UNS C11000 Electrolytic Tough Pitch Copper (ETP Copper) is one of the most widely used high-conductivity copper alloys, known for its excellent electrical conductivity (≥100% IACS), thermal conductivity, ductility, and ease of fabrication. As a premium industrial-grade copper material, C11000 copper sheet, copper strip, copper rod, copper bar, copper tube, and copper busbar are extensively used in electrical engineering, transformers, switchgear, power distribution, grounding systems, and precision components. Our factory offers custom sizes, tight tolerances, international standards, and export packaging, ensuring stable quality for global B2B buyers.
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Products Description
UNS C11000 is an electrolytic tough pitch copper alloy containing a controlled amount of oxygen (0.02–0.04%) to ensure superior electrical conductivity. It complies with ASTM B152, ASTM B187, ASTM B152M, ASTM B193, ASTM B152M and other international standards.
UNS C11000 Copper Alloy – Full Integrated Technical Comparison Table
| Category | Technical Parameter | Metric (SI Units) | Imperial (US Units) | Notes / Standard |
|---|---|---|---|---|
| Chemical Composition | Cu (Copper) | ≥ 99.90% | - | ASTM B152 / B187 |
| Oxygen (O) | 0.02–0.04% | - | Typical ETP Cu | |
| Other impurities | ≤ 0.03% | - | - | |
| Mechanical Properties – Annealed (O Temper) | Tensile Strength | 210–250 MPa | 30–36 ksi | ASTM B152 |
| Yield Strength | 65–100 MPa | 9–14 ksi | - | |
| Elongation | 30–45% | - | - | |
| Mechanical Properties – Hard (H04 Temper) | Tensile Strength | 340–380 MPa | 49–55 ksi | ASTM B187 |
| Yield Strength | 300–340 MPa | 44–49 ksi | - | |
| Hardness | HV 80–110 | HRB 40–55 | - | |
| Physical Properties | Conductivity | ≥ 100% IACS | - | Electrolytic tough pitch |
| Density | 8.9 g/cm³ | 0.321 lb/in³ | - | |
| Melting Point | 1083°C | 1981°F | - | |
| Standard Size Range – Sheets / Plates (ASTM B152) | Thickness | 0.20–20 mm | 0.008"–0.79" | Std. tolerances ±0.01–0.20 mm |
| Width | 300–1000 mm | 12"–40" | - | |
| Length | 1000–3000 mm | 40"–120" | - | |
| Standard Size Range – Rods / Bars (ASTM B187) | Diameter | 3–120 mm | 1/8"–4.75" | Tolerance ±0.03–0.20 mm |
| Temper available | O / H02 / H04 | - | - | |
| Standard Size Range – Busbars (Flat Bars) | Thickness | 3–20 mm | 0.12"–0.75" | - |
| Width | 20–200 mm | 0.8"–8" | - | |
| Standard Size Range – Tubes (ASTM B68 / B75) | Outside Diameter (OD) | 6–108 mm | 1/4"–4.25" | - |
| Wall Thickness | 0.5–10 mm | 0.02"–0.40" | Std. tolerance ±0.02–0.15 mm | |
| Temper | O / H58 | - | Seamless copper tube | |
| Key Features | - | High conductivity, corrosion resistance, ductility | - | Electrical-grade copper alloy |
| Typical Applications | - | Busbars, transformers, switchgear, electrical contacts, plumbing | - | Industry standard |
C11000 vs C10200 vs C12200 Copper Alloys
| Category | C11000 (ETP Copper) | C10200 (OFHC Copper) | C12200 (DHP Copper) |
|---|---|---|---|
| Material Name | Electrolytic Tough Pitch Copper | Oxygen-Free High Conductivity Copper | Phosphorus-Deoxidized Copper |
| UNS Number | C11000 | C10200 | C12200 |
| Common Names | ETP Copper, Tough Pitch Copper | OFHC Copper, Oxygen-Free Copper | DHP Copper, Deoxidized Copper |
| Chemical Composition | Cu: ≥ 99.90% • O: 0.02–0.04% | Cu: ≥ 99.95% • O: ≤ 0.001% | Cu: ≥ 99.90% • P: 0.015–0.040% |
| Electrical Conductivity | 100% IACS | 101–102% IACS (最高) | 85–90% IACS |
| Thermal Conductivity | Excellent | Excellent (略优) | Very Good |
| Tensile Strength (O Temper) | 210–250 MPa | 200–240 MPa | 200–240 MPa |
| Tensile Strength (Hard) | 340–380 MPa | 330–370 MPa | 300–360 MPa |
| Yield Strength (O Temper) | 65–100 MPa | 60–95 MPa | 60–100 MPa |
| Elongation (O Temper) | 30–45% | 30–45% | 30–45% |
| Corrosion Resistance | Very Good | Very Good | Excellent (最适合管路) |
| Hydrogen Embrittlement Resistance | Poor (氧化物导致) | Excellent | Excellent |
| Weldability (Brazing / Welding) | Medium | Medium–Good | Excellent(无氢脆风险) |
| Formability | Excellent | Excellent | Excellent |
| Suitable for High-Vacuum Use | ❌ 否 | ✔ 最佳 | ✔ |
| Oxygen Content | 200–400 ppm | < 10 ppm | None (P removes O) |
| Phosphorus Content | - | - | 150–400 ppm |
| Best Strength Category | High Electrical Performance | Highest Purity Copper | Best Weldability Tubing |
| Primary Advantages | Standard electrical copper | Ultra-high purity & conductivity | Brazing & welding without embrittlement |
| Limitations | Can suffer hydrogen embrittlement | Higher cost | Lower conductivity |
| Typical Product Forms | Sheets, plates, rods, busbars, wires, tubes | High-purity rods, wires, vacuum components | Copper tubes (ACR/HVAC), plumbing pipes |
| Typical Applications | Busbars, electrical contacts, transformers | Semiconductors, vacuum devices, high-end electronics | HVAC tubing, heat exchangers, plumbing, engineering tubes |
| ASTM Standards | B152, B187, B68, B75 | B152, B187 | B111, B306, B280 |
| Cost Level | Standard (Medium) | Highest | Lowest among three |
Key Features of UNS C11000
≥100% IACS electrical conductivity
Excellent heat conductivity
Outstanding ductility & formability
Easy to weld, braze, solder
Non-magnetic, high corrosion resistance
Superior surface finish
Ideal for electrical and thermal conduction systems
Products Applications
UNS C11000 is widely used in:
Electrical busbars & grounding bars
Transformer & switchgear components
Power distribution equipment
Electrical contacts & connectors
Electronic terminals & PCBs
Plumbing tubes & HVAC components
Heat exchangers and condensers
Precision stamped copper parts
Need C11000 copper sheets, strips, coils, tubes, rods, or busbars?
