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
t (mm) from to	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
Fbru (Mpa)	2.0	836	836
Fbry (Mpa)	1.5	525	525
Fbry (Mpa)	2.0	649	635
e (%)	LT	8	7	6	5	5	4
e (%)	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

Aviometal