Pure Copper

High Conductivity Copper Plate, Tube and Bar

Pure copper is a high-purity copper material featuring outstanding electrical and thermal conductivity, excellent corrosion resistance and superior formability.

What is Pure Copper?

Pure copper is a high-purity copper material containing more than 99% copper. It is one of the most widely used non-ferrous metals due to its excellent electrical conductivity, thermal conductivity, corrosion resistance and superior ductility.

Compared with copper alloys, pure copper has higher electrical and thermal conductivity because it contains fewer alloying elements. It is especially suitable for applications where efficient energy transfer, heat dissipation and electrical performance are critical.

Sunny Steel supplies pure copper products in various forms including copper plates, copper sheets, copper tubes, copper bars, copper rods and customized copper components for electrical, industrial and engineering applications.

Main Grades of Pure Copper

Comparison of common Chinese (GB) and equivalent international / ASTM copper grades, with key impurity limits.

China Grade
(GB)		 Int'l Equivalent US Equivalent
(ASTM)		 Cu (≥ %) O (≤ %) P (≤ %)
T1 Cu-ETP C11000 99.95 0.02 0.001
T2 Cu-ETP C11000 99.90 0.06 0.001
TU00 Cu-OF C10100 99.99 0.0005 0.0003
TU0 Cu-OF C10100 99.99 0.001 0.0003
TU1 Cu-OF C10200 99.97 0.003 0.002
TU2 Cu-OF C10300 99.95 0.005 0.002
TP1 Cu-DHP C12000 99.90 0.01 0.004–0.012
TP2 Cu-DHP C12200 99.90 0.01 0.015–0.040
Note: ETP = Electrolytic Tough Pitch; OF = Oxygen-Free; DHP = Phosphorus-Deoxidized, High Residual Phosphorus. P content for TP1/TP2 is a range, not a maximum.

Physical Properties of Pure Copper

Property Typical Value Unit
Density 8.89 g/cm³
Electrical Conductivity 58 - 62 MS/m
Thermal Conductivity 385 - 400 W/m·K
Melting Point 1083 °C
Coefficient of Thermal Expansion 16.5 ×10⁻⁶/K

Mechanical Properties of Pure Copper

Mechanical properties of pure copper depend on manufacturing condition, including annealed, cold worked and heat treated conditions.

Condition Tensile Strength Yield Strength Elongation
Annealed 200 MPa 60 MPa 45%
Half Hard 250 MPa 180 MPa 20%
Hard Temper 350 MPa 300 MPa 5%

Key Features of
Pure Copper

Pure copper provides excellent comprehensive performance and is widely selected for applications requiring high conductivity and corrosion resistance.

  • Excellent Electrical Conductivity: Pure copper has one of the highest electrical conductivity levels among engineering metals.
  • Superior Thermal Conductivity: Efficient heat transfer performance makes it ideal for heat exchangers and cooling systems.
  • Outstanding Corrosion Resistance: Forms a protective oxide layer in many atmospheric and industrial environments.
  • Excellent Ductility: Easy to bend, draw, form and manufacture into complex shapes.
  • Good Weldability: Suitable for various fabrication processes.
  • Recyclability: Copper can be recycled repeatedly without losing performance.

Manufacturing Process of Pure Copper

Pure copper products require strict control of purity, temperature and processing conditions to maintain excellent conductivity and mechanical performance.

  1. Raw Material Selection: High-purity copper cathodes are selected according to required copper grade.
  2. Melting: Copper is melted under controlled atmosphere to reduce contamination.
  3. Casting: Molten copper is cast into billets, slabs or ingots.
  4. Hot Working: Rolling, extrusion or forging processes produce required shapes.
  5. Cold Working: Cold drawing or rolling improves dimensional accuracy and strength.
  6. Annealing: Heat treatment restores ductility and improves material structure.
  7. Final Inspection: Chemical composition, conductivity, dimensions and surface quality are inspected.

Electrical Conductivity of Pure Copper

Pure copper is widely recognized as one of the best electrical conducting materials. Its high conductivity reduces power losses and improves energy efficiency in electrical systems.

Thermal Conductivity Performance

Pure copper has outstanding thermal conductivity, allowing rapid heat transfer and efficient thermal management.

Material Thermal Conductivity (W/m·K) Application
Pure Copper 385 - 400 Heat exchangers and cooling systems
Aluminum 200 - 240 Lightweight heat dissipation
Stainless Steel 15 - 25 Corrosion resistant structures
Carbon Steel 45 - 60 General engineering applications
Aluminium Bronze tube
Standard Products

Pure Copper

National, industry and international standards we comply with.

Standard System Standard Code Scope
National (GB/T) GB/T 5231-2012 Chemical composition of copper & copper alloys
GB/T 4423-2007 Copper & copper alloy rods and wires
GB/T 1527-2006 Copper & copper alloy tubes
GB/T 2040-2002 Copper & copper alloy plates and strips
Industry (YS/T) YS/T 584-2006 Aluminium bronze rods and bars
YS/T 649-2007 Aluminium bronze tubes
YS/T 662-2007 Aluminium bronze plates
USA (ASTM) ASTM Series American standard specifications
Europe (DIN) DIN Series German standard specifications

Full compliance with Chinese National (GB/T), Industry (YS/T), ASTM and DIN standards.

Pure Copper Compared with Other Metals

Material Electrical Conductivity Thermal Conductivity Corrosion Resistance
Pure Copper Excellent Excellent Good
Aluminum Medium Good Good
Brass Lower than copper Medium Good
Stainless Steel Low Low Excellent

Machining and Fabrication of Pure Copper

Pure copper has excellent formability and can be processed by cutting, bending, drawing, welding and brazing.

