FabDigit

2011 vs 2024 and 2 more: properties

201120242017Alca 5

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

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

Shear Modulus

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

Bulk Modulus

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

Tensile Strength (Ultimate)

379 MPa55 ksi
483 MPa70.1 ksi
427 MPa61.9 ksi
152 MPa22 ksi

Yield Strength (0.2% offset)

296 MPa42.9 ksi
345 MPa50 ksi
276 MPa40 ksi
83 MPa12 ksi

Elongation at Break

15%
18%
22%
2%

Compressive Strength

300 MPa43.5 ksi
350 MPa50.8 ksi
276 MPa40 ksi
85 MPa12.3 ksi

Shear Strength

221 MPa32.1 ksi
283 MPa41 ksi
260 MPa37.7 ksi
95 MPa13.8 ksi

Fatigue Strength (Endurance Limit)

124 MPa18 ksi
138 MPa20 ksi
124 MPa18 ksi
55 MPa8 ksi

Hardness, Brinell

95 HB
120 HB
105 HB
65 HB

Fracture Toughness (K_IC)

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

Hardness, Rockwell B

75 HRB
65 HRB

Hardness, Vickers

137 HV
115 HV

Same in both: Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

541°C1,006 °F
502°C936 °F
513°C955 °F
575°C1,067 °F

Liquidus Temperature

643°C1,189 °F
638°C1,180 °F
641°C1,186 °F
640°C1,184 °F

Thermal

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

Thermal Conductivity

152 W/m·K87.8 BTU/hr·ft·°F
121 W/m·K69.9 BTU/hr·ft·°F
134 W/m·K77.4 BTU/hr·ft·°F
140 W/m·K80.9 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

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

Latent Heat of Fusion

390 J/g168 BTU/lb
390 J/g168 BTU/lb
390 J/g168 BTU/lb
397 J/g171 BTU/lb

Max Service Temperature (continuous)

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

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

39 % IACS
30 % IACS
34 % IACS
38 % IACS

Electrical Resistivity

4.42×10⁻⁸ Ω·m1.74 µΩ·in
5.75×10⁻⁸ Ω·m2.26 µΩ·in
5.07×10⁻⁸ Ω·m2 µΩ·in
4.5×10⁻⁸ Ω·m1.77 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.69 V
-0.69 V
-0.69 V
-0.85 V

Corrosion Resistance

25 / 100
32 / 100
33 / 100
55 / 100

Manufacturability

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

Machinability

100 / 100
72 / 100
78 / 100
88 / 100

Machinability Rating (AISI 1212 = 100 %)

300%
70%
70%
190%

Weldability

10 / 100
20 / 100
20 / 100
45 / 100

Formability (cold)

25 / 100
40 / 100
45 / 100
10 / 100

Brazeability / Solderability

10 / 100
15 / 100
15 / 100
25 / 100

Polishability

55 / 100
55 / 100
55 / 100
35 / 100

Castability

10 / 100
25 / 100
85 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

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

Embodied Water

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

Typical Recycled Content

20%
10%
30%
60%

Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

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

Specific Stiffness (E / density)

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

Modulus of Resilience

626 kJ/m³
814 kJ/m³
526 kJ/m³
49 kJ/m³

Thermal Diffusivity

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

Thermal Shock Resistance Index

36
35
33
13

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 scale20172011Alca 52024

Manufacturing and finishing

Capability201120242017Alca 5
Sheet metalYesYesYes
Default conditionT3
Relative cost$$$ Premium$$$ Premium$$$ Premium$$ Standard
Min. machined wall0.5 mm0.8 mm0.8 mm0.5 mm
Best machined surfaceRa 0.8 µmRa 0.8 µmRa 0.8 µmRa 0.8 µm

Both are offered for CNC machining. Both take the same 16 finishes: Anodizing Type II, Cerakote, Chem Film (Alodine), DLC, E-Coating, Electroless Nickel (EN), Electropolishing, Epoxy Coating, Gold Plating, Hard Anodize Type III w/ PTFE, Hard Anodizing Type III, Nickel Plating and 4 more.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 2011 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.