Difference Between C1100 And Cu-ETP Purple Copper

Comparison analysis of C1100 and Cu-ETP purple copper
1. Material standard

C1100 copper-etp:

Conforms to the Chinese standard GB/T 14953-1994, corresponding to the international grade including the American standard C11000, Japanese standard C1100.

Cu-ETP copper:

Conforms to European standard EN/1652:1997 (brand number CW004A), corresponding to the national standard T2, American standard C11000, Japanese standard C1100.

2. Chemical composition

Composition

C1100 copper

Cu-ETP copper

Copper content Cu + Ag ≥ 99.90% Cu ≥ 99.90%

Impurity control Zn, Pb, Ni, Fe, etc. ≤ 0.005% Bi ≤ 0.0005%, O ≤ 0.040%, Pb ≤ 0.005%, and the sum of other elements ≤ 0.03%.

Key difference: Cu-ETP has a stricter control of bismuth (Bi) and oxygen (O), respectively ≤0.0005% and ≤0.040%, while C1100 has a stricter control of other impurities (e.g., Zn, Pb, Ni, Fe), which are all ≤0.005%.

3. Mechanical properties

Properties

C1100 Copper

Cu-ETP copper

Tensile strength ≥380 MPa (wire), 200-235 MPa (plate) 200-250 MPa (plate), ≥210-275 MPa (bar)

Elongation ≥5% (δ10), ≥10% (δ5) ≥30% (thickness >2.5mm), ≥10-16% (bar)

Hardness No specific value provided 40-65 (plate), 70-120 (bar)

Key differences: C1100 has slightly higher tensile strength than Cu-ETP, but Cu-ETP has a wider range of elongation and hardness and is more adaptable.

4. Physical Properties

Properties

C1100 Purple Copper

Cu-ETP copper

Density Not provided (Violet copper is usually 8.96 g/cm³) 8.9 g/cm³

Conductivity not available (usually around 58 MS/m for copper violet) 57.0 MS/m (98.3% IACS)

Thermal conductivity Not provided (usually around 390 W/(m-K) for purple copper) Not provided (usually around 390 W/(m-K) for purple copper)

Key differences: The electrical conductivity of Cu-ETP is clearly labeled as 57.0 MS/m (98.3% IACS), while no specific value is provided for C1100, but both have similar thermal conductivity.

5. Areas of application

C1100 copper violet:

Electrical and electronic: wires, cables, electronic components, electrical equipment.

Construction: pipes, valves, decorative materials.

Machinery manufacturing: precision parts, molds.

Aerospace: aircraft engine blades, high-voltage transmission line conductors.

Cu-ETP copper:

Electrical and electronic: wires, cables, brushes, EDM-specific galvanic copper.

Chemical industry: evaporator, storage, piping.

Machinery manufacturing: demanding workpieces and equipment.

Decoration: doors, windows, handrails and other furniture and decoration.

Key differences: C1100 is more commonly used in construction and machinery manufacturing, while Cu-ETP has more applications in chemical and decorative fields.

6. Summary of Key Differences

Characteristics

C1100 Copper

Cu-ETP Copper

Purity Cu+Ag≥99.90% Cu≥99.90%, with stricter control of impurities (e.g. Bi≤0.0005%)

Mechanical properties slightly higher tensile strength, elongation and hardness range is wider

Application areas Construction, machinery manufacturing chemical industry, decoration

Standard GB/T 14953-1994 EN/1652:1997

Suggestions for selection

Priority to C1100: if higher tensile strength is needed, or used in construction, machinery manufacturing.

Cu-ETP is preferred: if stricter impurity control (e.g. bismuth content) is required, or for use in chemical and decorative applications.

Both materials are high-purity copper, and the choice should be based on specific application scenarios, process conditions and performance requirements.

Specification of C11000 copper available from GNEE

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