CHEMICAL COMPOSITION(%)
|
Cu |
Mg |
Ni |
Si |
Ti |
Fe |
Zn |
Mn |
AC 8A |
0.8-1.3 |
0.7-1.3 |
1.0-2.5 |
11-13 |
<0.2 |
<0.7 |
<0.1 |
<0.1 |
AC 8B |
2.0-4.0 |
0.5-1.5 |
0.2-1.5 |
8.5-10.5 |
<0.2 |
<1.0 |
<0.5 |
<0.5 |
AC 8C |
2.0-4.0 |
0.5-1.5 |
- |
8.5-10.5 |
<0.2 |
<1.0 |
<0.5 |
<0.5 |
MECHANICAL PROPERTIES
|
Heat Treatment |
Tensile Strength(kg/m) |
Hardness(HRB) |
Elongation(%) |
AC 8A |
T5 |
>22 |
58-68 |
>0.5 |
T6 |
>28 |
62-74 |
>0.5 |
|
AC 8B |
T5 |
>23 |
58-68 |
>0.5 |
T6 |
>28 |
64-74 |
>0.5 |
|
AC 8C |
T5 |
>25 |
55-65 |
>0.5 |
THERMAL EXPANSION&SPECIFIC GRAVITY
|
Thermal Expansion Confficient |
Specific Gravity |
||
20-100°C |
20-200°C |
20-300°C |
|
|
AC 8A |
19.2*0.0001 |
20.6*0.0001 |
21.9*0.0001 |
2.73 |
AC 8B |
20.2*0.0001 |
21.6*0.0001 |
23.1*0.0001 |
2.75 |
AC 8C |
20..2*0.0001 |
21.6*0.0001 |
23.1*0.0001 |
2.75 |
HEAT TREATMENT
Heat Treatment |
Quenching |
Tempering |
T5 |
|
180-205°C 8hr |
T6 |
460-510°C |
180-205°C 8hr |
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