AA 2219 T851 Aluminum Alloy – High Strength, Temperature‑Resistant Grade

Aluminum Alloy AA 2219, an age-hardenable alloy is produced with a copper additive. It is well-known for its excellent structural strength and it’s used for numerous high temperature applications. It is a suitable alloy for many metalworking processes including machining, forming, heat treatment, cold working, and more.

Properties

General

Property	Value	Condition	Related Standards
Density	2.84 g/cm³	T851	AA Standards, ASTM B209, ASTM B211

Mechanical

Property	Value	Condition	Related Standards	Comment
Bending Fatigue Strength	105.0 MPa	T851	AA Standards
Elastic modulus	73.0 GPa	T851	AA Standards, ASTM B209, ASTM B211
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 2000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 2000 Series Aluminium
Shear modulus	26.0 - 27.5 GPa			Typical for Wrought 2000 Series Aluminium
Tensile strength	395.0 MPa	T851	AA Standards, ASTM B209, ASTM B211
	400.0 MPa	T851	AA Standards, ASTM B211
	405.0 MPa	T851	AA Standards, ASTM B209
	415.0 MPa	T851	AA Standards, ASTM B209
	425.0 MPa	T851	AA Standards, ASTM B209
	455.0 MPa	T851	AA Standards

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.23e-05 1/K	T851	AA Standards, ASTM B209, ASTM B211
	100 °C	2.23e-05 1/K	T851	AA Standards, ASTM B209, ASTM B211
Melting point		545.0 - 645.0 °C	T851	AA Standards, ASTM B209, ASTM B211
Specific heat capacity		816.0 - 963.0 J/(kg·K)			Typical for Wrought 2000 Series Aluminium
Thermal conductivity		113.0 - 172.0 W/(m·K)	T851	AA Standards, ASTM B209, ASTM B211

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	16000000.0 - 26000000.0 S/m	T851	AA Standards, ASTM B209, ASTM B211
Electrical resistivity	3.85e-08 - 6.25e-08 Ω·m	T851	AA Standards, ASTM B209, ASTM B211

Chemical properties

Property	Value	Condition	Related Standards
Copper	5.8 - 6.8 %	T851	AA Standards, ASTM B209, ASTM B211
Iron	0.30 %	T851	AA Standards, ASTM B209, ASTM B211
Magnesium	0.02 %	T851	AA Standards, ASTM B209, ASTM B211
Manganese	0.2 - 0.4 %	T851	AA Standards, ASTM B209, ASTM B211
Silicon	0.2 %	T851	AA Standards, ASTM B209, ASTM B211
Titanium	0.02 - 0.1 %	T851	AA Standards, ASTM B209, ASTM B211
Vanadium	0.05 - 0.15 %	T851	AA Standards, ASTM B209, ASTM B211
Zinc	0.1 %	T851	AA Standards, ASTM B209, ASTM B211
Zirconium	0.1 - 0.25 %	T851	AA Standards, ASTM B209, ASTM B211

Technological properties

Property
Brazing	general: no brazing is known or developed
Corrosion properties	Stress corrosion cracking: Betriebsschäden in Gebieten mit Zugspannungen quer zur Kornstruktur, Eingeschränkte Schäden an Laborproben (T31, T351, T3510, T3511, T37), kein Schadensfall im Betrieb, eingeschränkte Schäden bei den Labortests (T81, T851, T8510, T8511), general: sufficient, in principle it should be protected
General machinability	General: good to acceptable
Workability	general (condition): poor(T31, T351, T3510, T3511), not suitable (T37, T81, T851, T8510, T8511, T87)

AA 2219 T81 Aluminum Alloy: Superior Strength for High-Temperature Applications AA 2219‑T87 Aluminum Alloy – High‑Strength, Heat‑Resistant Grade

Metal