Copper Cathode Grade A (99.99%) Specifications - Technical Analysis

Copper Cathode Grade A: LME vs. Non-LME Technical Specifications

In the global non-ferrous market, Copper Cathode Grade A (99.99%) is the critical substrate for electrical conductivity. WorldwideTradeX bridges the gap between primary smelting operations in Africa (DRC/Zambia) and industrial manufacturers globally, ensuring compliance with both LME and ASTM standards.

Table of Contents

  1. LME Registered vs. Non-LME Brands
  2. Chemical Assay: The 99.99% Purity Benchmark
  3. Logistics: Packaging & Storage
  4. Technical Specifications Table

1. LME Registered vs. Non-LME Commercial Reality

While the London Metal Exchange (LME) sets the benchmark, much of the world's physical trade occurs "off-exchange."

  • LME Registered: Brands produced by vetted smelters, suitable for delivery into LME warehouses. Fixed pricing.

  • Non-LME Grade A: Functionally identical purity (99.99+%) but produced by non-registered smelters. These typically trade at a discount to LME Cash, offering higher ROI for manufacturers.

2. Chemical Assay: Purity & Impurity Limits

Purity is defined by what is absent. To meet ASTM B115-10 or BS EN 1978:1998 standards, the material must undergo mass spectrometry at the loading port.

  • Verification: Every WorldwideTradeX shipment is certified by SGS or Bureau Veritas to ensure the Cu content meets the contractual 99.9935% threshold.

3. Industrial Logistics & Handling

  • Sheet Size: Standard 914mm x 914mm x 12mm approx.
  • Packaging: Aluminum-banded bundles (approx. 2.5 MT each), palletized for ocean transit in 20ft containers (approx. 22-25 MT per box).

4. Technical Specifications: Metals Hub

ElementRequirement (ASTM B115)Typical Result (WTX Source)
Copper (Cu)99.99% Min.99.9935% - 99.997%
Arsenic (As)5 ppm Max.< 2 ppm
Lead (Pb)5 ppm Max.< 3 ppm
Iron (Fe)10 ppm Max.< 7 ppm
Sulfur (S)15 ppm Max.< 10 ppm

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Frequently Asked Questions

What is Grade A Copper Cathode and what purity does it require?

Grade A Copper Cathode (also called LME Grade A) must have a minimum purity of 99.99% Cu. It conforms to BS EN 1978:1998 standard and is the benchmark product for LME (London Metal Exchange) registered warehouses. It is used in wire rod, electrical cables, and electronics manufacturing.

What is the difference between LME and non-LME copper?

LME-registered copper is produced by approved refineries and can be traded on the London Metal Exchange. Non-LME copper may have the same purity but comes from non-registered facilities — it trades at a discount and requires additional buyer due diligence on origin and quality documentation.

What are standard payment terms for copper cathode bulk transactions?

For first transactions, irrevocable LC (Letter of Credit) under UCP 600 is standard. For established counterparties, SBLC-backed open account or 30% advance + 70% against BL is common. Copper is priced against LME spot or 3-month forward with a negotiated premium/discount.

What inspection standards apply to copper cathode shipments?

SGS, Bureau Veritas, or Alex Stewart inspection at loading port is standard. The inspection covers weight (net/gross), purity sampling, and bundle count. A Certificate of Quality and Certificate of Weight are issued and form part of the LC document set.