What is C1100 Copper strip?
C1100 copper strip is a strip or sheet in coil, roll product with a minimum copper content of 99.9%. Thanks to its high copper purity, C1100 copper exhibits superior electrical and thermal conductivity and excellent corrosion resistance. These properties make it an ideal material for electrical applications and various uses across industrial and residential sectors.
- Alloy grade: C1100 according to JIS (Japanese Industrial Standards).
- International standard: ASTM C1100.
- Form and specifications:
- Strip form:
- Thickness: 0.2 – 10 mm.
- Width: 6 – 450 mm.
- Strip form:
- Equivalent copper grades:
- T11050 (ISC – CN)
- T2 (GB – CN)
- ECu-57 (DIN – GE)
- Cu-FRHC (NF – FR)
- М1 (GOST – RU)

Chemical Composition of C1100 Copper Sheet
According to ASTM C1100 standards, C1100 copper strip is nearly entirely pure copper:
- Copper (Cu): 99.96% ~ 99.99%.
- Aluminum (Al), Iron (Fe), Nickel (Ni), Manganese (Mn): Negligible.
Physical and Mechanical Properties of C1100 Copper Sheet
Property | Value |
---|---|
Tensile strength (Mpa) | 195 ~ 345 |
Elongation (%) | 35 ~ 15 |
Hardness (HBW, HV) | 60 ~ 100 |
Density (kg/cm³) | 8.94 |
Thermal expansion coefficient (10⁶/K) | 17.7 (20 ~ 300°C) |
Thermal conductivity (W/m·K) | 391 (at 20°C) |
Electrical resistivity (µΩ·m) | 0.0171 |
Electrical conductivity (% IACS) | 101 |
Elastic modulus (kN/mm²) | 118 |
Applications of C1100 Copper Strip in Industry and Residential Use
C1100 copper strip, with its excellent physical and chemical properties, finds extensive application in various fields.
- Electrical and Electronics Industry:
- Busbars.
- Electrical equipment supports.
- Transformer windings.
- Electrodes for batteries and accumulators.
- Construction Industry:
- Components for water pipes and faucets.
- Architectural materials with superior corrosion resistance.
- Mechanical Industry:
- Heating machinery.
- Gaskets and sealing rings.
Key Features of C1100 Copper Sheet
Some grades of C1100 copper strip can be referred to as “Oxygen-Free Copper,” with the following standout advantages:
- Corrosion resistance and durability under extreme weather conditions.
- No hydrogen embrittlement, even at high temperatures.
- Natural patina (green layer) development over time, which is non-toxic to humans.

Dulico – Leading Supplier of C1100 Copper Coils in Vietnam
Dulico is proud to be a pioneer in supplying C1100 copper strip in Vietnam. With a production process and product quality that meet international standards, Dulico is committed to providing manufacturing and construction businesses with the best quality products at competitive prices.
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To receive a quotation and detailed consultation on products and technical specifications, please contact:
Mr. Doan Thanh Tung (David) International Sales 📞+84 975 441 115 ✉️ tung.doan@dulico.vn | Ms. Trinh Ngoc Khue (Lucy) International Sales 📞+84 984 805 505 ✉️ lucy@dulico.vn | Mr. Nguyen Trong Duy (LEO) Director ✉️ duy.nguyen@dulico.vn |