Properties of
Aluminium Alloy 5251
Mechanical Properties of
Aluminium Alloy 5251
Table 2. Typical mechanical properties
for aluminium alloy 5251
|
Temper |
H22 |
H24 |
H26 |
0 |
|
Proof Stress 0.2%
(MPa) |
165 |
190 |
215 |
80 |
|
Tensile Strength
(MPa) |
210 |
230 |
255 |
180 |
|
Shear Strength
(MPa) |
125 |
135 |
145 |
115 |
|
Elongation A5
(%) |
14 |
13 |
9 |
26 |
|
Hardness Vickers
(HV) |
65 |
70 |
75 |
46 |
Physical Properties of
Aluminium Alloy 5251
Table 3. Typical physical properties
for aluminium alloy 5251
|
Property |
Value |
|
Density |
2.69
g/cm3 |
|
Melting
Point |
625°C |
|
Modulus of
Elasticity |
70
GPa |
|
Electrical
Resistivity |
0.044x10-6
Ω.m |
|
Thermal
Conductivity |
134
W/m.K |
|
Thermal
Expansion |
25x10-6
/K |
Alloy Designations
Aluminium alloy
5251 also corresponds to the following
designations:
·
Al Mg2
·
Al 2.0Mg 0.3Mn
Fabrication of
Aluminium Alloy 5251
Welding
Aluminium alloy
5251 is a readily weldable alloy.
The recommended filler wire is 5356 when welding Aluminium alloy
5251 to itself, 6XXX series alloys, 7XXX
series alloys and most other 5XXX alloys.
When welding alloy Aluminium alloy
5251 to 5005, 5020, 1XXX series or 3XXX series
alloys, the recommended filler wire is 4043.
Fabrication Response
Table 4. Typical fabrication response
for aluminium alloy 5251
|
Process |
Rating |
|
Workability –
Cold |
Very
Good |
|
Machinability |
Average |
|
Weldability –
Gas |
Very
Good |
|
Weldability –
Arc |
Very
Good |
|
Weldability –
Resistance |
Very
Good |
|
Brazability |
Poor |
|
Solderability |
- |
Temper
The common tempers for Aluminium alloy
5251 are:
·
H22 - Work hardened and partially annealed to a quarter hard
state
·
H24 - Work hardened and partially annealed to a half hard
state
·
H26 - Work hardened and partially annealed to a three quarter hard
state
·
0 – Wrought and fully annealed |