Silver solder types and delivery formats at LOT-TEK
A wide range of alloy compositions
We offer a broad selection of silver-based solder alloys, including Ag-Cu-Zn, Ag-Cu-P, and cadmium-free variants for health-sensitive industries. Each alloy is engineered for specific joining tasks – from soft copper connections to hard-to-braze stainless steel. Our team helps you select the right composition based on your material combination, temperature range, and mechanical requirements.
Delivery forms for every production process
Whether manual brazing or automated manufacturing, we supply our silver solders in precisely manufactured formats: wires, rods, rings, strips, ribbons, or custom-shaped preforms. All delivery forms are produced with tight tolerances and consistent material structure to support stable, repeatable processes.
Adjustable silver content for optimal results
From cost-efficient 34% silver alloys to high-purity versions exceeding 55% silver content – our portfolio is tailored to your technical and economic priorities. We help you balance strength, melting behavior and price-performance to achieve ideal results in your specific application.
Custom solutions on request
Do you need a non-standard alloy, shape or preform geometry? At LOT-TEK, we offer customized production runs – with full documentation, traceability and lot-specific certification. Whether it’s a special project or a long-term volume contract, we manufacture your silver solder to spec.
Next, we’ll cover the processing methods and technical parameters that ensure successful use of our silver solders in real-world production environments.
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Processing methods and technical guidelines for silver soldering
Working temperatures and melting behavior
Most LOT-TEK silver solder alloys melt between 600 °C and 800 °C, offering an excellent balance between flow control and component safety. The narrow melting ranges of our alloys reduce overheating risk and allow for precise thermal management – even in sensitive assemblies.
Compatibility with ferrous and non-ferrous metals
Our silver solders are engineered for strong bonding with copper, brass, bronze, steel, and other non-aluminum base metals. Aluminum and magnesium are not suitable for silver soldering due to their oxide layer structure. For all other materials, LOT-TEK supports you with alloy compatibility charts and process consulting.
Soldering techniques and equipment compatibility
Our silver solder alloys are optimized for a wide range of joining techniques: open flame, induction brazing, furnace brazing, laser soldering and more. Whether used in high-volume production or in manual precision work, they offer reliable process behavior with consistent flow, wetting and joint quality.
Use of flux and fluxless alternatives
When soldering in ambient atmosphere, appropriate flux is essential to prevent oxidation and ensure smooth wetting. We offer borax-based and other specialized fluxes tailored to silver soldering. Alternatively, most LOT-TEK alloys can be processed flux-free under vacuum or inert gas – reducing cleaning steps and contamination risk.
Looking beyond the materials and process details – choosing the right supplier can make all the difference. In the next section, find out why LOT-TEK is your trusted partner for silver soldering solutions.
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Why LOT-TEK is your trusted partner for silver soldering solutions
Engineering know-how meets real-world process understanding
At LOT-TEK, we go beyond material delivery. Our team combines in-depth metallurgical knowledge with hands-on experience in industrial brazing environments. We don’t just offer a product – we help you solve technical joining challenges with the right alloy, format, and process guidance.
Individual consulting for demanding applications
No two production lines are the same – and neither are our recommendations. We advise you on alloy selection, melting range, joint design and soldering methods based on your actual components and thermal constraints. Whether for serial production, prototyping or high-purity systems – we offer precisely what your process needs.
Certified quality and full traceability
All our silver solders are manufactured under controlled conditions and subjected to rigorous quality checks. Every delivery is fully documented and traceable, meeting the compliance standards of industries such as electronics, aerospace and medical devices. Certificates and lot-specific analyses are available upon request.
Efficient logistics and responsive communication
We supply customers across Europe and beyond with reliable lead times, personal service and transparent project handling. Whether you need a one-time delivery or a long-term sourcing partner – we’re ready to support you from day one.
Want to discuss your project or need a recommendation for your process?
Contact our team today – we’ll be happy to help you find the ideal silver soldering solution for your application.
