E3D Volcano nozzles are super fast printing nozzles for use with the Volcano block and packs to print large layer heights and at extremely high flow rates.
Volcano nozzles have extra long heated melt zones for ultimate filament melt speeds. The nozzles have a carefully crafted internal geometry to optimize flow and throughput, as well as ensuring the nozzle tip is appropriately sized for flattening down extra wide printed traces.
Copper has more than 3x the thermal conductivity of brass, and the copper alloy we use has been hardened and treated to reduce the oxidation that occurs in copper at high temperatures. The higher thermal conductivity will also slightly increase your heat-up times, and can provide tighter temperature control.
This copper-alloy is very temperature resilient, and will not start to soften or anneal until way beyond 500°C, making it perfect for the high-temperature printing that other nozzles can't handle.