|
KAISER ALUMINUM
TECHNICAL REFERENCE LIBRARY
| Technical Data - ALLOY 7049 |
Call 1-800-USE-2011 |
| Chemical Composition
Limits |
Others |
| Weight % |
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Zn |
Ti |
Each |
Total |
| Minimum |
- |
- |
1.2 |
- |
2.0 |
0.10 |
7.2 |
- |
- |
- |
| Maximum |
|
| 7049 |
0.25 |
0.35 |
1.90 |
0.20 |
2.9 |
0.22 |
8.2 |
0.10 |
0.05 |
0.15 |
| 7149 |
0.15 |
0.20 |
- |
- |
- |
- |
- |
- |
- |
- |
| Typical
Physical Properties |
| Characteristic |
English |
Metric |
| Nominal
Density (68 °F/20 °C) |
0.103
lbs./in.3 |
2.84 Mg/m3 |
| Melting
Range |
890 °F -
1175 °F |
476 °C -
635 °C |
| Specific
Heat (212 °F/100 °C) |
0.23
BTU/lb. - °F |
960 J/kg
- °K |
| Coefficient of Thermal Expansion |
|
13.0
micro in./in.-°F |
23.4
micro m/m -°K |
|
|
3.78 x 10-5in.3/in.3
-°F |
68 x 10-6m3/m3
-°K |
| Thermal Conductivity (68°F/20°C) |
T6,T651 |
75
BTU/ft. - hr. - °F |
130 W/m -
°K |
| T7, T7351 |
89
BTU/ft. - hr. - °F |
154 W/m -
°K |
| Electrical Conductivity (68°F/20°C) |
Equal Volume |
T6,T651 |
33% IACS |
| T7, T7351 |
38% IACS |
| Equal Weight |
T6,T651 |
105% IACS |
| T7, T7351 |
- |
| Typical Mechanical Properties
(Longitudinal) |
| |
Tensile
(.500" Dia. Specimen) |
Hardness |
Shear |
Fatigue |
Modulus |
| Temper |
Yield |
Ultimate |
Elongation/4D |
|
Ultimate
Shearing Strength |
Endurance
Limit - R.R. Moore Type |
Modulus
of Elasticity |
| KSI |
MPa |
KSI |
MPa |
% |
|
KSI |
MPa |
KSI |
MPa |
KSI
x 103 |
Gpa |
| T6, T6511 |
86 |
592 |
94 |
648 |
5 |
170 |
- |
- |
- |
- |
10.5 |
72.5 |
| T74, T74511 |
77 |
530 |
85 |
586 |
7 |
160 |
43 |
296 |
- |
|
10.5 |
72.5 |
| T76, T76511 |
70 |
483 |
78 |
538 |
7 |
150 |
45 |
310 |
- |
|
10.5 |
72.5 |
| T73, T73511 |
64 |
411 |
74 |
510 |
7 |
140 |
40 |
276 |
43* |
295* |
10.5 |
72.5 |
| *In 10E7
cycles, axially loaded specimens tested at R = 0.1 |
| Comparative Characteristics |
| Temper |
Corrosion
Resistance |
|
|
|
|
Weldability4 |
| General1 |
Stress2 |
Gas |
Arc |
Spot |
| T6,T6511 |
C |
C |
D |
C |
B |
D |
D |
D |
B |
| T73, T73511 |
C |
B |
D |
B |
B |
D |
D |
D |
B |
| T74, T74511 |
| T76, T76511 |
| 1 Ratings A through E are relative
ratings in decreasing order of merit, based on exposures to sodium chloride solution by
intermittent spraying or immersion. Alloys with A and B ratings can be used in industrial
and seacoast atmospheres without protection. Alloys with C, D and E ratings generally
should be protected at least on faying surfaces. |
| 2 Stress-corrosion cracking ratings
are based on service experience and laboratory tests of specimens exposed to the 3.5%
sodium chloride alternate immersion test. |
| A= |
No known instance of failure in service or in
laboratory tests. |
| B= |
No known instance of failure in service;
limited failures in laboratory tests of short transverse specimens. |
| C= |
Service failures with sustained tension
stress acting in short transverse direction relative to grain structure; limited failures
in laboratory tests of long transverse specimens. |
| D= |
Limited service failures with sustained
longitudinal or long transverse |
|
|
| 3 Ratings A through D for Workability
(cold), A through E for Machinability and A through C for Anodize Response, are relative
ratings in decreasing order of merit. |
| 4 Ratings A through D for Weldability
and Brazeability are relative ratings defined as follows: |
| A= |
Generally weldable by all commercial
procedures and methods. |
| B= |
Weldable with special techniques or for
specific applications that justify preliminary trails or testing to develop welding
procedure and weld performance. |
| C= |
Limited weldability because of crack
sensitivity or loss in resistance to corrosion and mechanical properties. |
| D= |
No commonly used welding methods have been
developed. |
|
| Applicable
Specifications |
|
| Cold Finished |
Extruded |
| |
AMS 4157 |
| |
AMS 4159 |
|
