ZA 8, 12 and 27 are a family of high performance zinc aluminum alloys that offer designers, specifiers and engineers superior properties, performance and cost effectiveness. ZA alloys should be considered as a viable alternative to aluminum, brass, bronze and iron.
ZA alloys have developed extensive field acceptance in applications requiring strength, hardness, bearing and wear properties and cost effectiveness.
Compared with Iron: ZA alloys produce castings having superior detail, closer tolerances, thinner sections and better surface finish. ZA castings are not prone to residual stresses, warping, or hardspotting. They have excellent machinability with low tool wear and require no protective plating or galvanizing. ZA8 and 12 are approved as antisparking which allows their use in electrical and mechanical fitting in explosion proof environments. Their ease in handling in non-ferrous foundries offers faster delivery times and the ability to manufacture short runs.
Compared with Aluminum: ZA alloys can substitute for aluminum where low strength, galling, poor wear resistance, poor impact properties or pressure tightness are problems. ZA alloys do not require hard anodizing, heat treatment or impregnation. The alloys machine similarly to aluminum but at speeds and feed rates approaching free machining brass.
Compared with Bronze: ZA foundry alloys offer viable alternatives to bronzes for corrosion resistance, bearing and wear properties and strength. These materials possess good corrosion resistance to atmospheric conditions, various aqueous solutions and petroleum products.
ZA12 is the first choice as a substitute for aluminum, bronze and iron. ZA12 has a high degree of pressure tightness, bearing and wear properties, dimensional stability and machinability. The alloy is easily polished, painted and plated.