What is C11000 copper?
C11000 ETP (Electronic Tough Pitch) Copper is one of the most popular copper alloys. C110 is basically pure copper with a 99.9% copper composition. 110 Copper is used in a wide variety of applications in a number of industries. It is utilized due to its high electrical conductivity (100% IAS) and its range of fabrication methods. C11000 ETP Copper can be bent, soldered, drilled, peened, rivited and formed. It is not a good machining metal with a machinability rating of 20. C110 also has a high thermal conductivity.
Is C11000 copper the same as C110?
Yes, C11000 copper is the same as "C110."
This is purely a naming convention difference, with no distinction in the material itself. Here's a quick breakdown:
| Term | What It Is | Context |
|---|---|---|
| C11000 | The official, full designation in the Unified Numbering System (UNS). | Used in formal technical documents, material certifications (mill test reports), and international procurement to ensure precision. |
| C110 | The common industry shorthand. | Universally understood in everyday conversation, sales catalogs, and informal specifications within the metals and manufacturing industries. |
Copper 110/C110/C11000 Electrolytic Tough Pitch (ETP)
Chemical Composition (By Weight %)
This table outlines the primary chemical requirements for C11000 per ASTM standards.
| Element | Minimum (%) | Maximum (%) | Notes |
|---|---|---|---|
| Copper + Silver (Cu+Ag) | 99.90 | 99.96 | Defines base purity. |
| Oxygen (O) | 0.02 | 0.04 | Defining characteristic of ETP copper. |
| Lead (Pb) | - | 0.001 | |
| Iron (Fe) | - | 0.002 | |
| Antimony (Sb) | - | 0.0004 | |
| Sulfur (S) | - | 0.002 | |
| Others (Total) | - | 0.02 | Includes elements like Se, Te, Bi, etc. |
Physical Properties
These are typical values at 20°C (68°F).
| Property | Value | Condition / Notes |
|---|---|---|
| Electrical Conductivity | 100 - 101 % IACS | Annealed temper; benchmark value. |
| Electrical Resistivity | 1.7241 μΩ·cm | At 20°C. |
| Thermal Conductivity | 388 - 391 W/m·K | |
| Melting Point | 1082.5 - 1083°C | 1980 - 1981°F |
| Density | 8.89 - 8.94 g/cm³ | 0.321 - 0.323 lb/in³ |
| Coefficient of Thermal Expansion | 17.0 × 10⁻⁶ /K | 20 - 300°C range. |
Mechanical Properties
Properties vary significantly with temper (condition). This table shows key tempers per ASTM B152 (sheet/plate/strip).
| Property / Temper | Soft / Annealed (O60) | Half Hard (H02) | Hard (H04) | Spring (H08) |
|---|---|---|---|---|
| Tensile Strength (min) | 32 ksi (221 MPa) | 36 ksi (248 MPa) | 38 ksi (262 MPa) | 42 ksi (290 MPa) |
| Yield Strength (0.2% Offset, min) | 10 ksi (69 MPa) | 30 ksi (207 MPa) | 34 ksi (234 MPa) | 40 ksi (276 MPa) |
| Elongation (in 2 in or 50 mm, min) | 35% | 15% | 8% | 3% |
| Hardness (Rockwell F, typical) | 40 - 60 HRF | 65 - 75 HRF | 80 - 90 HRF | > 90 HRF |
| Key Characteristic | Maximum ductility/formability. | Good balance of strength/formability. | Higher strength, less ductile. | High stiffness/spring quality. |
UNS C11000 Seamless Tube Size Chart
| Nominal Tube Size (in) | Outer Diameter (OD) | Wall Thickness | ||
|---|---|---|---|---|
| Millimeter (mm) | Inch (in) (Approx.) | Millimeter (mm) | BWG Gauge | |
| 1/8 | 3.18 | 0.125 | 0.41, 0.51, 0.71 | 27, 26, 24 |
| 1/4 | 6.35 | 0.250 | 0.51, 0.71, 0.89 | 26, 24, 22 |
| 3/8 | 9.53 | 0.375 | 0.71, 0.89, 1.07 | 24, 22, 20 |
| 1/2 | 12.70 | 0.500 | 0.89, 1.07, 1.24 | 22, 20, 19 |
| 5/8 | 15.88 | 0.625 | 0.89, 1.07, 1.24 | 22, 20, 19 |
| 3/4 | 19.05 | 0.750 | 1.07, 1.24, 1.47 | 20, 19, 18 |
| 1 | 25.40 | 1.000 | 1.24, 1.47, 1.83 | 19, 18, 16 |
| 1 1/4 | 31.75 | 1.250 | 1.47, 1.65, 2.11 | 18, 17, 14 |
| 1 1/2 | 38.10 | 1.500 | 1.65, 1.83, 2.11 | 17, 16, 14 |
| 2 | 50.80 | 2.000 | 1.83, 2.11, 2.41 | 16, 14, 13 |
Equivalent Grade Chart Of C11000 Copper Tubing
| Region / Standard | Equivalent Designation | Common Name / Standard |
|---|---|---|
| International / ISO | Cu-ETP | ISO 431: 1981 (Copper - Cathodes) |
| European Union / EN | CW003A / CW004A | EN 1976: 1998 (Copper - Cathodes) |
| Japan / JIS | C1100 | JIS H3100 (General Purpose Copper Sheets/Plates/Strips) |
| Germany / DIN | 2.0060 (Material Number) | DIN 1787 & EN 13599 |
| China / GB | T2 | GB/T 5231 |
