Considering the ignition-proof ability and mechanical property,the main composition of a new ignition-proof magnesium alloy is suggested as follows: Mg-4%Zn-3.5%Y-0.8%Ca.

• 在综合考虑阻燃能力和力学性能的基础上；按照致密氧化膜的形成条件；选定Mg-4%25Zn-3.；5%25Y-0