FabDigit

2618A vs 2007 and 2 more: properties

2618A20072017A2030

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

74 GPa10.7 Msi
72 GPa10.4 Msi
72.5 GPa10.5 Msi
73 GPa10.6 Msi

Shear Modulus

27.5 GPa4 Msi
27 GPa3.9 Msi
27 GPa3.9 Msi
27 GPa3.9 Msi

Bulk Modulus

72 GPa10.4 Msi
71 GPa10.3 Msi
75 GPa10.9 Msi
71 GPa10.3 Msi

Tensile Strength (Ultimate)

440 MPa63.8 ksi
390 MPa56.6 ksi
410 MPa59.5 ksi
400 MPa58 ksi

Yield Strength (0.2% offset)

380 MPa55.1 ksi
300 MPa43.5 ksi
260 MPa37.7 ksi
285 MPa41.3 ksi

Elongation at Break

8%
10%
14%
12%

Reduction in Area

20%

Compressive Strength

385 MPa55.8 ksi
260 MPa37.7 ksi

Shear Strength

262 MPa38 ksi
235 MPa34.1 ksi
260 MPa37.7 ksi
240 MPa34.8 ksi

Fracture Toughness (K_IC)

28 MPa·√m25.5 ksi·√in
27 MPa·√m24.6 ksi·√in
30 MPa·√m27.3 ksi·√in
24 MPa·√m21.8 ksi·√in

Charpy V-Notch Impact (RT)

8 J5.9 ft·lbf

Hardness, Brinell

118 HB
115 HB
110 HB
100 HB

Hardness, Vickers

128 HV
118 HV
108 HV

Hardness, Rockwell B

65 HRB
62 HRB

Same in both: Poisson's Ratio 0.33 · Fatigue Strength (Endurance Limit) 125 MPa18.1 ksi

Physical

Density and transition temperatures.

Density

2.76 g/cm³0.1 lb/in³
2.85 g/cm³0.1 lb/in³
2.79 g/cm³0.1 lb/in³
2.82 g/cm³0.1 lb/in³

Melting Point (Solidus)

502°C936 °F
508°C946 °F
512°C954 °F
510°C950 °F

Liquidus Temperature

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

Thermal

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

Thermal Conductivity

146 W/m·K84.4 BTU/hr·ft·°F
135 W/m·K78 BTU/hr·ft·°F
134 W/m·K77.4 BTU/hr·ft·°F
134 W/m·K77.4 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

22.3 µm/m·K12.4 µin/in·°F
23 µm/m·K12.8 µin/in·°F
23 µm/m·K12.8 µin/in·°F
23 µm/m·K12.8 µin/in·°F

Max Service Temperature (continuous)

200°C392 °F
120°C248 °F
120°C248 °F
100°C212 °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

39 % IACS
30 % IACS
34 % IACS
32 % IACS

Electrical Resistivity

4.4×10⁻⁸ Ω·m1.73 µΩ·in
5.75×10⁻⁸ Ω·m2.26 µΩ·in
5.07×10⁻⁸ Ω·m2 µΩ·in
5.4×10⁻⁸ Ω·m2.13 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.72 V
-0.68 V
-0.69 V
-0.69 V

Corrosion Resistance

32 / 100
30 / 100
35 / 100
30 / 100

Manufacturability

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

Machinability

70 / 100
95 / 100
75 / 100
92 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
300%
75%
90%

Weldability

18 / 100
15 / 100
20 / 100
12 / 100

Formability (cold)

22 / 100
25 / 100
45 / 100
35 / 100

Brazeability / Solderability

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

Polishability

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

Castability

25 / 100
25 / 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
205 MJ/kg88,134 BTU/lb

Embodied Carbon (primary production)

14 kg CO₂/kg
12.5 kg CO₂/kg
12.5 kg CO₂/kg
12.5 kg CO₂/kg

Embodied Water

1,200 L/kg144 gal/lb
1,150 L/kg138 gal/lb
1,100 L/kg132 gal/lb
1,200 L/kg144 gal/lb

Typical Recycled Content

12%
30%
25%
10%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

159 kN·m/kg
137 kN·m/kg
147 kN·m/kg
142 kN·m/kg

Specific Stiffness (E / density)

26.8 MN·m/kg
25.3 MN·m/kg
26 MN·m/kg
25.9 MN·m/kg

Modulus of Resilience

976 kJ/m³
625 kJ/m³
466 kJ/m³
556 kJ/m³

Thermal Diffusivity

60.5 mm²/s
55.1 mm²/s
55 mm²/s
54.6 mm²/s

Thermal Shock Resistance Index

39
32
33
32

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 scale20072017A20302618A

Manufacturing and finishing

Capability2618A20072017A2030
CNC machiningYesYesYes
Sheet metalYesYesYes
Default condition
Relative cost$$$$ High$$$ Premium$$$ Premium$$$ Premium
Min. machined wall0.5 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 2618A and 2007 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.