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

SE-Cu Copper

Copper

Designation

SE-Cu (Phosphorus-Deoxidized Copper)

  • International Standards: DIN 1708 2.0070, EN 13601 Cu-OF

  • Aliases: CW021A, Cu-HCP R240


Key Features

1. High Purity: Cu ≥99.90%, P ≤0.003%, O ≤0.03%.

2. Superior Conductivity: Electrical conductivity ≥57.0 Ω*mm²/m (annealed).

3. Hydrogen Embrittlement Resistance: Low oxygen content prevents hydrogen disease.

4. Workability: Suitable for cold/hot working (drawing, forging, stamping).

5. Corrosion Resistance: Stable in harsh environments (chemical, marine).


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

Custom profiles available (e.g., lead frames)


Chemical Composition (%)

Element

Cu

P

O

Total Impurities

Content

≥99.90%

≤0.003%

≤0.03%

≤0.05%

Typical impurities (%): Pb≤0.005, Fe≤0.005, S≤0.005


Physical Properties

Property

Value

Density

8.94 g/cm³

Melting Point

1083°C

Thermal Conductivity

385 W/(m·K)

Electrical Conductivity

≥57.0 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 (%)

Annealed

200–250

60–80

≥40

Hard

350–420

330–380

2–8

Reference: Longitudinal room-temperature properties


Core Advantages

1. High Conductivity & Hydrogen Resistance: Ideal for vacuum devices and H₂ brazing.

2. Thermal Stability: Recrystallization temperature up to 300°C.

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


Applications

  • Power Industry: Cables, busbars, transformer windings.

  • Electronics: IC lead frames, vacuum tube components.

  • Chemical Equipment: Evaporators, corrosion-resistant pipes.

  • Aerospace: Waveguide components, engine cooling 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 SE-Cu and ETP copper?

A1: SE-Cu has lower oxygen (≤0.03%) and added phosphorus, preventing hydrogen embrittlement.


Q2: How to store SE-Cu?

A2: Store in dry, low-humidity environments (≤40% RH) to prevent oxidation.


Standards

Standard

Scope

DIN 1708

Chemical composition & codes

EN 13601

Rod/wire technical conditions

GB/T 5231

Chinese copper classifications


Note: Actual parameters may vary depending on manufacturing processes.


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