Tin Coated Copper LiOA

LiOA Tin Coated Copper is pure copper wire or bar coated with a thin layer of tin by electroplating or hot dipping.
The tin layer protects the copper from oxidation, improving solderability and corrosion resistance — especially useful in humid, mildly acidic or marine environments.
Pure copper core 99.994% / 99.991% (SGS certified); pure tin (Sn) coating ≥ 99.9%, evenly applied with high adhesion that does not peel during bending and drawing.
Wire diameter Ø0.25 – 3.2mm; available stranded on request; in annealed (soft) or hard states.
Applications include power cables, connectors, the automotive / EV industry and solar cables.

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Description

Technical Specifications

LiOA Tin Coated Copper is produced from 99.994% / 99.991% pure copper drawn wire (SGS certified), coated with a ≥ 99.9% pure tin layer. The tin coating is evenly applied with high adhesion and does not peel during bending and drawing — ensuring the durability of the protective layer throughout the product’s life cycle.
The tin layer significantly extends conductor life in humid, mildly acidic and marine environments compared with bare copper, while keeping conductivity stable over the long term thanks to an oxidation-free surface — particularly important at contact points and solder joints.
Better solderability than bare copper makes assembly of connectors, clamps and terminal blocks in switchboards and electrical / electronic equipment more convenient.
The product offers a range of diameters (Ø0.25 – 3.2mm), is available stranded on request and in both annealed and hard states — flexibly meeting applications from signal and coaxial cables to automotive / EV conductors and outdoor solar cables.
The manufacturing process complies with international standards IEC 60228 and ASTM B33, and holds ISO 9001 and ISO 14001 certifications — providing quality assurance for domestic customers and export partners.