Solder paint for demanding tinning

DKL Metals Sn60 Pb40 solder paint gives engineers a reliable, creamy tin lead solder coating for demanding tinning work. Ideal for use on steel, cast iron, and copper alloys.

This 60/40 solder paint uses a highly active flux system. It quickly removes oxides and dirt from the metal surface. This leaves a bright, fully tinned finish. The surface is then ready for sweat soldering or white metal casting.

Engineered for difficult-to-wet metals

The solder paint combines finely powdered Sn60 Pb40 alloy with a powerful flux, which stays in stable suspension to ensure consistent metal loading in every brush stroke.

Use this tin lead solder paint to pre-tin cast iron housings, mild steel fabrications, and general engineering components where normal fluxes struggle to wet the metal evenly.

Tinning compound facilitates pre-tinning difficult metals. Its powerful flux and Sn60 Pb40 alloy create a stable suspension. It is ideal for cast iron, mild steel, and engineering parts. This solder paint ensures consistent metal loading.

Ideal for white metal bearings and BS 3332 work

This Sn60 Pb40 solder paint is an excellent choice for pre-tinning bearing shells before casting white metal bearing alloys, including BS 3332 grades used in diesel and locomotive applications.

The uniform tinned layer promotes a strong metallurgical bond between the backing steel and the poured bearing metal, which improves service life and reduces the risk of bond failure.

• White metal bearing tinning: Pre-tin shells before casting traditional Babbitt and BS 3332 bearing alloys for rail, marine, and heavy industrial machinery.
• Automotive restoration tinning: Prepare chassis brackets, suspension parts, and classic engine components for solder-loaded repairs and white metal work.
• Steel and cast iron sweat soldering: Create a smooth solder layer on difficult substrates prior to attaching lugs, pads, and reinforcement plates.

Perfect for car body patches and radiator repair

Body shops and restoration specialists use Sn60 Pb40 solder paint for repairs. They apply it to tin car panels and structural joints. This step occurs before loading areas with body solder. It is ideal for classic vehicle restoration and permanent fixes.

It also works well on copper and brass radiator cores, where a tinned surface helps form sound, leak-free solder joints during repair or re-tubing work.

• Classic vehicle restoration: Tins steel bodywork for traditional lead-loading techniques on vintage and historic vehicles.
• Radiator and heat exchanger repair: Provides a uniform tinned layer on copper and brass components before soldering.
• General engineering maintenance: Supports quick tinning of brackets, flanges, and housings in workshops and maintenance departments.

Key benefits of Sn60 Pb40 solder paint

• High performance fluxing action promotes easy tinning of difficult surfaces, including steels and cast irons used in heavy engineering.
• Creamy, brushable consistency keeps the metal powder in suspension and delivers a uniform solder coating without separation.
• Versatile formulation suits pre-tinning for white metal bearings, car body patching, radiator repair, and general sweat soldering.
• Available in practical 1 kg containers for workshop, foundry, and production line use, with larger packs on request.

Technical specifications of Sn60 Pb40 Solder Paint

Property	Value
Alloy composition	Sn60 Pb40 tin lead solder alloy
Product form	Creamy mixture of finely powdered solder and active flux
Melting range	183–188 °C
Recommended substrates	Cast iron, steels, copper, brass, and general engineering alloys
Typical applications	Pre-tinning bearing shells, car body patching, radiator repair, and sweat soldering
Standard pack size	1 kg solder paint containers

Solder Paint application guidance for best results

Clean the parts mechanically and chemically before applying the Sn60 Pb40 solder paint, as cleanliness ensures fast wetting and strong adhesion.

Apply the solder paint by brush or dipping, then heat the assembly evenly until the solder melts and flows, avoiding direct flame where possible.

After cooling, wash the corrosive flux residues away thoroughly using warm water, and use a citric acid wash with a deionised water rinse for critical bearing work.

Provide good fume extraction and always wear eye and skin protection when handling and heating this aggressive flux solder paint.

Order Sn60 Pb40 solder paint from DKL Metals

Source Sn60 Pb40 solder paint directly from DKL Metals, a UK manufacturer with ISO 9001:2015 and ISO 14001:2015 certified quality systems.

Contact the Grangemouth sales team for current pricing, technical advice on bearing tinning and car restoration work, or information on alternative tin lead solder paint grades.

After use, always remove flux residues completely to protect components and maintain long-term reliability in service.