文档介绍：436 / Heat Treater’s Guide: Nonferrous Alloys
AZ91 A, AZ91 B, AZ91 C, AZ91 D, AZ91 E
A magnesium-aluminum-zinc alloy
position. Composition Limits of AZ91 A. are die casting alloys used in the as-cast condition (F temper). AZ9 ID is a
Al, Mn min. to Zn. Si max. Cu max. Ni max. high-purity alloy which has excellent corrosion resistance; it is the most
max other. bal monly used magnesium die casting alloy. AZ9 I A and AZ91 B can be
made from secondary metal. reducing the cost of the alloy; they must be
to
Composttion Limitsof AZ91B. used when maximum corrosion resistance is not required. AZ9IE is a
ZIL Si max. Cu max. Ni max, max other, bal Mg high-purity alloy with excellent corrosion resistance used in pressure-tight
Composition Limits of AZBlC. 8. I to Al. Mn min. to I .O sand and permanent mold castings with high tensile strength and moderate
Zn. Si max. Cu max. Ni max. max other (total). bal Mg yield strength. AZ9lC is used in sand and permanent mold castings when
maximum corrosion resistance is not required
Composition Limits of AZ91 D. fo Al, Mn min. to I .O
Zn. Si max. Fe max. Cu max. Ni max. max Corrosion Properties
other (each), bal Mg
For excellent corr