TOYOTA 3Y PISTON[e-Catalog]

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/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 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

Quenching

Tempering

T5

180-205°C  8hr

T6

460-510°C

180-205°C  8hr