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Typical values for separately cast test bars. A=Excellent, B=Good, C=Fair
 
ALUMINUM ALLOYS
Alloy Heat
Treating
Ultimate
Tensil
Strength
KSI
Min. Yield
Strength
Set @ 2%
KSI
Elongation
% in 2"
Hardness
Rockwell
E Scale
1/16 Ball
Pressure
Tightness
Machinability

319.0
355.0
355.0
C355.0
356.0
356.0
A356.0
*A356.0
357.0
357.0
A357.0
380.0

T6
T51
T6
T6
T51
T6
T51
T6
T51
T6
T6
NONE

36
28
35
39
25
33
26
40
26
45
45
46

24
23
25
29
20
24
18
30
17
35
35
23

2.0
1.5
3.0
5.0
2.0
3.5
3.0
6.0
3.0
3.0
3.0
3.5

85.5
76.0
85.5
89
71
79
71
82.5
80
91
89
85.5

B
A
A
A
A
A
A
A
B
B
B
B

A
C
B
B
C
A
C
A
C
B
B
C

ZINC ALLOYS

ZA3
ZA8
*ZA12
ZA27

NONE
NONE
NONE
NONE

41
34
43
61

-
30
30
46

10.0
1.5
2.0
9.5

87
95.5
93
100

C
C
C
C

C
C
B
B

*Preferred by plaster mold process



 

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