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Data sheet AA2219

General properties

Aluminium-copper alloy, typical of aerospace, used also for other specific applications,  whose main properties are high strength up to elevated temperatures, good creep strength, good weldability and good dimensional stability

Generally used in form of rolled plates, up to 300 mm thickness.

Typical applications

Structural components with demanding requirements in terms of stability, with service temperatures generally high, or for cryogenic applications.

Parts to be embodied into welded structures.

Moulding dies for rubber.

Minimum mechanical properties at room temperature

t (mm) from to

 

da

6

25

51

76

102

127

a 25 51 76 102 127 152
Rm (Mpa)

 

L 421 421        
LT 428 428 428 414 407 394
ST            
Rp0.2 (Mpa) L 325 325        
LT 318 318 311 304 297 290
ST            
Rc0.2 (Mpa) L 325 325        
LT 331 331        
ST            
t (Mpa) 249 249        
Fbru (Mpa) 1.5 656 656        
2.0 836 836        
Fbry (Mpa) 1.5 525 525        
2.0 649 635        
e (%) LT 8 7 6 5 5 4
E 72503 Ec 74574 G 27620  
Poisson 0.33          

Physical properties

Specific gravity 2.85 g/cm3 at 20 °C

Thermal conductivity

at 20 °C: 117 W/m °C

at 100 °C: 133 W/m °C

at 200 °C: 137 W/m °C

at 300 °C: 141 W/m °C

Specific heat

at 20 °C: 0.205 Cal/kg °C

at 100 °C: 0.215 Cal/kg °C

at 200 °C: 0.230 Cal/kg °C

at 300 °C: 0.240 Cal/kg °C

Linear thermal expansion coefficient

At 20 °C: 22.1x10-6 mm/mm °C

From 20 to 100 °C: 22.7

From 20 to 200 °C: 23.9

From 20 to 300 °C: 25.0

Technological properties

Ease of machining: very good

Ease of polishing: very good

Ease of welding: good (TIG - MIG)

Fatigue strength

The following graphs show fatigue strength in tension as % of ultimate tensile strength (static) for two notch factors and various stress ratios, following the US data presentation tradition.

For info on symbols see section Info

Fatigue strength in tension

 

Effect of temperature on mechanical properties

Effect of temperature on mechanical propertiesEffect of temperature on mechanical properties

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