铝型材的密度只有2.7g/cm3，约为钢、铜或黄铜的密度(分别为7.83g/cm3，8.93g/cm3)，的1/3。在大多数环境条件下，包括在空气、水(或盐水)、石油化学和很多化学体系中，铝能显示优良的抗腐蚀性。
The density of aluminum profile is only 2.7g/cm3, about 1 / 3 of that of steel, copper or brass (7.83g/cm3 and 8.93g/cm3 respectively). Aluminum exhibits excellent corrosion resistance under most environmental conditions, including in air, water (or brine), petrochemicals, and many chemical systems.
电导率
conductivity
铝型材由于它的优良电导率而常被选用。在重量相等的基础上，铝的电导率近于铜的两倍。
Aluminum profile is often selected because of its excellent conductivity. On the basis of equal weight, the conductivity of aluminum is nearly twice that of copper.
热导量率
Thermal conductivity
铝合金的热导量率大约是铜的50-60%，这对制造热交换器、蒸发器、加热电器、炊事用具，以及汽车的缸盖与散热器皆为有利。
The thermal conductivity of aluminum alloy is about 50-60% of that of copper, which is beneficial to the manufacture of heat exchangers, evaporators, heating appliances, cooking utensils, cylinder heads and radiators of automobiles.