Zinc / Zamak Alloys. 1 = Most desirable, 5 = Least desirable.

Zinc ZAMAK
No. 2 No. 3 No. 5 No 7 ZA-8 ZA-12 ZA-27
Resistance to Hot Cracking 1 1 2 1 2 3 4
Pressure Tightness 3 1 2 1 3 3 4
Casting Ease 1 1 1 1 2 3 3
Part Complexity 1 1 1 1 2 3 3
Dimensional Accuracy 4 2 2 1 2 3 4
Dimensional Stability 2 3 3 2 2 2 1
Corrosion Resistance 2 3 3 2 2 2 1
Resistance to Cold Defects 2 2 2 1 2 3 4
Machining ease and Quality 1 1 1 1 2 3 4
Polishing Ease and Quality 2 1 1 1 2 3 4
Electroplating Ease and Quality 1 1 1 1 1 2 3
Anodizing 1 1 1 1 1 2 2
Chemical Coat 1 1 1 1 2 3 3

Aluminum Alloys. 1 = Most desirable, 5 = Least desirable.

360 380 383 384 390 413
Resistance to Hot Cracking 1 2 1 2 4 1
Pressure Tightness 2 2 2 2 4 1
Die filling capacity 3 2 1 1 1 1
Anti-Soldering to the die 2 1 2 2 2 1
Corrosion Resistance 2 4 3 5 3 2
Machining ease and Quality 3 3 2 3 5 4
Polishing Ease and Quality 3 3 3 3 5 5
Electroplating Ease and Quality 2 1 1 2 3 3
Anodizing 3 3 3 4 5 5
Chemical Coat 3 4 4 5 5 3
Strength at elevated temp 1 3 2 2 3 3