LME Grade A Copper Cathodes
High-purity refined copper plates produced through advanced electrolytic refining. Engineered for premium wire and cable manufacturing, high-tech electronics, and advanced industrial fabrication.
Uncompromising Conductivity.
SINCHI WAYRA SA produces premium copper cathodes that serve as the foundational material for the world’s electrical and telecommunications infrastructure. Utilizing massive-scale electrochemical tankhouses, we dissolve and re-precipitate copper molecules to eliminate trace impurities.
The resulting plates boast exceptional ductility and an unyielding electrical conductivity profile. Whether destined for Oxygen-Free Copper (OFC) aerospace applications or standard ETP wire production, our cathodes deliver the absolute consistency required by global manufacturing sectors.
Chemical & Physical Specifications
1. Copper Cathode — Grade A (LME Standard)
Applications: Wire and cable manufacturing, copper rod production, electrical equipment, brass manufacturing, and industrial fabrication.
| Standard Physical Specifications | |
|---|---|
| Copper Purity (Cu) | 99.97% min |
| Shape | Flat plate / sheet cathode |
| Surface | Smooth, clean, no excessive nodules |
| Thickness | 3–18 mm |
| Plate Size | Approx. 914 × 914 mm to 1000 × 1000 mm |
| Weight per Sheet | 80–160 kg |
| Bundle Weight | 1–2 MT |
| Chemical Composition (ASTM B115) | |
|---|---|
| Copper (Cu) | 99.97% min |
| Silver (Ag) | Trace |
| Arsenic (As) | 0.0005% max |
| Antimony (Sb) | 0.0004% max |
| Bismuth (Bi) | 0.0001% max |
| Iron (Fe) | 0.0010% max |
| Lead (Pb) | 0.0005% max |
| Sulfur (S) / Oxygen (O₂) | 0.0015% max / Controlled |
A. LME Grade A & ETP Cathode
- LME Grade A: Registered for exchange delivery, 99.97% min purity, premium export quality. Includes SX-EW & Electro-refined.
- ETP (Electrolytic Tough Pitch): 99.90%–99.99% purity. High conductivity and excellent ductility for electrical industries.
B. OFC & Secondary Cathodes
- OFC (Oxygen-Free): Up to 99.99% purity. Very low oxygen content, high conductivity for electronics and aerospace.
- Secondary/Recycled: 98%–99.5% purity. Produced from recycled scrap for industrial remelting.
Applicable International Standards
- ASTM B115: Standard specification for electrolytic copper cathodes.
- LME Grade A: London Metal Exchange standard.
- ISO 431: Copper cathode quality standard.
- EN 1978: European copper cathode standard.
Export Packaging & Logistics
A. Steel-Strapped Bundles
The most common packaging method for bulk maritime export.
- Standard Bundle: 1 MT
- Heavy Bundle: 2 MT
- Jumbo Bundle: 3 MT
- Method: Sheets stacked uniformly, banded horizontally and vertically with steel, secured on wooden skids/pallets.
- Jumbo/Compact: High-density stacking for container utilization.
B. Palletized & Loose Stacks
Secured transport for varied load types and distances.
- Wooden Pallets: ISPM-15 fumigated, moisture-resistant wrap, edge protection. Used for premium cathodes.
- Loose Stack Loading: Direct container stacking using steel separators and dunnage wood blocking.
- Protection: PE wrapping, waterproof tarps, silica gel desiccants.
Container Loading Standards
Strict maritime loading protocols for 20FT units.
- 20FT Container: 20–25 MT
- Requirements: Dry container only, anti-moisture lining, even weight distribution.
- Quality Checks: Heavy-duty floor inspection, strictly no oil or contamination.
- Storage: Dry, ventilated, and covered warehouse.
Inspection & Quality Control
Pre-Shipment Inspection conducted by: BQCIS, SGS, Bureau Veritas (BV), Intertek, or CCIC.
Scope: Gross/net weight verification, bundle/sheet count, spectrometer chemical analysis, surface defect inspection, radiation screening, and container seal verification.
Export Documentation & Markets
Docs: Commercial Invoice, Packing List, Bill of Lading, MTC, COA, Inspection Certificate, Origin Cert., Insurance.
Markets: China (LME Grade A), India (Electrolytic), UAE (LME), Europe (ASTM/LME), USA (High-purity ETP).
Electrolytic Refining
Our expansive tankhouses ensure that raw smelted anodes are meticulously dissolved and deposited onto starter sheets, locking in the 99.97% purity standard required by international exchanges.
Quality Assurance
Every cathode sheet is visually and chemically inspected to ensure a smooth, clean surface free of excessive nodules, guaranteeing flawless downstream integration for our industrial partners.
Powering Global Infrastructure.
From the electrification of modern cities to the manufacturing of advanced renewable technologies, SINCHI WAYRA SA’s Grade A copper cathodes secure the material foundation of the global economy.