Learn the differences between platinum solder grades, melting temperatures, and repair applications to choose the right solder for every bench job.
When working with platinum, choosing the right solder is just as important as mastering your soldering technique. Because platinum requires higher working temperatures than many other precious metals, selecting the appropriate solder helps maintain the integrity of the piece while producing strong, clean, and reliable joints.
Understanding Platinum Solder Grades
Why Melting Temperature Matters
A solder's melting temperature is determined by when it begins to flow and bond with the surrounding metal. When performing multiple soldering operations on the same piece, jewelers typically work with solder from the highest melting temperature to the lowest. The higher the melting temperature is, the better the solder is suited for earlier assembly steps. This approach prevents earlier joints from reflowing as additional repairs or assembly steps are completed.
What Do Easy, Medium, and Hard Mean?
The terms easy, medium, and hard describe a solder's melting range rather than its strength or ease of use.
- Easy — melts at lower temperatures and is commonly used for final repairs or touch-ups.
- Medium — provides a balance of heat control and joint strength, making it a versatile choice for everyday repairs.
- Hard — requires higher temperatures and is typically used early in the repair or assembly process before lower-melting solders are introduced.
Repair Solder vs. Seamless Solder
Repair Solder is specifically formulated for bench repairs, offering reliable flow characteristics and dependable joints for common repair applications.
Seamless Solder is a specialized, high-temperature platinum solder designed to produce nearly invisible seams. It blends more naturally with surrounding platinum where appearance is just as important as strength.
Platinum Solder Guide
Platinum, Cadmium-Free, Extra Easy–1000 Repair Solder Sheet
This is the lowest melting platinum solder, ideal for delicate repairs, chain work, and pieces with heat-sensitive elements where minimal heat exposure is important.
Platinum, Cadmium-Free, Easy–1100 Repair Solder Sheet
This solder has a slightly higher melting temperature that’s well suited for final repairs, small joints, and touch-ups requiring controlled heat.
Platinum, Cadmium-Free, Medium–1200 Repair Solder Sheet
This solder offers a more versatile option for general repairs, sizing work, and intermediate assembly where additional joint strength is needed.
Platinum, Cadmium-Free, Hard–1300 Repair Solder Sheet
Designed for stronger joints, this solder is commonly used earlier in the repair and assembly process before lower melting solders are applied.
Platinum, Cadmium-Free, Weld–1500 Repair Solder Sheet
This high-strength solder is intended for structural repairs and applications that require maximum durability.
Platinum, Cadmium-Free, Special Weld–1600 Repair Solder Sheet
Ideal for demanding repairs involving heavy platinum components, this solder offers exceptional strength with minimal color variation.
Platinum, Cadmium-Free, Seamless–1700 Repair Solder Sheet
This solder offers the highest melting option, formulated to create nearly invisible seams. It’s an excellent choice for sizing, seam repairs, and applications where appearance and metal continuity are critical.
Choose the Right Solder for Every Repair
No single platinum solder is the right choice for every application. Selecting the appropriate melting temperature and solder grade helps create stronger repairs, minimizes unnecessary heat exposure, and preserves the quality of finished work throughout the soldering process.
Stuller’s assortment of cadmium-free platinum solders provides you with the options needed to tackle every stage of the repair process with confidence. Explore our complete selection of solders to find the right solution for your next bench project.