ZINC
Detail Specifications / Descriptions
LIAN CHANG provides all kinds of die casting parts, we are specialized in brass alloy, aluminum alloy and zinc alloy…etc. We can also provide customized design and manufacturing, please contact us if you need professional die casting.
The zinc alloy materials are Zamak3, ZA8, ZA12 and ZA27.
International Standard Compositions of Zinc Die-casting Alloys
Designation
No.2(%)
No.3(%)
No.4(%)
No.5(%)
No.7(%)
ZA-8(%)
ZA-12(%)
ZA-27(%)
Aluminum (Al)
3.9-4.3
3.9-4.3
3.9-4.32
3.9-4.3
3.9-4.3
8.2-8.8
10.8-11.5
25.5-28.0
Magnesium (Mg)
0.025-0.05
0.025-0.05
0.025-0.05
0.03-0.06
0.010-0.02
0.020-0.030
0.020-0.030
0.012-0.020
Copper (Cu)
2.6-2.9
0.10max
0.3-0.4max
0.75-1.25
0.10max
0.8-1.3
0.5-1.2
2.0-2.5
Lead (Pb)
0.004max
0.004max
0.004max
0.004max
0.002max
0.005max
0.005max
0.005max
Cadmium (Cd)
0.003max
0.003max
0.003max
0.003max
0.002max
0.005max
0.005max
0.005max
Tin (Sn)
0.002max
0.002max
0.002max
0.002max
0.001max
0.002max
0.002max
0.002max
Iron (Fe)
0.075max
0.075max
0.075max
0.075max
0.075max
0.065max
0.065max
0.072max
Nickel (Ni)
-
-
-
-
0.005-0.020
-
-
-
Zinc (Zn)
Balance
Balance
Balance
Balance
Balance
Balance
Balance
Balance
Physical Properties of Zinc Alloys
Designation
No.2(%)
No.3(%)
No.4(%)
No.5(%)
No.7(%)
ZA-8(%)
ZA-12(%)
ZA-27(%)
Density(g/cm)
6.6
6.6
6.6
6.6
6.6
6.3
6.0
5.0
Melting Range(C)
379-390
381-387
380-386
380-386
381-387
375-404
377-432
376-484
Electrical Conductivity(%IACS)
25
27
26-27
26
27
27.7
28.3
29.7
Thermal Conductivity(100c,W/m.k)
104.7
113
180.9-113.0
108.9
11.3
114.7
116.1
125.5
Coefficient of Thermal Expansionh(20-100c,um/mm/c)
27.8
27.4
27.4
27.4
27.4
23.3
24.2
26.0
Specific Heat(J/kg.k)
418.7
418.7
418.7
418.7
418.7
435.4
448.0
534.4
Die Shrinkage(mm/mm)
0.006
0.006
0.007
0.006
0.006
0.007
0.0075
0.008
Mechanical Properties of Zinc Alloys
Designation
No.2(%)
No.3(%)
No.4(%)
No.5(%)
No.7(%)
ZA-8(%)
ZA-12(%)
ZA-27(%)
Meehanical Properties
Die Cast
Die Cast
Die Cast
Die Cast
Die Cast
Die Cast
Sand Cast
Die Cast
Sand Cast
Die Cast
Sand Cast
Ultimate Tensile Strength(Mpa)
359
283
317
331
283
372
248-276
400
276-317
421
400-440
Impact Strength(J)
47
58
61
65
58
42
20
28
25
-
47
Elongation(%)
7
10
7
7
13
6-10
1-2
4-7
1-3
1-3
3-6
Hardness(HB)
100
82
92
91
80
95-110
80-90
95-115
90-105
105-125
110-120
Shear Strength(MPa)
317
214
214-262
262
262
275
-
275
-
296
255
Yield Strength(0.2%,MPa)
-
-
221-269
-
-
290
200
317
207
365
365
Fatigue Strength Rotary Bend(5x10 cycle,MPa)
58.6
47.6
48-57
56.5
-
-
-
-
103.5
-
172.5
Compressive Strength(0.1%m,MPa)
641
414
414-600
600
600
252
199
252
199
269
227
Applications
Lock parts
Furniture parts
Hardware parts
Lighting fixtures
Electronic parts
Bicycle / motorcycle / car spare parts
OEM parts and components according to customers' specifications
Cast to finish
CNC machining;
drilling / tapping / broaching / reaming / sanding / polishing / buffing / blast cleaning / vibrating / thermo-debarring / assembly / packaging / outside chemical finishing and painting