S 204 series copper-phosphorous alloys, copper to copper, and copper is used in rice sertlehim. Alloy due to the phosphorus in dekapana without the need of brazing.

Products in this group increased in phosphorus ratio in alloy hard lehinm strand was increases fluidity. However, to increase the amount of phosphorus causes the refractive index.

S 202, such as Tin and copper-phosphorus-containing sertlehim alloys is according to other phosphorus alloy filler metal melts at lower temperatures.