What does AZ91D stand for?

AZ91D is a designation for a magnesium alloy that primarily consists of 9% aluminum and 1% zinc, with the "A" indicating the alloy's aluminum content and "Z" representing the zinc content. The "D" suffix denotes specific characteristics or modifications to the alloy, often related to improved corrosion resistance or mechanical properties. AZ91D is widely used in various applications, including automotive and aerospace components, due to its lightweight and high strength-to-weight ratio.