Propane melting furnace can be heated up to 2642°F / 1450°C and can melt metals such as gold, silver, copper,aluminum, zinc,brass, bronze, tin etc. Crucibles are consumables, so we have two crucibles,one16kg crucible can melt 16KG copper, 30KG gold, 4.8KG aluminum, 19KG silver. the other 6KG crucible can melt 6KG copper,11.2KG gold, 1.8KG aluminum, 7KG silver.