Aerospace AL · 2xxx
Aluminum 2024
Aluminum 2024 is an aerospace aluminum — high fatigue resistance, aerospace. Typical values: 325 MPa yield, 2.78 g/cm³, rated to 150 °C. Available for CNC machining, Sheet metal at FabDigit.
Properties
Typical room-temperature values in the T3 (solution heat treated and cold worked) condition. Metric first, imperial in gray. The bars show where 2024 sits against the other 163 aluminum grades in the catalog.
Datasheet
| Yield strength | 325 MPa47 ksi |
|---|---|
| Tensile strength | 470 MPa68 ksi |
| Hardness | 120 HB |
| Density | 2.78 g/cm³0.1 lb/in³ |
| Specific strength (yield ÷ density) | 117 |
| Min service temp | -200 °C-328 °F |
| Max service temp | 150 °C302 °F |
| Electrical conductivity | 29 % IACS16.8 MS/m |
| Machinability | Excellent90 / 100 |
| Weldability | Not recommended10 / 100 |
| Formability | Poor30 / 100 |
| ISO 513 machining group | N |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other aluminum grades
Strength versus weight in the aluminum family
Yield strength against density for every aluminum grade FabDigit runs. 2024 is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to 2024. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Excellent90 / 100 |
|---|---|
| ISO material group | N.2 |
| Cutting speed (rough / finish) | 260 / 310 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 6× diameter |
| Best surface (machined / polished) | Ra 0.8 / 0.4 µm |
| Hardenable after machining | No |
Sheet metal
| Formability | Fair30 / 100 |
|---|---|
| Weldability | Poor10 / 100 |
Conditions and tempers
How 2024 is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
T3Default Solution heat treated and cold worked (T3) | High-strength sheet formed then aged — aircraft skins, structural sheet | 345 | 483 | 18 | 120 HB |
O Annealed (O) | Softest — parts you will bend or deep-form; not for carrying load | 76 | 186 | 20 | 47 HB |
T4 Solution heat treated, naturally aged (T4) | Medium strength, still bendable — parts formed after machining, rivets | 324 | 469 | 20 | 120 HB |
T351 Solution heat treated, stress-relieved by stretching (T351) | High-strength 2024 plate, stress relieved — stable precision machining | 324 | 470 | 20 | 120 HB |
T3511 Solution heat treated, stress-relieved, minor straightening (T3511) | High-strength extrusions, stress relieved — straight structural shapes | 324 | 470 | 20 | 120 HB |
T851 T8 + stress relieved by stretching (T851) | Maximum-strength plate, stress relieved — thick aerospace machining | 400 | 455 | 8 | 128 HB |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on 2024, ranked by how often they make sense for this grade.
Heat treatment
| Age T6 (Aluminum) | Solution + artificial age to peak strength |
|---|---|
| Age T651 (Aluminum) | T6 + stress relief stretch (plate) |
| Full Anneal | Restore ductility; relieve residual stress; coarsen grain |
| Stress Relief | Reduce residual stress without changing structure |
| Age T73 (Aluminum) | Over-age 7000 for SCC resistance |
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| Glass Bead Blast | Blast |
| Laser Mark | Marking |
| Sand Blast | Blast |
| Vibratory Tumble | Tumble |
| CMM Inspection | Inspection |
| Masking | Masking |
| Tap After Finish | Finish Fix |
| FAI Report | Inspection |
Surface finishes for 2024
Coatings and treatments compatible with aluminum on the processes 2024 runs on. Pick them in the quote configurator or call them out on the drawing.
Passivation
- Electropolishing
Conversion Coating
- Anodizing Type II
- Chem Film (Alodine)
- Hard Anodize Type III w/ PTFE
- Hard Anodizing Type III
Plating
- Electroless Nickel (EN)
- Gold Plating
- Nickel Plating
- Silver Plating
Organic Coating
- Cerakote
- E-Coating
- Epoxy Coating
- Painting
- Powder Coating
- PTFE Coating
PVD Coating
- DLC
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Steel Stamping
- Vibro Engraving / Scribing
Equivalent designations
Standards and trade names that resolve to Aluminum 2024 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A92024
- Aluminum Association
- AA2024
- EN / DIN / Werkstoff-Nr.
- AlCu4Mg1AlCu4MgSi1AW-20243.1355
- GB (China)
- 2A12LY12
- JIS
- A2024Super Duralumin
- Other
- A-U4G1
Stock forms
Raw-material forms FabDigit sources 2024 in, with the common sizes held in North American stock.
- Plate thickness
- 1/4"1/2"3/4"1"
- Bar diameter
- 0.250"0.500"1.000"2.000"
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.