Quality Control and Testing

Each pure copper product is inspected according to customer requirements to ensure reliable performance.

Inspection Item Testing Method Purpose
Chemical Composition Spark Spectrometer Analysis Confirm copper purity and grade
Electrical Conductivity Conductivity Meter Verify electrical performance
Mechanical Properties Tensile and Hardness Test Confirm strength requirements
Dimension Inspection Precision Measurement Ensure manufacturing accuracy
Frequently Asked Questions
Pure copper is a high-purity copper material containing more than 99% copper. It features excellent electrical conductivity, thermal conductivity, corrosion resistance and outstanding ductility, making it widely used in electrical and industrial applications.
Common pure copper grades include C10100 oxygen-free copper, C10200 oxygen-free copper and C11000 electrolytic tough pitch copper (ETP copper). Different grades are selected according to conductivity, oxygen content and application requirements.
C11000 electrolytic tough pitch copper contains a small amount of oxygen and provides excellent electrical conductivity for general applications. Oxygen-free copper such as C10100 and C10200 has extremely low oxygen content and is preferred for semiconductor, vacuum and high-purity applications.
Pure copper has excellent electrical conductivity, typically around 100% IACS or higher depending on grade and purity. This makes it one of the preferred materials for electrical power transmission and electronic components.
Pure copper has a thermal conductivity of approximately 385-400 W/m·K, allowing rapid heat transfer. It is widely used in heat exchangers, cooling systems and thermal management equipment.
We can supply pure copper plates, sheets, tubes, bars, rods, wires and customized copper components according to customer drawings, dimensions and technical specifications.
Pure copper is widely used in electrical power, semiconductor manufacturing, refrigeration, heat exchangers, chemical equipment, construction, automotive and renewable energy industries.
Yes. Pure copper has good corrosion resistance and forms a protective oxide layer on its surface. It performs particularly well in atmospheric, water and many industrial environments.
Yes. Due to its excellent thermal conductivity and corrosion resistance, pure copper tubes and plates are commonly used in heat exchangers, condensers, refrigeration systems and cooling equipment.
Yes. Pure copper has excellent ductility and can be processed by welding, brazing, bending, drawing and machining. Proper welding procedures should be selected according to product grade and thickness.
Pure copper has higher electrical conductivity and thermal conductivity than aluminum, while aluminum has lower density and lighter weight. Copper is preferred where conductivity and reliability are the priority.
Pure copper provides the highest conductivity and thermal performance, while copper alloys such as brass and bronze provide improved strength, hardness and wear resistance through alloying elements.
Yes. Oxygen-free copper has extremely low oxygen content and excellent purity, making it suitable for semiconductor equipment, vacuum systems and high-frequency electronic applications.
Yes. Material certificates including chemical composition analysis, mechanical properties, conductivity test results and dimensional inspection reports can be provided according to customer requirements.
Yes. We provide customized pure copper products according to customer drawings, including special dimensions, surface conditions, temper requirements and machining specifications.
Delivery time depends on product type, quantity and customization requirements. Standard copper plates, tubes and bars can usually be supplied quickly, while customized products require additional manufacturing time.

Standard Products — Pure Copper

Mechanical properties of commonly supplied pure copper grades in bar and tube form. Values are typical ranges unless otherwise noted.

Grade Form Condition Size Range (mm) Tensile Strength
(MPa)		 Elongation
A (%)		 Brinell
Hardness (HB)
T1 Bar R Φ5–40 195–270 ≥ 35 —
Tube M ≥Φ15 × (2–15) 185–235 ≥ 42 —
T2 Bar R Φ5–40 195–270 ≥ 35 —
Tube M ≥Φ15 × (2–15) 185–235 ≥ 42 —
TU00 / TU0 Bar Y Φ5–40 275–360 ≥ 6 80–110
M2 Φ5–40 195–270 ≥ 35 —
Tube Y ≥Φ15 × (2–15) 275–360 ≥ 6 80–110
M ≥Φ15 × (2–15) 185–235 ≥ 42 —
TU1 / TU2 Bar Y2 Φ5–40 245–325 ≥ 12 70–100
R Φ5–40 195–270 ≥ 35 —
Tube Y2 ≥Φ15 × (2–15) 245–325 ≥ 12 70–100
M2 ≥Φ15 × (2–15) 185–235 ≥ 42 —
TP1 / TP2 Bar Y2 Φ5–40 245–325 ≥ 12 70–100
R Φ5–40 195–270 ≥ 35 —
Tube Y2 ≥Φ15 × (2–15) 245–325 ≥ 12 70–100
M ≥Φ15 × (2–15) 185–235 ≥ 42 —

Notes: R = as-rolled / hot-worked; M = soft annealed; M2 = soft (special anneal); Y = hard (cold-worked); Y2 = half-hard. Size format: Φdiameter for bar; ΦOD × wall thickness for tube. "—" indicates not specified. Refer to GB/T 4423-2007 for exact limits.

Iridium Unique Properties

A range of Pure Copper Shapes

Sunny Steel supplies Pure Copper materials in various forms to meet different industrial manufacturing requirements.

Pure Copper Tube

Pure Copper Rod

Pure Copper Plate

Pure Copper Coil

Pure Copper Foil

Pure Copper Sheet

Pure Copper Bar

Pure Copper Components

Pure Copper Wire

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