plating
Common Forms
Bar, flat bar, plate, sheet and wire
Typical Applications
Bus bars, terminals and connectors, heat sinks, transformer and switchgear parts
Standards
ASTM B133, B187, B152
Rating across key engineering and manufacturing criteria.
Electrical Conductivity
Thermal Conductivity
Machinability
Corrosion Resistance
Formability
Weldability (Brazing)
Strength
Cost Efficiency
Upload your CAD file and get an instant price and delivery date. CNC milling and turning from one part to production.
We CNC mill and turn C110 copper parts that have to carry current or pull heat away.
Bus bars
Terminals and lugs
Electrical connectors
Heat sinks
Switchgear parts
Transformer parts
Grounding electrodes
Contact plates
Custom C110 parts
What people ask most about C110 copper parts: what it is, what ETP means, purity, uses, machining, conductivity, magnetism, corrosion, welding, equivalents, price and tolerances.
C110 copper is chosen for parts that have to carry current or pull heat away: bus bars, terminals, connectors, heat sinks and switchgear and transformer parts.
At PREMSA Industries we machine C110 with CNC milling and turning from your file, from a prototype to production.
C110 is chosen when the part has to carry current or pull heat away.
If your drawing doesn’t specify tolerances, we machine to ISO 2768-m (medium). On dimensions you call out —contact faces, connection holes, center distances and fits— we can hold ±0.025 mm (±0.001 in), and critical dimensions are checked in inspection.
C110 is machined with CNC milling, CNC turning, drilling and tapping. It is soft and gummy, so it is run with very sharp, polished-edge tooling, coolant and a finishing pass to leave contact faces flat and burr-free.
Because it carries current and heat like few metals, C110 is used in many parts made with CNC machining.
C110 is usually the right choice when the part has to carry current or pull heat away and won’t work in vacuum or be brazed in hydrogen.