The Felder Brass Hard Solder UM Cu 303 is a high-quality soldering accessory specifically designed for brazing copper, nickel, and steel, as well as for welding brass and bronze. With a length of 500 mm and a diameter of 2 mm, this flux-coated hard solder offers optimal handling and application. The working temperature is approximately 900 °C, making it an ideal choice for demanding soldering and welding tasks. The alloy L-Cu Zn 40 complies with the standards ISO 3677 and DIN EN ISO 17672, underscoring the quality and reliability of the product. The product is delivered in practical packaging with a total weight of 5 kg, providing a sufficient quantity for various projects. The use of this hard solder requires special caution as it is classified as a hazardous material, and appropriate safety measures should be observed.

• Flux-coated for improved solder joints
• Suitable for brazing copper, nickel, and steel
• Working temperature of approx. 900 °C
• Complies with standards ISO 3677 and DIN EN ISO 17672.