1, good electrical conductivity, thermal conductivity, corrosion resistance and processing performance: containing less impurities to reduce electrical conductivity, thermal conductivity, trace amounts of oxygen on the electrical conductivity, thermal conductivity and processing and other properties have little impact.
2, light weight, good flexibility, easy to construct.
3, better corrosion resistance, can be in a longer period of time, to ensure the waterproof effect of the tunnel.
4, good mechanical properties: good plasticity in the hot state, cold plasticity is still available.
