FabDigit

2A12 vs 2024 and 2 more: properties

2A12202420172011

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

73 GPa10.6 Msi
73.1 GPa10.6 Msi
72.4 GPa10.5 Msi
70 GPa10.2 Msi

Shear Modulus

28 GPa4.1 Msi
28 GPa4.1 Msi
27 GPa3.9 Msi
26 GPa3.8 Msi

Bulk Modulus

75 GPa10.9 Msi
73 GPa10.6 Msi
75 GPa10.9 Msi
69 GPa10 Msi

Tensile Strength (Ultimate)

470 MPa68.2 ksi
483 MPa70.1 ksi
427 MPa61.9 ksi
379 MPa55 ksi

Yield Strength (0.2% offset)

325 MPa47.1 ksi
345 MPa50 ksi
276 MPa40 ksi
296 MPa42.9 ksi

Elongation at Break

19%
18%
22%
15%

Reduction in Area

25%

Compressive Strength

325 MPa47.1 ksi
350 MPa50.8 ksi
276 MPa40 ksi
300 MPa43.5 ksi

Shear Strength

283 MPa41 ksi
283 MPa41 ksi
260 MPa37.7 ksi
221 MPa32.1 ksi

Fatigue Strength (Endurance Limit)

138 MPa20 ksi
138 MPa20 ksi
124 MPa18 ksi
124 MPa18 ksi

Fracture Toughness (K_IC)

37 MPa·√m33.7 ksi·√in
37 MPa·√m33.7 ksi·√in
30 MPa·√m27.3 ksi·√in

Hardness, Brinell

120 HB
120 HB
105 HB
95 HB

Hardness, Rockwell B

75 HRB
75 HRB
65 HRB

Hardness, Vickers

128 HV
137 HV
115 HV

Same in both: Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Density

2.78 g/cm³0.1 lb/in³
2.78 g/cm³0.1 lb/in³
2.79 g/cm³0.1 lb/in³
2.83 g/cm³0.1 lb/in³

Melting Point (Solidus)

502°C936 °F
502°C936 °F
513°C955 °F
541°C1,006 °F

Liquidus Temperature

638°C1,180 °F
638°C1,180 °F
641°C1,186 °F
643°C1,189 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

121 W/m·K69.9 BTU/hr·ft·°F
121 W/m·K69.9 BTU/hr·ft·°F
134 W/m·K77.4 BTU/hr·ft·°F
152 W/m·K87.8 BTU/hr·ft·°F

Specific Heat Capacity

875 J/kg·K0.21 BTU/lb·°F
875 J/kg·K0.21 BTU/lb·°F
873 J/kg·K0.21 BTU/lb·°F
864 J/kg·K0.21 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

23.2 µm/m·K12.9 µin/in·°F
22.9 µm/m·K12.7 µin/in·°F
23.6 µm/m·K13.1 µin/in·°F
22.9 µm/m·K12.7 µin/in·°F

Max Service Temperature (continuous)

120°C248 °F
150°C302 °F
120°C248 °F
120°C248 °F

Same in both: Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

30 % IACS
30 % IACS
34 % IACS
39 % IACS

Electrical Resistivity

5.75×10⁻⁸ Ω·m2.26 µΩ·in
5.75×10⁻⁸ Ω·m2.26 µΩ·in
5.07×10⁻⁸ Ω·m2 µΩ·in
4.42×10⁻⁸ Ω·m1.74 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

30 / 100
32 / 100
33 / 100
25 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.69 V

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

72 / 100
72 / 100
78 / 100
100 / 100

Machinability Rating (AISI 1212 = 100 %)

70%
70%
70%
300%

Weldability

15 / 100
20 / 100
20 / 100
10 / 100

Formability (cold)

45 / 100
40 / 100
45 / 100
25 / 100

Castability

20 / 100
10 / 100
25 / 100

Brazeability / Solderability

15 / 100
15 / 100
15 / 100
10 / 100

Same in both: Polishability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

210 MJ/kg90,284 BTU/lb
200 MJ/kg85,985 BTU/lb
200 MJ/kg85,985 BTU/lb
200 MJ/kg85,985 BTU/lb

Embodied Carbon (primary production)

13.5 kg CO₂/kg
12.5 kg CO₂/kg
12 kg CO₂/kg
12.5 kg CO₂/kg

Embodied Water

1,200 L/kg144 gal/lb
1,100 L/kg132 gal/lb
1,200 L/kg144 gal/lb
1,100 L/kg132 gal/lb

Typical Recycled Content

15%
10%
30%
20%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

169 kN·m/kg
174 kN·m/kg
153 kN·m/kg
134 kN·m/kg

Specific Stiffness (E / density)

26.3 MN·m/kg
26.3 MN·m/kg
25.9 MN·m/kg
24.7 MN·m/kg

Modulus of Resilience

723 kJ/m³
814 kJ/m³
526 kJ/m³
626 kJ/m³

Thermal Diffusivity

49.7 mm²/s
49.7 mm²/s
55 mm²/s
62.2 mm²/s

Thermal Shock Resistance Index

34
35
33
36

Strength versus weight

Yield strength against density for every aluminum grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

20501002005002.22.42.62.83Density (g/cm³)Yield strength (MPa) — log scale2017201120242A12

Manufacturing and finishing

Capability2A12202420172011
CNC machiningYesYesYes
Sheet metalYesYesYes
Default conditionT3
Relative cost$$$ Premium$$$ Premium$$$ Premium$$$ Premium
Min. machined wall0.8 mm0.8 mm0.5 mm
Best machined surfaceRa 0.8 µmRa 0.8 µmRa 0.8 µm
Anodizing Type IIYesYesYes
CerakoteYesYesYes
Chem Film (Alodine)YesYesYes
DLCYesYesYes
E-CoatingYesYesYes
ElectropolishingYesYesYes
Hard Anodize Type III w/ PTFEYesYesYes
Hard Anodizing Type IIIYesYesYes
Nickel PlatingYesYesYes
PTFE CoatingYesYesYes
PaintingYesYesYes
Powder CoatingYesYesYes

They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 2A12 and 2024 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.

Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.