Alloy

Heat Treating

Ultimate Tensile Strength
KSI

Min. Yield Strength Set @ 2% KSI

Elongation %

Hardness Rockwell E Scale 1/16 Ball

Pressure Tightness

Machinability

Aluminum Alloys

319.0

T6

36

24

2.0

85.5

B

A

355.0

T51

28

23

1.5

76.0

A

C

355.0

T6

35

25

3.0

85.5

A

B

C355.0

T6

39

29

5.0

89.0

A

B

356.0

T51

25

20

2.0

71.0

A

C

356.0

T6

33

24

3.5

79.0

A

A

A356.0

T51

26

18

3.0

71.0

A

C

A356.0

T6

40

30

6.0

82.5

A

A

357.0

T51

26

17

3.0

80.0

B

C

357.0

T6

45

35

3.0

91.0

B

B

A357.0

T6

45

35

3.0

89.0

B

B

380.0

None

46

23

3.5

85.5

B

C

712.0

*

35*

25*

5.0*

82.5

C

A

712.0 also known as D712, D612, and 40E

Zinc Alloys

ZA3

None

41

- -

10.0

87.0

C

C

ZA8

None

34

30

1.5

95.5

C

C

ZA12

None

43

30

2.0

93.0

C

B

ZA27

None

61

46

9.5

100.0

C

B

These values are for separately cast test bars and are typical values.