- 铝合金 lǚhéjīn aluminum alloy
- 钛合金 tàihéjīn titanium alloyan alloy containing a mixture of titanium and other chemical elements, known for high tensile strength and corrosion resistance.
- 镁合金 měihéjīn magnesium alloya lightweight metal alloy containing magnesium as the main component, commonly used in manufacturing for its strength and low weight.
- 锆合金 gàohéjīn zircaloy