ZINC ALLOY SELECTOR

Intricate or long cast-in holes?
How about ready to use cast-on threads?

We can do it all and cut your
machining requirements to a minimum.

Award winning Electronic Meter Housing 
designed with the help of 
E. Toman & Company’s engineering department.

Let E. Toman & Company help you choose one of 
these five zinc alloys for your next project.

ALLOY
#3
#5
#7
#2
ZA-8
Mechanical Properties
Die Cast
Die Cast
Die Cast
Die Cast
Die Cast
Ultimate Tensile Strength
(psi X 103)
41
48
41
52
54
Yield Strength
0.2% Offset
(psi X 103)
–
–
–
–
42
Elongation
(% in 2”)
10
7
13
7
6-10
Shear Strength
(psi X 103)
31
38
31
46
–
Hardness
(Brinell)
82
91
80
100
95-110
Impact Strength
(ft-lb)
432
482
432
352
313
Fatigue Strength
Rotary Bend
6.9
8.2
6.8
8.5
–
Comprehensive
Yield Strength
0.1% Offset
604
874
604
934
–
Most commonly used zinc alloy
Added 1% copper. Stronger harder than #3
Higher ductility. Improved surface finish
3% copper hardness of ZA-8 at lower cost
High aluminum content, more expensive

For more information on Physical Properties, Chemical Specifications, and / or Industry Standards, please contact us by phone at 708-447-3501, 

The designers considered producing the housing as two aluminum parts, but zinc die casting allowed production to tighter tolerances with zero draft in two areas. The single zinc component, produced by E. Toman & Company, significantly reduced assembly costs and the machining that would have been required with the two parts.