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Aluminum Al2O3f/AC8A-F vs Al2O3f/AC8A-T6

Aluminum · Al2O3f/AC8A temper comparison

Al2O3f/AC8A-F and Al2O3f/AC8A-T6 are two conditions of the same aluminum grade, Al2O3f/AC8A: F (as fabricated) versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. Al2O3f/AC8A-T6 is the stronger of the two: yield strength 230 MPa (33.4 ksi) against 150 MPa (21.8 ksi) for Al2O3f/AC8A-F, about 53% more; tensile strength follows at 260 MPa (37.7 ksi) vs 195 MPa (28.3 ksi). In exchange, Al2O3f/AC8A-F is the more ductile: elongation 0.9% versus 0.6% for Al2O3f/AC8A-T6, and Al2O3f/AC8A-T6 is harder (125 HB vs 95 HB). Al2O3f/AC8A-T6 runs hotter in service (350°C vs 250°C continuous) and Al2O3f/AC8A-F conducts heat better (112 W/m·K vs 100 W/m·K).

Al2O3f/AC8A-FChoose it when the part is bent, formed or impact-loaded.

Al2O3f/AC8A-T6Choose it when strength drives the design, or when the part sees heat.

Al2O3f/AC8A-F vs Al2O3f/AC8A-T6: properties

Al2O3f/AC8A-FAl2O3f/AC8A-T6

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

93 GPa13.5 Msi
95 GPa13.8 Msi

Tensile Strength (Ultimate)

195 MPa28.3 ksi
260 MPa37.7 ksi

Yield Strength (0.2% offset)

150 MPa21.8 ksi
230 MPa33.4 ksi

Elongation at Break

0.9%
0.6%

Reduction in Area

1%
0.8%

Compressive Strength

340 MPa49.3 ksi
480 MPa69.6 ksi

Shear Strength

140 MPa20.3 ksi
190 MPa27.6 ksi

Fatigue Strength (Endurance Limit)

70 MPa10.2 ksi
95 MPa13.8 ksi

Fracture Toughness (K_IC)

14 MPa·√m12.7 ksi·√in
12 MPa·√m10.9 ksi·√in

Charpy V-Notch Impact (RT)

3 J1.8 ft·lbf
2 J1.1 ft·lbf

Hardness, Brinell

95 HB
125 HB

Hardness, Rockwell B

56 HRB
70 HRB

Hardness, Vickers

100 HV
135 HV

Same in both: Shear Modulus 37 GPa5.4 Msi · Bulk Modulus 78 GPa11.3 Msi · Poisson's Ratio 0.3

Physical

Density and transition temperatures.

Same in both: Density 2.79 g/cm³0.1 lb/in³ · Melting Point (Solidus) 520°C968 °F · Liquidus Temperature 575°C1,067 °F

Thermal

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

Thermal Conductivity

112 W/m·K64.7 BTU/hr·ft·°F
100 W/m·K57.8 BTU/hr·ft·°F

Max Service Temperature (continuous)

250°C482 °F
350°C662 °F

Same in both: Specific Heat Capacity 880 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.5 µm/m·K9.7 µin/in·°F · Latent Heat of Fusion 440 J/g189 BTU/lb · Min Service Temperature -50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

27 % IACS
24 % IACS

Electrical Resistivity

6.4×10⁻⁸ Ω·m2.52 µΩ·in
7.2×10⁻⁸ Ω·m2.83 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

44 / 100
42 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.8 V

Manufacturability

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

Machinability

25 / 100
20 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
25%

Weldability

12 / 100
10 / 100

Same in both: Formability (cold) 5 / 100 · Castability 55 / 100 · Brazeability / Solderability 15 / 100 · Polishability 40 / 100

Sustainability

Primary-production footprint per kilogram.

Same in both: Embodied Energy (primary production) 120 MJ/kg51,591 BTU/lb · Embodied Carbon (primary production) 9 kg CO₂/kg · Embodied Water 1,000 L/kg120 gal/lb · Typical Recycled Content 25%

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 scaleAl2O3f/AC8A

Al2O3f/AC8A-F vs Al2O3f/AC8A-T6 — frequently asked

Is Al2O3f/AC8A-T6 stronger than Al2O3f/AC8A-F?

Yes. Al2O3f/AC8A-T6 has a typical yield strength of 230 MPa (33.4 ksi) against 150 MPa (21.8 ksi) for Al2O3f/AC8A-F — about 53% more. Tensile strength is 260 MPa (37.7 ksi) vs 195 MPa (28.3 ksi).

Which condition does FabDigit quote by default, F or T6?

T6 is the default Al2O3f/AC8A condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.

Which is easier to machine, Al2O3f/AC8A-F or Al2O3f/AC8A-T6?

Al2O3f/AC8A-F, by a small margin. Both rate poor for machinability — 25/100 against 20/100 for Al2O3f/AC8A-T6.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Al2O3f/AC8A-F and Al2O3f/AC8A-T6 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.