Bi58 Sn42 Low-Melt Solder Alloy
High-Quality Lead-Free Solder
Bi58 Sn42 is a low-melt, lead-free solder alloy combining 58% bismuth and 42% tin. It melts at a low temperature of 138°C, making it perfect for heat-sensitive soldering and specialised industrial applications.
Electronic Uses of Bi58Sn42 Alloy
This alloy excels in electronics assembly, especially for sensitive components prone to heat damage. Its low melting point prevents thermal stress during soldering of printed circuit boards (PCBs) and semiconductor packages. Bi58Sn42 offers excellent wetting and creates strong, reliable joints for electronic devices, including calculators and power semiconductors. It is commonly used in reflow soldering and hand soldering tasks requiring careful temperature control.
Industrial Uses: Vacuum Seals
In industry, Bi58Sn42 serves as a reliable material for vacuum sealing processes. Its eutectic melting point allows precise sealing without excessive heat exposure, which is critical for maintaining vacuum integrity in sensitive equipment. The alloy’s thermal stability and strong mechanical bonding ensure long-lasting, airtight seals essential in manufacturing and scientific instrumentation.
Oil and Gas Industry Applications
Bi58Sn42 is used in the oil and gas sector for plugging and sealing applications where temperature-sensitive materials need protection. Its low melting point enables secure seals in pipelines and equipment without damaging surrounding components. This alloy supports safety and durability requirements critical for harsh operating environments.
Use in Safety Devices
The alloy plays a vital role in safety devices such as thermal fuses and heat-activated switches. Bi58Sn42’s predictable melting point triggers device activation reliably at specified temperatures, protecting electronics and industrial equipment from overheating and fire hazards. Its lead-free composition also aligns with environmental and regulatory standards.
Why Choose Bi58Sn42 Low-Melt Solder Alloy?
Bi58 Sn42 Low-Melt Solder offers superior performance in low-temperature soldering with excellent flow, wetting, and mechanical strength. Its lead-free nature ensures compliance with RoHS and environmental guidelines. This alloy prevents thermal damage during assembly and repair, making it the top choice for sensitive and critical applications across electronics, industry, oil and gas, and safety systems.
Contact our expert team to find out more about Bi58Sn42 Low-Melt Solder Alloy and how it can meet your specific manufacturing and repair needs.
Learn More!
DKL Metals – High and Low Melting Point Solder
Wikipedia – Fusible Alloys