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Safe and Durable.

Lead-Free Solder Coated Brass

  • Lead-Free Solder coated brass tubes
  • Flat oval, HF seam welded
  • 70/30 Arsenical Brass CuZn30As UNS C26130 EN CW707L
  • Environmental Solution for Heavy Duty Radiator Cores

Lead-free solder coated brass tubes offer all the performance benefits of brass while using Sn97Cu3 to replace the lead-tin solder. This lead-free alternative offers a more optimised tube to fin joint and coupled with a long life in service, is the environmental solution for heavy duty applications.

Lead-free solder coated brass tubes combine dimensional accuracy and control, with an optimised joint from the higher wetting properties of the solder, for an exceptional tube to header fit and a more favourable geometry of the solder joint. The surface tension and density of lead free solder (Sn97Cu3) in liquid form is c. 12% higher than a traditional solder which offers a tighter joint shape in the radiator core. Coupled with high strength, thermal performance, durability and resistance to corrosion, including pitting corrosion from coolant, lead-free solder coated tubes deliver both a high production yield for our customer and a highly efficient heat exchanger for theirs.

Standards Delivery Programme

Contact us to discover more about our high quality, solder coated brass tubes that can be custom designed and manufactured to your specification and/or drawing. With tooling available for hundreds of profiles we can quickly check to see if your requirements could be immediately produced. Alternatively, take a look at our standard range of tubes that are readily available, made-to-order based on strip in stock.

Standard range of tubes
Major Axis (Height mm) Minor Axis (Belly mm) End Radius (mm) Thickness (mm) Burst Pressure (bar min) Drawing No.

Squareness 90° +/- 1.25°
Flatness 1mm in 500mm

Whether you require standard profiles or a completely custom tube specification, contact us today to see how we can help.

Product capability and tooling availability

Product capability and tooling availability

Relative corrosion properties of Cartridge Brass compared to other Copper Alloys

product overview sc corrosion graph

Markets Served

Lead-free solder coated brass tubes from Enfield Tubes can be used across a range of demanding on and off highway applications within a number of markets including:

  • Agricultural equipment
  • Trucks
  • Construction and mining
  • Bus
  • Locomotive
  • Marine
  • Power generation

Key Benefits

  • Environmentally friendly
  • Size control
  • Lightweight
  • Thermal performance
  • Durability
  • Corrosion resistance
  • High Strength
  • Maintainability (can be repaired)

The life of all of our raw materials is infinite. They are a renewable resource that can be recycled repeatedly with no loss of properties.

For more information on the environmental performance of our company and products please see our Environment Page.