When Do Buyers Actually Choose C11000 Copper Bar?

In many industrial projects, buyers do not automatically choose the cheapest copper material. The decision often depends on one question:

Does conductivity performance matter more than fabrication flexibility?

If the answer is yes, C11000 Copper Bar is usually one of the first materials considered.

Known as Electrolytic Tough Pitch (ETP) Copper, C11000 contains 99.90% minimum copper content and is widely selected for electrical systems where current transfer efficiency cannot be compromised.

For example, manufacturers producing busbars, transformer components, switchgear connectors, grounding systems, and conductive machined parts often prefer C11000 because even small conductivity differences may affect long-term operating performance.

Compared with phosphorus-deoxidized grades like C12000, C11000 is less about welding convenience and more about maintaining stable electrical performance.

Product Details

Who Actually Buys C11000

Most buyers of C11000 copper bar are not general metal shops. They are:

Busbar manufacturers
Switchgear and panel builders
Transformer component suppliers
Grounding system fabricators
Power distribution equipment makers

These customers rarely weld or braze C11000. They bolt, crimp, clamp, or machine it.

Specifications and Technical Details

Basic Product Information

Item	Details
Material Grade	C11000 Copper
Material Type	Electrolytic Tough Pitch Copper (ETP Copper)
Diameter Range	5 mm – 600 mm
Temper	Soft Annealed (O)/Half Hard (H02)/Hard (H04)
Length	500mm – 5000mm
Surface Finish	Bright / Mill Finish / Machined Surface
Lead Time	In-stock goods: 3–7 working daysCustom processed orders: 10–20 working days
Packaging	Standard export packing: Bundled with steel straps + plastic wrapping; Large pieces with wooden crates/pallets. Fully protected against scratch, oxidation and moisture for long-distance sea/land transportation.

Mechanical Properties (Typical Values)

Property	Value
Tensile Strength	Soft Annealed (O)：200 – 250Mpa Half Hard (H02)：255 – 315Mpa Hard (H04)：295 – 360Mpa
Yield Strength(0.2% Offset)	Soft Annealed (O)：30 – 50Mpa Half Hard (H02)：170 – 280Mpa Hard (H04)：240 – 330Mpa
Elongation	Soft Annealed (O)：45% – 55% Half Hard (H02)：≥ 15% Hard (H04)：5% – 10%
Hardness (HB)	Soft Annealed (O)：35 – 45 Half Hard (H02)：65 – 85 Hard (H04)：80 – 100

Chemical Composition (Typical %)

Element	Content
Copper (Cu + Ag)	≥ 99.90
Oxygen (O)	Approx. 0.02 – 0.04

Key Features and Practical Considerations

Conductivity Usually Matters More Than Strength

For buyers purchasing C11000 Copper Bar, mechanical strength is often not the first concern.

In electrical applications, conductivity loss is usually a bigger issue than hardness. Materials with lower conductivity may generate more resistance, which can affect efficiency or increase heat generation during operation.

Because C11000 copper bar typically provides 100% IACS conductivity, it is commonly selected for components where current transfer efficiency matters, such as:

Busbars
Electrical terminals
Grounding conductors
Switchgear components

In these situations, conductivity stability is often more important than higher mechanical strength.

Pure Copper Machines Differently From Steel

Some customers using C11000 copper bar for CNC machining notice that copper behaves differently compared with carbon steel or brass.

Because copper is softer, improper machining parameters may lead to:

Material sticking to cutting tools
Surface scratching
Burr formation

For machined conductive components, buyers often discuss temper condition beforehand to improve processing efficiency.

Heat Dissipation is Another Reason Buyers Choose C11000

In some industrial applications, customers select C11000 Copper Bar not only for conductivity but also for heat transfer.

Because copper transfers heat efficiently, it is often used for:

Heat-conductive components
Electrical cooling systems
Transformer parts
Thermal conductive assemblies

In these situations, thermal performance may be just as important as electrical conductivity.

Applications

C11000 Copper Bar is commonly used for:

Electrical busbars (flat bar, rectangular)
Switchboard components
Transformer terminals and connectors
Grounding conductors
Power distribution blocks
High-current electrical hardware

Compared with other copper grades, C11000 Copper Bar is generally chosen where conductivity performance takes priority.

Our Strengths

We supply copper alloys, stainless steel, nickel alloys, carbon steel, and engineering materials to industrial customers and export markets.

For C11000 Copper Bar, we understand that many customers care more about conductivity consistency, dimensional accuracy, and delivery reliability than simply comparing price per kilogram.

We support:

Custom cutting lengths
Mixed size orders
Busbar and flat bar requirements
Export packaging solutions
Material traceability and MTC documentation

For overseas customers, we also coordinate packaging and shipment arrangements to reduce damage risk during transport and help materials move directly into production after arrival.