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Daf 120mm Piston
|
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 |
|
Heat Treatment | Tensile Strength(kg/m3) | 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 Confficient | Specific Gravity | ||
20-100 | 20-200 | 20-300 | ||
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 |
Quenching | Tempering |
T5 | 180-205 8hr | |
T6 | 460-510 | 180-205 8hr |
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