Of copper is not active, why not for cooking utensils,
but also more brittle and mixed with heavy metals, the same is not for
bronze alloy of tin and copper, brass and copper zinc alloy, although the hardness increases,
the price is expensive, so it is not suitable for cooking, but due to the good thermal conductivity, suitable for hot pot.
Copper density, low hardness, easy to wear, easy to deformation
