AA Standards Grade 2024 T81

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Description

Aluminum AA 2024, known for its use in aircraft industry, is an alloy that offers excellent strength. When in the annealed condition it is readily formed and has good machinability. Though it has a relatively low level of corrosion resistance, it can be machined to a high finish.

Related Standards

Equivalent Materials

This material data has been provided by AluKey,MakeItFrom.com,ASM Handbook Volume 2 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials,WroughtAl_ElectricalResistivity.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueConditionRelated Standards

Density

2.78 g/cm³

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T81

AA Standards, ASTM B209, ASTM B241

3.0 g/cm³

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T81

2.78 g/cm³

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T81

Mechanical

PropertyTemperatureValueConditionRelated StandardsComment

Elastic modulus

73.0 GPa

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T81

AA Standards, ASTM B209, ASTM B241

Elongation

5.0 %

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T81

AA Standards, ASTM B209, ASTM B241

A50

4.0 %

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T81

AA Standards, ASTM B241

A50

4.0 %

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T81

AA Standards, ASTM B241

A100

5.2 %

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T81

370 °C

100 %

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T81

Elongation in 50 mm

315 °C

75 %

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T81

Elongation in 50 mm

260 °C

55 %

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T81

Elongation in 50 mm

205 °C

23 %

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T81

Elongation in 50 mm

150 °C

11 %

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T81

Elongation in 50 mm

100 °C, -195 °C

8 %

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T81

Elongation in 50 mm

24 °C, 0 °C, -80 °C

7 %

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T81

Elongation in 50 mm

Plane-Strain Fracture Toughnes

22.0 - 35.0 MPa·√m

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Typical for Wrought 2000 Series Aluminium

Poisson's ratio

0.33 [-]

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Typical for Wrought 2000 Series Aluminium

Shear modulus

28.0 GPa

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T81

Tensile strength

460.0 MPa

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T81

AA Standards, ASTM B209

455.0 MPa

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T81

AA Standards, ASTM B241

440.0 MPa

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T81

AA Standards, ASTM B241

520.0 MPa

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T81

370 °C

35 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

315 °C

52 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

260 °C

75 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

205 °C

185 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

150 °C

380 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

100 °C

455 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

24 °C

483 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

0 °C

503 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

-80 °C

510 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

-195 °C

585 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

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Yield strength

400.0 MPa

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T81

AA Standards, ASTM B209, ASTM B241

RP02

385.0 MPa

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T81

AA Standards, ASTM B241

RP02

370 °C

28 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

315 °C

41 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

260 °C

62 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

205 °C

138 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

150 °C

338 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

100 °C

427 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

24 °C

448 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

0 °C

469 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

-80 °C

476 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

-195 °C

538 MPa

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T81

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

450.0 MPa

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T81

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Thermal

PropertyTemperatureValueConditionRelated Standards

Coefficient of thermal expansion

2.3e-05 1/K

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T81

100 °C, 20 °C

2.3199999999999998e-05 1/K

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T81

AA Standards, ASTM B209, ASTM B241

Melting point

505.0 - 635.0 °C

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T81

AA Standards, ASTM B209, ASTM B241

500.0 °C

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T81

Specific heat capacity

870.0 J/(kg·K)

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T81

Thermal conductivity

121.0 - 193.0 W/(m·K)

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T81

AA Standards, ASTM B209, ASTM B241

120.0 W/(m·K)

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T81

Electrical

PropertyValueConditionRelated StandardsComment

Electrical conductivity

17000000.0 - 29000000.0 S/m

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T81

AA Standards, ASTM B209, ASTM B241

22000000 S/m

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T81

Typical/derived value

Electrical resistivity

3.45e-08 - 5.88e-08 Ω·m

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T81

AA Standards, ASTM B209, ASTM B241

4.5e-08 Ω·m

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T81

Typical value

Specific Electrical conductivity

38.0 % IACS

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T81

Typical value

Chemical properties

PropertyValueConditionRelated Standards

Aluminium

90.7 - 94.7 %

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T81

Chromium

0.1 %

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T81

AA Standards, ASTM B209, ASTM B241

Copper

3.8 - 4.9 %

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T81

AA Standards, ASTM B209, ASTM B241

Iron

0.50 %

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T81

AA Standards, ASTM B209, ASTM B241

0.5 %

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T81

Magnesium

1.2 - 1.8 %

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T81

AA Standards, ASTM B209, ASTM B241

Manganese

0.3 - 0.9 %

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T81

AA Standards, ASTM B209, ASTM B241

Other

0.15 %

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T81

Silicon

0.5 %

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T81

AA Standards, ASTM B209, ASTM B241

Titanium

0.15 %

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T81

AA Standards, ASTM B209, ASTM B241

Zinc

0.25 %

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T81

AA Standards, ASTM B209, ASTM B241

Zirconium

0.2 %

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T81

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 (T4,T3, T351, T3510, T3511), d (T6, T861, T81, T851, T8510, T8511), general: sufficient, in principle it should be protected

General machinability

General: poor (O), good to acceptable

Workability

general (condition): poor(T4, T3, T351, T3510, T3511, T6), not suitable (T361, T861, T81, T851, T8510, T8511)