Key Technical Specifications
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- Composition: This is a classic 63/37 (63% Tin, 37% Lead) alloy formulation, designated by the “37pb” (Lead) and “63Sn” (Tin) marking on the spool core.
- Ultra-Fine Diameter: The 0.3mm diameter makes it exceptionally thin, which is the perfect size for manual surface-mount device (SMD) work, circuit board trace jumps, and tight mobile phone repairs.
- Low Melting Point: It features a low, sharp melting threshold of approximately 183°C (361°F). As a eutectic mixture, it switches immediately from liquid to solid without entering a semi-solid “pasty” state, significantly minimizing the risk of cold solder joint.
- Integrated Core: The wire features a built-in 1.2% flux core, eliminating the need for independent external welding powders or pastes. It is formulated to be low-smoke and environmentally friendly during reflow.
Material Compatibility
This cored welding wire is highly versatile and capable of creating strong connections across various metallic surfaces, including:
- Pipes & Shells: Galvanized pipes, nickel-plated surfaces, and iron plates.
- Plates: Stainless steel plates, copper plates, and aluminum plates.







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