Zamak 27 or ZA 27 has the highest aluminum content, highest strength, highest melting point, and lowest density of the ZA group. This zinc alloy exhibits excellent bearing properties, which allow bearings to be designed into the casting in some applications.

Zamak 27 or ZA-27, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. The number 27 represents the approximate percentage of aluminum.

• ZA-27 has the highest aluminum content, highest strength, highest melting point, and lowest density of the ZA group.
• This zinc alloy exhibits excellent bearing properties, which allow bearings to be designed into the casting of some applications.
• Its relatively high casting temperature requires the cold-chamber process.