FabDigit

7012 vs 7075 and 2 more: properties

7012707520072017

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

71 GPa10.3 Msi
71.7 GPa10.4 Msi
72 GPa10.4 Msi
72.4 GPa10.5 Msi

Shear Modulus

26.9 GPa3.9 Msi
26.9 GPa3.9 Msi
27 GPa3.9 Msi
27 GPa3.9 Msi

Bulk Modulus

70 GPa10.2 Msi
70 GPa10.2 Msi
71 GPa10.3 Msi
75 GPa10.9 Msi

Tensile Strength (Ultimate)

550 MPa79.8 ksi
572 MPa83 ksi
390 MPa56.6 ksi
427 MPa61.9 ksi

Yield Strength (0.2% offset)

510 MPa74 ksi
503 MPa73 ksi
300 MPa43.5 ksi
276 MPa40 ksi

Elongation at Break

9%
11%
10%
22%

Compressive Strength

520 MPa75.4 ksi
505 MPa73.2 ksi
276 MPa40 ksi

Shear Strength

325 MPa47.1 ksi
331 MPa48 ksi
235 MPa34.1 ksi
260 MPa37.7 ksi

Fatigue Strength (Endurance Limit)

155 MPa22.5 ksi
159 MPa23.1 ksi
125 MPa18.1 ksi
124 MPa18 ksi

Fracture Toughness (K_IC)

28 MPa·√m25.5 ksi·√in
27 MPa·√m24.6 ksi·√in
27 MPa·√m24.6 ksi·√in
30 MPa·√m27.3 ksi·√in

Hardness, Brinell

160 HB
150 HB
115 HB
105 HB

Hardness, Vickers

170 HV
175 HV
115 HV

Reduction in Area

25%

Charpy V-Notch Impact (RT)

8 J5.9 ft·lbf

Hardness, Rockwell B

87 HRB
65 HRB
65 HRB

Same in both: Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Density

2.81 g/cm³0.1 lb/in³
2.81 g/cm³0.1 lb/in³
2.85 g/cm³0.1 lb/in³
2.79 g/cm³0.1 lb/in³

Melting Point (Solidus)

480°C896 °F
477°C891 °F
508°C946 °F
513°C955 °F

Liquidus Temperature

635°C1,175 °F
635°C1,175 °F
640°C1,184 °F
641°C1,186 °F

Thermal

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

Thermal Conductivity

135 W/m·K78 BTU/hr·ft·°F
130 W/m·K75.1 BTU/hr·ft·°F
135 W/m·K78 BTU/hr·ft·°F
134 W/m·K77.4 BTU/hr·ft·°F

Specific Heat Capacity

865 J/kg·K0.21 BTU/lb·°F
960 J/kg·K0.23 BTU/lb·°F
860 J/kg·K0.21 BTU/lb·°F
873 J/kg·K0.21 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

23.4 µm/m·K13 µin/in·°F
23.6 µm/m·K13.1 µin/in·°F
23 µm/m·K12.8 µin/in·°F
23.6 µm/m·K13.1 µin/in·°F

Latent Heat of Fusion

385 J/g166 BTU/lb
395 J/g170 BTU/lb
390 J/g168 BTU/lb
390 J/g168 BTU/lb

Same in both: Max Service Temperature (continuous) 120°C248 °F · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

32 % IACS
33 % IACS
30 % IACS
34 % IACS

Electrical Resistivity

5.4×10⁻⁸ Ω·m2.13 µΩ·in
5.15×10⁻⁸ Ω·m2.03 µΩ·in
5.75×10⁻⁸ Ω·m2.26 µΩ·in
5.07×10⁻⁸ Ω·m2 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.84 V
-0.83 V
-0.68 V
-0.69 V

Corrosion Resistance

35 / 100
35 / 100
30 / 100
33 / 100

Manufacturability

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

Machinability

72 / 100
78 / 100
95 / 100
78 / 100

Machinability Rating (AISI 1212 = 100 %)

90%
160%
300%
70%

Weldability

22 / 100
18 / 100
15 / 100
20 / 100

Formability (cold)

22 / 100
25 / 100
25 / 100
45 / 100

Brazeability / Solderability

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

Polishability

60 / 100
60 / 100
45 / 100
55 / 100

Castability

25 / 100
25 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

205 MJ/kg88,134 BTU/lb
205 MJ/kg88,134 BTU/lb
200 MJ/kg85,985 BTU/lb
200 MJ/kg85,985 BTU/lb

Embodied Carbon (primary production)

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

Embodied Water

1,150 L/kg138 gal/lb
1,200 L/kg144 gal/lb
1,150 L/kg138 gal/lb
1,200 L/kg144 gal/lb

Typical Recycled Content

20%
15%
30%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

196 kN·m/kg
204 kN·m/kg
137 kN·m/kg
153 kN·m/kg

Specific Stiffness (E / density)

25.3 MN·m/kg
25.5 MN·m/kg
25.3 MN·m/kg
25.9 MN·m/kg

Modulus of Resilience

1,832 kJ/m³
1,764 kJ/m³
625 kJ/m³
526 kJ/m³

Thermal Diffusivity

55.5 mm²/s
48.2 mm²/s
55.1 mm²/s
55 mm²/s

Thermal Shock Resistance Index

45
44
32
33

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 scale2007201770127075

Manufacturing and finishing

Capability7012707520072017
Default conditionT6
Relative cost$$$ Premium$$$ Premium$$$ Premium$$$ Premium
Min. machined wall0.5 mm0.8 mm0.5 mm0.8 mm
Best machined surfaceRa 0.8 µmRa 0.8 µmRa 0.8 µmRa 0.8 µm

Both are offered for CNC machining and Sheet metal. 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 7012 and 7075 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.