Contains 14-16% , 4.8-5.2% P, Cu balance. 15% boosts fluidity & wettability for seamless joints, reducing porosity & cold solder defects. Enhances shock resistance, extending lifespan of HVAC/refrigeration systems Solidus 1193°F (645°C), liquidus 1472°F (800°C), fluidity rating 3. 0.001"-0.003" joint clearance. Silver enhances fluidity, enabling flow into small gaps for stronger joints and faster brazing Airtight barrier locks out moisture, oxygen, contaminants-prevents Cu/ oxidation, preserves flux activity (vital for self-fluxing). Moisture/- for long-term storage BCuP-5 silver brazing rods work reliably in home and industrial use, ideal for high-strength, parts-air-conditioners, HVAC, refrigerators, freezers, compressors, motors-ensuring joints BCuP-5 needs no extra flux for copper-to-copper; use flux for copper-brass, copper-steel and other dissimilar metals. Clean surfaces with a wire brush first; wear heat- gloves and goggles Color: As shown Material: Copper Package Contents: 10 pcs * silver solder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.