armack Soft solder and tinning paste WSN S-Pb75Sn25 250g

armack WSN 25 Tinning and Soldering Paste (250g) – Professional Auto Body Pre-Tinning

Armack WSN 25 soldering paste with tin is a specialized preparation for soft soldering and pre-tinning, designed specifically for professional auto bodywork. It is a crucial element of the auto body soldering (lead loading) process – a technique that has long been the benchmark for the highest quality in the restoration of classic cars, motorcycles, and the construction of custom vehicles.

WSN 25 paste is a mixture consisting of a micro-granular alloy powder S-Pb74Sn25Sb1 according to DIN EN 29453 and 20% by weight of flux according to DIN EN 29454-1 3.1.1.C (F-SW 21).

Why choose body soldering with Armack paste? Lead loading is the ultimate alternative to polyester body fillers. The WSN 25 paste is used for the initial surface preparation (pre-tinning), creating a perfect bonding layer between the bare sheet metal and the actual body solder.

Key advantages:

• Anti-corrosion protection: The paste not only binds the solder but also effectively protects joints, welds, and pitting corrosion spots from re-rusting.
• Perfect adhesion: The high tin content in the paste (60-70%) ensures that when heated, it forms a uniform, silvery coating to which the lead body solder "sticks" flawlessly.
• Flexibility: Unlike standard body filler, the solder joint flexes along with the car body. It does not crack, shrink, and is highly resistant to vibrations.
• Ease of application: The paste has the optimal consistency, making it easy to apply with a brush, even in hard-to-reach areas and on vertical panels.

Applications: This product is dedicated to auto body repairs, leveling body surfaces, restoring vintage cars and motorcycles, as well as sealing welds.

How to use (in brief):

• Clean the sheet metal surface down to "bare metal" (remove all paint, rust, grease, and other contaminants).
• Apply a thin layer of Armack WSN 25 paste using a brush.
• Heat the panel with a torch until the paste turns a silvery color (melts).
• Wipe the hot surface with a clean, natural cloth to remove flux residue and achieve a smooth, pre-tinned surface ready for the application of Armack LC25 body solder sticks.

Complete the set: The paste itself is only half the battle. To perform the complete lead loading process, you need a high-quality filler. Our Armack Body Solder works perfectly with the Armack WSN 25 paste, guaranteeing easy spreading and a durable bond with the substrate.

WARNING!!! This paste contains lead. For soldering and tinning items that come into contact with food, a paste containing pure powdered tin must be used.