Lead-Free Solder Wire 3.0mm 450g Solid Core Sn/Cu 99.3/0.7 Heavy Duty

This heavy-duty lead-free solder wire is engineered for demanding applications where strength and reliability matter. Manufactured from a high-purity Sn99.3/Cu0.7 (Tin/Copper) alloy, it produces strong, long-lasting joints while complying with modern environmental standards. The thick 3.0 mm diameter makes this solder ideal for large surfaces and high-mass materials such as copper pipes, sheet metal, and structural components. Unlike thin electronics solder, this wire feeds efficiently into wide joints and delivers consistent performance for professional and workshop use. Because it is a solid core solder, no flux is included inside the wire. This allows users to select the proper external flux for their specific application, ensuring optimal bonding on copper, brass, steel, and other metals. The generous 450 g spool provides excellent value and reduces the need for frequent replacement, making it a reliable choice for contractors, metalworkers, stained glass artists, and advanced DIY projects.

• 🔧 HEAVY-DUTY 3.0 MM DIAMETER Extra-thick solder wire designed for large joints, high-mass metals, plumbing work, and industrial applications where standard thin solder is not effective. 🛡️ LEAD-FREE Sn99.3/Cu0.7 ALLOY Made from 99.3% tin and 0.7% copper for strong, durable, corrosion-resistant bonds while meeting modern environmental and safety standards. ⚙️ SOLID CORE — USE WITH EXTERNAL FLUX No internal flux allows full control over soldering performance. Ideal for professionals using specific flux types for copper, brass, steel, and other metals.