E-Cu58 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 of E-Cu 58 Copper

Q1: Difference between E-Cu58 and ETP copper?

A1: ECu58 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.