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Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
Code
Copper

E-Cu58 Copper

Copper

Designation

E-Cu58 (Phosphorus-Deoxidized Copper)

International Standards: CW004A (EN 13601), Cu-ETP (DIN 1708 2.0065), C11000 (ASTM)


Key Features

1. High Purity & Conductivity: Cu ≥99.90%, electrical conductivity ≥57.0 Ω*mm²/m (annealed).

2. Hydrogen Embrittlement Resistance: O ≤0.06%, suitable for H₂ environments.

3. Workability: Excellent cold/hot working performance (drawing, forging).

4. Corrosion Resistance: Stable in chemical and marine environments

5. Thermal Conductivity: ≥385 W/(m·K), ideal for heat dissipation.


Product Forms & Dimensions

Form

Dimensions

Rod

Diameter: 10–300mm; Length: 2000–6000mm

Tube

OD: 5–200mm; Wall Thickness: 0.5–10mm

Sheet/Strip

Thickness: 0.1–80mm; Width: 100–1200mm

Wire

Diameter: 0.05–10mm; Custom lengths

Foil

Thickness: 0.005–0.5mm; Width: 10–500mm


Chemical Composition (%)

Element

Cu

O

P

Total Impurities

Content

≥99.90%

≤0.06%

0.005–0.040%

≤0.05%

Typical impurity limits（%）：Pb≤0.005，Fe≤0.005，S≤0.00521315


Physical Properties

Property

Value

Density

8.94 g/cm³

Melting Point

1083°C

Thermal Conductivity

385 W/(m·K)

Electrical Conductivity

57.0–58.0 Ω*mm²/m

Resistivity

1.724×10⁻⁸ Ω·m

Thermal Expansion

17.7×10⁻⁶/K（20–100°C）


Mechanical Properties

Condition

Tensile Strength (MPa)

Yield Strength (MPa)

Elongation (%)

Hardness (HV)

Annealed

200–250

60–80

≥35

35–65

Hard

350–420

330–380

2–8

85–95

Data based on EN 13601 R200/R250/R290 states


Core Advantages

1. High Current Capacity: Ideal for power transmission systems (e.g., busbars).

2. Hydrogen Compatibility: Controlled oxygen content prevents intergranular cracks.

3. Precision Machining: Fine-grained structure minimizes deformation.


Applications

  • Power Industry: HV cables, transformer windings.

  • Electronics: Vacuum tube components, semiconductor packaging.

  • Chemical Equipment: Corrosion-resistant pipes, evaporators.

  • Vacuum Devices: Magnetron anodes, traveling-wave tubes.


Processing Guidelines

1. Cold Working: Anneal at 500–700°C (under N₂/Ar protection).

2. Hot Working: Temperature range 750–875°C, final rolling ≥600°C.

3. Welding: Avoid reducing atmospheres >370°C; use silver-based filler.


Key Application Scenarios

Industry

Typical Components

Requirements

Power Transmission

HV cable conductors

High current capacity, arc resistance

Vacuum Devices

Magnetron anodes

Low gas emission, high-temperature brazing

Renewable Energy

Solar collector plates

Corrosion resistance, thermal conductivity


FAQ

Q1: Difference between E-Cu58 and ETP copper?

A1: E-Cu58 has controlled phosphorus (0.005–0.040%) for enhanced hydrogen resistance.


Q2: How to prevent oxidation during annealing?

A2: Use inert gas protection (N₂/Ar) and control annealing temperature ≤700°C.


Standards

Standard

Scope

EN 13601

Rod/wire technical conditions

DIN 1708

Chemical composition & codes

GB/T 5231

Chinese copper classifications

ASTM B152

U.S. specifications for sheet/strip


Note: Actual parameters may vary depending on manufacturing processes.


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