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Glossary » Materials » Alloys » Magnesium Alloy » ASTM AZ91C-T6
ASTM AZ91C-T6 is categorized as Magnesium Alloy. It is composed of (in weight percentage) 8.70% Aluminum (Al), 0.13% Manganese (Mn), 0.70% Zinc (Zn), and the base metal Magnesium (Mg). It is usually used in sand casting and permanent mold casting. Another common designation of ASTM AZ91C-T6 magnesium alloy is UNS S13800.
Magnesium is a silvery-white metal that is principally used as an alloy element for aluminum, lead, zinc, and other nonferrous alloys. Magnesium is among the lightest of all the metals, and also the sixth most abundant on earth. Magnesium is ductile and the most machinable of all the metals. Magnesium has a protective film to protect against corrosion, however it is easily corroded by chlorides, sulfates, and other chemicals, therefore magnesium is often anodized to improve its corrosion resistance.

The typical elastic modulus of magnesium alloys at room temperature (25°C) is about 44.8 GPa. The typical density of magnesium alloys ranges from 1.77 to 1.83 g/cm3. The typical tensile strength varies between 152 and 379 MPa. The wide range of ultimate tensile strength is largely due to different heat treatment conditions.

Additional Information
Other common Magnesium Alloys include ASTM AM100A-T61, ASTM AM60A-F, ASTM AS41A-F, ASTM AZ10A-F, ASTM AZ21X1-F, ASTM AZ31B-F, ASTM AZ31B-H24, ASTM AZ31C-F, ASTM AZ61A-F, ASTM AZ63A-T6, ASTM AZ80A-T5, ASTM AZ81A-T4, ASTM AZ91A-F, ASTM AZ91B-F, ASTM AZ92A-T6, ASTM EZ33A-T5, ASTM HK31A-H24, ASTM HK31A-T6, ASTM HM21A-T8, ASTM HM31A-F, ASTM HZ32A-T5, ASTM K1A-F, ASTM M1A-F, ASTM PE, ASTM QE22A-T6, ASTM QH21A-T6, ASTM ZE41A-T5, ASTM ZE63A-T6, ASTM ZH62A-T5, ASTM ZK21A-F, ASTM ZK40A-T5, ASTM ZK51A-T5, ASTM ZK60A-T5, ASTM ZK61A-T5, and ASTM ZK61A-T6.