High-Purity Copper Cathode

Product Specifications

Technical details and manufacturing context for High-Purity Copper Cathode

Definition

High-purity copper cathode is a semi-finished industrial material produced through electrolytic refining of blister copper. It serves as the primary raw material for manufacturing copper rods, wires, tubes, and other copper-based products. The material is characterized by its high electrical conductivity and excellent formability. It represents the standard intermediate product in copper production before downstream fabrication processes. The cathode is typically supplied as flat sheets with a thickness of 12–25 mm and a weight per sheet of 50–150 kg. Standard sheet dimensions range from 1000×1000 mm to 1200×1200 mm, with custom sizes available. The copper purity is specified as a minimum of 99.99% by weight, with a total impurity content of no more than 100 ppm. Oxygen content is limited to 10 ppm or less. Electrical conductivity is at least 101% IACS, meeting the requirements for high-conductivity applications. The material exhibits a tensile strength of 200–250 MPa in the annealed condition, with an elongation of at least 30%, indicating good ductility for forming operations. Surface roughness is maintained at or below 0.8 μm Ra, and flatness is within 3 mm/m to ensure uniform stacking. The theoretical density is 8.94 g/cm³. These parameters are referenced against standards such as GB/T 467-2010, IEC 60028, GB/T 1031-2009, GB/T 2040-2008, GB/T 228.1-2010, and GB/T 1423-1996. As a neutral directory, we do not manufacture or supply this product. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The production of high-purity copper cathode relies on electrolytic deposition. In an electrolytic cell, a copper sulfate solution serves as the electrolyte. Blister copper is used as the anode, and stainless steel starter sheets act as the cathode. When an electric current is applied, copper ions from the solution are reduced and deposited onto the stainless steel sheets, forming a pure copper layer. Impurities either remain in the solution or settle as anode slime. The deposited copper is periodically stripped from the starter sheets to yield the final cathode. This process achieves a copper purity of at least 99.99% and controls trace element content to specified limits.

Common Materials

Copper, Trace elements

Technical Parameters

Parameter	Typical range	Notes & selection driver
Copper PurityRequired	99.99 %	Minimum copper content by weightGB/T 467-2010
Electrical ConductivityRequired	≥101 % IACS	Electrical conductivity relative to International Annealed Copper StandardIEC 60028
Oxygen ContentRequired	≤10 ppm	Maximum oxygen contentGB/T 467-2010
Sheet ThicknessRequired	12–25 mm	Standard thickness rangeGB/T 467-2010
Sheet WeightRequired	50–150 kg	Standard weight per sheet
Surface Roughness	≤0.8 μm Ra	Maximum surface roughnessGB/T 1031-2009
Sheet Dimensions (L×W)	1000×1000–1200×1200 mm	Custom sizes available
Flatness	≤3 mm/m	Ensures uniform stackingGB/T 2040-2008
Tensile Strength	200–250 MPa	Annealed conditionGB/T 228.1-2010
Elongation	≥30 %	High ductility for formingGB/T 228.1-2010
Impurity Content (Total)	≤100 ppm	Sum of all trace elementsGB/T 467-2010
Density	8.94 g/cm³	Theoretical density of pure copperGB/T 1423-1996

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Copper Matrix Part
Primary conductive and structural material

Material: High-purity copper
Surface Oxide Layer Part
Natural protective coating against further oxidation

Material: Copper oxide
Trace Elements Part
Residual impurities from refining process

Material: Various metallic elements

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Purity Copper Cathode.

Manufacturers of High-Purity Copper Cathode

Manufacturer profiles associated with High-Purity Copper Cathode.

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Frequently Asked Questions

What is the minimum copper purity of this cathode?

The minimum copper content by weight is 99.99%, as specified in the source data. This value should be confirmed with the supplier for the specific batch.

What are the typical dimensions of a copper cathode sheet?

Standard sheet dimensions range from 1000×1000 mm to 1200×1200 mm, with thickness between 12 and 25 mm. Custom sizes may be available upon request.

Which standards apply to this product?

Relevant standards include GB/T 467-2010 for copper purity and oxygen content, IEC 60028 for electrical conductivity, and GB/T 228.1-2010 for tensile testing. Always verify compliance with the manufacturer.

How is the cathode produced?

It is produced by electrolytic refining of blister copper. Copper ions are deposited onto stainless steel starter sheets from a copper sulfate solution, yielding high-purity copper sheets.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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purity:	≥99.99% Cu (electrolytic grade)
pressure:	Atmospheric to 10 bar (standard), up to 50 bar (with structural support)
flow rate:	Not applicable (static material)
temperature:	Ambient to 200°C (continuous), 250°C (short-term)
surface quality:	Smooth, dendrite-free, low oxide layer
thickness range:	5-25 mm (standard), custom up to 50 mm
slurry concentration:	Not applicable (solid sheet product)

Product Specifications

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