Collection: Silver Solder Fluxes

Our silver solder flux range is designed to support brazing applications across a wide temperature spectrum, from low temperature silver soldering through to high temperature and prolonged heating cycles. These fluxes protect joint surfaces from oxidation, promote clean alloy flow, and help ensure strong, reliable joints.

The range includes general-purpose fluxes such as EF Flux for low temperature work, high temperature fluxes like HT5 for extended heating and stainless steel applications, as well as bronze brazing fluxes and specialist aluminium fluxes. Suitable for use with cadmium-free silver solders and a wide variety of base metals, our fluxes provide dependable performance across model engineering, refrigeration, HVAC, fabrication, and specialist metal joining applications.

  • Great Value Products - CuP Alloys

    Great Value Products

    Discover premium-quality silver solder and brazing alloys at competitive prices — exceptional performance and reliability for every budget.

  • Free UK Delivery - CuP Alloys

    Free UK Delivery

    Enjoy fast, reliable shipping across the UK mainland with no minimum spend and no hidden delivery charges.

  • Expert Customer Service - CuP Alloys

    Expert Customer Service

    Rely on over 60 years of brazing experience — real advice, technical support, and product guidance from industry specialists.

  • Unbeatable Selection - CuP Alloys

    Unbeatable Selection

    Find everything you need for successful brazing — from silver solder and fluxes to torches and accessories, all in one place.