Physical Properties
|
Alloy No. 2 |
Alloy No. 3 |
Alloy No. 5 |
ZA 8 |
**Aluminum #380 |
| Density lb/cu (a) 70° F |
0.24 |
0.24 |
0.24 |
0.227 |
0.098 |
| Melting Rage (° F) |
715-734 |
719-728 |
717-727 |
707-759 |
1000-1100 |
| Elec. Conductivity % IACS 25 |
27 |
26 |
27.7 |
27 |
|
| Therm. Conductivity BTU/ft hroF (a) 75-198°F |
60.5 |
65.3 |
62.9 |
66.3 |
55.6 |
| Specific Heat BTU/ft hroF (a) 75-198°F |
0.1 |
0.1 |
0.1 |
0.104 |
0.23 |
| Coeff Of Therm. Exp. in. in/°F (a) 68-212°F |
15.4 |
15.2 |
15.2 |
12.9 |
11.8 |
| Pattern or Die Shrinkage in/in |
0.006 |
0.006 |
0.006 |
0.007 |
0.006 |
Composition
|
Alloy No. 2 |
Alloy No. 3 |
Alloy No. 5 |
ZA 8 |
**Aluminum #380 |
| Pb lead |
0.004* |
0.004* |
0.004* |
0.004* |
– |
| Fe Iron |
0.075* |
0.075* |
0.075* |
0.10* |
2 |
| Cd Cadmium |
0.003* |
0.003* |
0.003* |
0.003* |
– |
| Al Aluminum |
3.9-4.3 |
3.9-4.3 |
3.9-4.3 |
8.0-8.8 |
– |
| Mg Magnesium |
0.025-0.050 |
0.025-0.050 |
0.03-0.06 |
0.015-0.030 |
0.1 |
| Cu Copper |
2.6-2.9 |
0.10* |
0.75-1.25 |
0.8-1.3 |
3.0-4.0 |
| Sn Tin |
0.002* |
0.002* |
0.002* |
0.002* |
0.35 |
| Zn Zinc |
Bal. |
Bal. |
Bal. |
Bal. |
3 |
| Others |
*maximum |
|
|
|
|
Mechanical Properties
|
Alloy No. 2 |
Alloy No. 3 |
Alloy No. 5 |
ZA 8 |
**Aluminum #380 |
|
Die Cast |
Aged |
Die Cast |
Aged |
Die Cast |
Aged |
Die Cast |
Aged |
Die Cast |
Aged |
| Utl. Ten Str., ksi |
52 |
48 |
41 |
35 |
48 |
39 |
54 |
43 |
46 |
– |
| Yld. Str. 0.2% offset,ksi |
– |
– |
– |
– |
– |
– |
42 |
32 |
23 |
– |
| Elong. % 2 in., % |
7 |
2 |
10 |
16 |
7 |
13 |
6-10 |
20 |
3.5 |
– |
| Shear Str. ksi |
46 |
– |
31 |
– |
38 |
– |
– |
– |
28 |
– |
| Hardness BHN |
100 |
98 |
82 |
72 |
91 |
80 |
95-110 |
91 |
80 |
– |
| Impact Str., ft-lb. |
35A |
5A |
43A |
41A |
48A |
40A |
31B |
13B |
3 |
– |
| Fatigue tr. Rotary Bend. ksi 5×108 cycles |
8.5 |
– |
6.9 |
– |
8.2 |
– |
– |
– |
20 |
– |
| Comp. Yld. Str. 0.1% offset, ksi |
93C |
– |
60C |
– |
87C |
– |
– |
– |
– |
– |
Zinc and ZA Alloy Specifications (Federal QQ-)
| Comm’l |
UNS |
ASTM B86 |
Former SAE J469 |
Zin 363a |
DIN |
JIS |
| 2 |
Z35541 |
AC43A |
921 |
AC43A |
1743 |
|
| 3 |
Z33520 |
AG40A |
903 |
AG40A |
1743 |
ZDC-2 |
| 5 |
Z35531 |
AC41A |
925 |
AC41A |
1743 |
ZDC-1 |
| 7 |
Z33523 |
AG40B |
|
AG40B |
|
|
| ZA-8 |
Z35636 |
|
|
|
|
|
| ZA-12 |
Z35631 |
|
|
|
|
|
| ZA-27 |
Z35841 |
|
|
|
|
|
A. 0.25 in. square specimen
B. 10mm square specimen
C. Compression strength
*1/4 inch unnotched Charpy
*Magnesium may be as low as 0.015% provided that the lead, cadmium, and tin do not exceed 0.003, 0.003, and 0.001% respectively.
*For the majority of the commercial applications, a copper content in the range from 0.25 to 0.75% will not adversely affect the serviceability of die castings and should not serve as a basis for rejection.
Symbols Key:
UNS – United Numbering System
ASTM – American Society for Testing Materials
FED – Federal Specifications
SAE – Society for Automotive Engineers
JIS – Japenses Industrial Standard
DIN – German Industrial Standard
**Aluminum #380 is listed for comparison only
Proudly Made in the U.S.A.