We support OEM customization, fast delivery, and global shipping.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
Professional FAQ for Copper Alloys (C11000 / C10200 / C12200)
1. What are the key differences between C11000, C10200, and C12200 in industrial use?
C10200: Highest purity & conductivity (Semiconductor, vacuum, high-end electronics)
C11000: Standard electrical-grade copper for busbars, power equipment
C12200: Best weldability and corrosion resistance for HVAC, plumbing, heat exchangers
2. Which grade is most suitable for electrical power distribution systems?
C11000 ETP Copper (≥100% IACS) is the industry standard for:
Busbars
Transformer components
Switchgear parts
Grounding systems
C10200 can also be used when extra high conductivity is required.
3. Which copper grade is recommended for brazed or welded piping systems?
C12200 (DHP Copper) is ideal because phosphorus removes oxygen, preventing hydrogen embrittlement.
It is the global standard for:
HVAC tubing
ACR tubes
Heat exchanger coils
Plumbing systems (cold & hot water)
4. Do you provide both metric and imperial dimensions?
Yes. We supply:
mm / inches
Standard tolerances per ASTM
Custom tolerances upon request
OEM fabrication available for coils, sheets, plates, tubes, rods, busbars
5. What international standards do your copper alloys meet?
Depending on product type:
ASTM B152 – Copper sheets and plates
ASTM B187 – Rods and bars
ASTM B68 / B75 – Seamless copper tubes
ASTM B111 / B280 – DHP copper tubes
ASTM B170 – Oxygen-free copper
ISO, EN, JIS equivalents can be provided as needed.
6. Can you provide mill test certificates (MTC) and third-party inspections?
Yes. We provide:
EN 10204 3.1 MTC
Chemical composition (spectrometer)
Mechanical properties report
Eddy current & ultrasonic testing for tubes
SGS / BV / TUV 3rd-party inspection available
7. What is your quality assurance process for copper alloy products?
Our QA system includes:
Incoming raw material verification
Online dimension monitoring
Hardness & tensile testing
Surface roughness inspection
Conductivity testing for C10200 / C11000
Weldability & flattening tests for C12200 tubes
100% eddy current test for seamless pipes
Complies with ISO 9001, ISO 14001, ISO 45001.
8. What is the typical lead time for copper alloy orders?
Stock sizes: 3–7 days
Customized sizes: 10–20 days
Large-volume or precision machining: 20–30 days
Urgent orders can be arranged with priority scheduling.
9. What packaging options do you offer for export shipments?
Export-grade packaging includes:
Moisture-proof kraft paper
PVC protective film (for polished copper)
Fumigation-free wooden pallets or crates
Steel strip reinforcement
Customized pallet height for container loading efficiency
Suitable for sea freight, air freight, and consolidation.
10. Can you supply copper coils or processed parts for mass production?
Yes. We support:
Coil slitting
Precision cutting (sheet/strip/bar/tube)
CNC machining
Bending, punching
Finishing (polishing, pickling, tin plating)
OEM & ODM services available.
11. What surface conditions are available for copper sheets, strips, and tubes?
Mill finish
Bright annealed
Polished surface
Tin-coated
Non-oxidized surface for electrical applications
Protective film (one side or both sides)
12. Can you guarantee conductivity for electrical-grade copper?
Yes. We provide:
≥100% IACS for C11000
101–102% IACS for C10200
Conductivity test report included in MTC
13. Do you offer customized chemical composition control for special industries?
Yes. For semiconductor, aerospace, and precision electronics:
Ultra-low residual elements
Additional impurity control (Bi, Pb, S, Fe)
Ultra-high conductivity requirements
14. What is your minimum order quantity (MOQ)?
Sheets / plates / bars: 300–500 kg
Coils: 1 roll (depending on thickness)
Tubes: 300–500 kg
Sample orders are supported for engineering validation.
15. What documentation can be provided for customs clearance and project approval?
Commercial Invoice
Packing List
Certificate of Origin (CO, Form E, Form F, etc.)
EN 10204 3.1 Certificate
HS Code classification
Third-party inspection report (SGS/BV/TUV)
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