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Nickel Solders

High-performance nickel solders for advanced metal joining

Benefit from strong, oxidation-resistant joints in applications involving stainless steel, nickel alloys and vacuum processes.

When metal joints are exposed to extreme temperatures or corrosive atmospheres, conventional soldering solutions often reach their limits.
That’s where nickel solder steps in – offering a reliable, high-strength alternative designed for the toughest industrial conditions.
Whether you are working with stainless steels, chromium-rich alloys or nickel-based materials, nickel solder delivers unmatched durability and thermal resilience.

At LOT-TEK, we develop nickel solder alloys specifically for vacuum brazing and inert gas atmospheres.
Thanks to their low vapor pressure, our products are perfectly suited for use in aerospace,
medical technology and other high-precision fields.
In cryogenic systems, for example, our nickel solders ensure secure bonding even at extremely low temperatures.

Depending on your specific application, we offer a range of nickel-based solder materials compatible with different brazing environments –
from open flame setups to flux-free vacuum processes. Alloys can be customized to meet mechanical strength, corrosion resistance and wettability requirements.

Curious about what makes our soldering materials so versatile? Visit our
product overview for a detailed list of available alloys.
You can also learn more about our company philosophy or explore the industries we serve on the
markets page.
If you need personal support or wish to discuss your technical specifications, feel free to
get in touch with our experts today.

ProduktCompositionISO / UNS AWSSolidus [°C]Liquidus [°C]
BNi-5a72.2Ni19Cr7.3Si1.5BNi 660 / N99651 BNi-5a10651150Anfragen
AMS 478355.2Co19Cr17Ni8Si0.8BCo 922 / R39001 BCo-111201149Anfragen
AMS 478271Ni19Cr10SiNi 650 / N99650 BNi-510791135Anfragen
BNi-5b76.3Ni15Cr7.25Si1.45Ni 661 / N99652 BNi-5b10301126Anfragen
AMS 477673.9Ni14Cr4.5Fe4.5Si3.1BNi 610 / N99610 BNi-1a9601094Anfragen
AMS 477994.7Ni3.5Si1.8BNi 361 / N99640 BNi-49821066Anfragen
BNi-979.9Ni15Cr3.6B1.5FeNi 612 / N99612 BNi-910551055Anfragen
AMS 477892.4Ni4.5Si3.1BNi 630 / N99630 BNi-39841054Anfragen
AMS 4775 73.15Ni14Cr4.5Si3.1B4.5Fe0.75C– / – BNi-19771038Anfragen
AMS 477782.4Ni7Cr4.5Si3.1B3FeNi 620 / N99620 BNi-29701025Anfragen
BNi-775.9Ni14Cr10.1PNi 710 / N99710 BNi-7888888Anfragen
BNi-689Ni11PNi 700 / N99700 BNi-6877877Anfragen
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  • The range shown is only a selection of our products

Nickel solder for extreme temperatures and corrosive atmospheres

Reliable joints in aerospace, medical, and vacuum applications

In industries where mechanical stability must be guaranteed even under extreme thermal or chemical stress, nickel solder is the material of choice. Thanks to its excellent oxidation and corrosion resistance, it plays a key role in the manufacturing of components exposed to heat cycles, aggressive media or vacuum environments.

In sectors such as aerospace and medical engineering, where quality standards leave no room for compromise, our nickel-based solder alloys ensure consistent bonding performance – even at temperatures well above 900 °C. They are also ideal for use in cryogenic applications, where materials are exposed to extreme cold and thermal shock must be absorbed without loss of structural integrity.

Whether you’re joining stainless steels, nickel-chromium alloys, or heat-resistant superalloys – our nickel solder formulations are precisely engineered to withstand stress, preserve conductivity, and maintain tight tolerances.

Each alloy we supply is tested for process stability and optimized for industrial use in cleanroom and vacuum furnace environments. Need help finding the right solder for your setup? Contact our engineering team – we’ll find the perfect match for your thermal joining challenge.

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Customizable nickel solder alloys for your exact requirements

From preforms to powder: every form factor, every purpose

We know that no two processes are alike. That’s why we offer nickel solder in a wide range of alloy compositions and formats – allowing you to match your material exactly to the demands of your production line.

Whether you require foil, wire, rings, or powder – we supply your preferred form with tight manufacturing tolerances and surface finishes optimized for automated processing. Need a low-vapor-pressure alloy for vacuum brazing? Or a solution for narrow-tolerance joints in microelectronics? We’re ready.

Each nickel solder variant from LOT-TEK undergoes strict quality control and can be delivered with material certification and full traceability. Our in-house experts are available to assist with technical questions, application testing, and product selection.

Learn more about the applications we serve in toolmaking, electrical engineering, and vacuum systems. Our solutions are as versatile as your challenges.

Let’s find your perfect nickel solder

From process planning to material selection – our team is ready to assist. Tell us about your technical requirements and receive tailored advice with no obligation.

Contact us now to request a custom quote or consultation