| United Kingdom / BS | C101 | BS 2874 (Copper Tubes for Water, Gas and Sanitation) |
Available Forms of C11000 Copper
| Form | Standard Examples (ASTM) | Typical Applications |
|---|---|---|
| Sheets, Plates & Strips | ASTM B152 (Sheet/Plate), B370 (Sheet/Strip) | Busbars, electrical contacts, switchgear components, decorative panels. |
| Tubes & Pipes | ASTM B75 (Seamless General Purpose), B88 (Water Tube), B280 (Refrigeration) | Plumbing, HVAC systems, heat exchangers, condensers, industrial fluid lines. |
| Rods, Bars & Wires | ASTM B187 (Bus Bar/Rod), B133 (Rod/Bar), B1 (Hard-Drawn Wire) | Fasteners, machined parts, connectors, screws, rivets, electrical windings. |
| Forging Rods & Billets | ASTM B124 (Rod/Bar for Forging) | Forged electrical fittings, valves, high-strength mechanical components. |
| Coiled Tubes & Strips | - (Custom supply from mills) | Continuous production lines for heat exchangers, cable sheathing, flexible connectors. |
| Custom CNC Machined Parts | - (Per customer drawing) | Precise electrical contacts, terminals, heat sinks, waveguide components, custom fixtures. |
C11000 VS Other grades
1. C11000 vs. C10100 (OFE)
Critical Difference: Oxygen Content & Resulting Reliability
C11000 contains controlled oxygen, making it susceptible to hydrogen embrittlement in reducing atmospheres. C10100 is oxygen-free, making it mandatory for high-vacuum electronics, semiconductor fabrication, and hydrogen-rich environments where failure is not an option.
2. C11000 vs. C12200 (DHP)
Critical Difference: Deoxidizer & Weldability
C11000 is "tough pitch" with oxygen present. C12200 is phosphorus-deoxidized, which removes oxygen. This allows C12200 to be brazed and welded without risk of embrittlement, making it the standard for plumbing, refrigeration lines, and fuel gas systems.
3. C11000 vs. C14500 / C18700 (Free-Cutting)
Critical Difference: Machinability vs. Conductivity
C11000 is pure and "gummy," leading to poor chip formation and shorter tool life. C14500 (with tellurium) and C18700 (with lead) are free-machining alloys. They sacrifice a small amount of conductivity for drastically improved machinability, lower production cost, and better surface finish in CNC-turned or milled parts.
4. C11000 vs. C22000 (Commercial Bronze)
Critical Difference: Conductivity vs. Cost/Formability
C11000 is a high-conductivity (100% IACS), high-purity copper. C22000 is a 90% copper alloy with zinc. It has significantly lower electrical conductivity but is stronger, more corrosion-resistant for certain atmospheres, and often cheaper. It is used where conductivity is secondary, such as in architectural, decorative, or some low-current hardware applications.
Product Forms We Can Provide
| Product Category | Material Standards | Common Alloys | Key Specifications (Can be Customized) |
|---|---|---|---|
| Copper Tubes | ASTM B75, B88, B280,B111; EN 12449, 12451; DIN EN 12735; JIS H3300 | C10100 (OFE), C11000 (ETP), C12200 (DHP), C23000, C70600,C71500 | OD: 3mm - 300mm Wall Thickness: 0.5mm - 20mm Temper: Soft (O), Half-Hard (H50), Hard (H80) Form: Straight Lengths, Coils, U-Bends |
| Copper Sheets / Plates | ASTM B152, B248, B248M; EN 1652; DIN 1787; JIS H3100, H3250 | C10100 (OFE), C11000, C10200 (OF), C26000, C86200 | Thickness: 0.3mm - 100mm Width: Up to 1200mm Length: Up to 3000mm (or coils) Surface: Mill, Polished, Brushed |
| Copper Rods / Bars | ASTM B187, B301, B411; EN 12163, 12164; DIN 17672; JIS H3250 | C10100 (OFE), C11000, C14500, C36000, C63000 | Diameter/Rect. Size: 3mm - 300mm Shape: Round, Square, Hexagonal, Rectangular Condition: Drawn, Extruded, Hot Rolled |
| Copper Wires | ASTM B1, B2, B3, B258; EN 13601; IEC 60228; JIS H3100 | C10100 (OFE), C11000, C14420, C14500 | Diameter: 0.1mm - 20mm Temper: Soft, Annealed, Hard-Drawn Form: Bare, Tinned, Stranded, on Spools |
| Copper Foils / Strips | ASTM B103, B370; EN 1652; DIN 1787; JIS H3100 | C10100 (OFE), C10200, C11000, C19400, C26800 | Thickness: 0.02mm - 2.0mm Width: Up to 600mm Temper: Rolled, Annealed |
| CNC Machining Parts | As per Customer Drawing/Req. | All Common Copper Alloys (including C10100, C11000, C86200, etc.) | Process: Turning, Milling, Drilling, Tapping Tolerance: ±0.005mm - ±0.1mm Post-Processing: Deburring, Polishing, Plating |
