Aluminum 201.0-F vs 201.0-T4
Aluminum · 201.0 temper comparison
201.0-F and 201.0-T4 are two conditions of the same aluminum grade, 201.0: F (as fabricated) versus T4 (solution heat treated and naturally aged). The chemistry is identical, so every difference below comes from the condition. 201.0-T4 is the stronger of the two: yield strength 220 MPa (31.9 ksi) against 110 MPa (16 ksi) for 201.0-F, about 100% more; tensile strength follows at 380 MPa (55.1 ksi) vs 190 MPa (27.6 ksi). 201.0-T4 is the more ductile: elongation 18% versus 4% for 201.0-F, and 201.0-T4 is harder (95 HB vs 65 HB). 201.0-F runs hotter in service (120°C vs 100°C continuous) and 201.0-F conducts heat better (135 W/m·K vs 110 W/m·K).
201.0-FChoose it when the part sees heat.
201.0-T4Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
201.0-F vs 201.0-T4: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.8 g/cm³0.1 lb/in³ · Melting Point (Solidus) 571°C1,060 °F · Liquidus Temperature 650°C1,202 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 920 J/kg·K0.22 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 19.3 µm/m·K10.7 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
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
Machinability Rating (AISI 1212 = 100 %)
Same in both: Weldability 25 / 100 · Formability (cold) 10 / 100 · Castability 35 / 100 · Brazeability / Solderability 20 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 10%
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.
201.0-F vs 201.0-T4 — frequently asked
Is 201.0-T4 stronger than 201.0-F?
Yes. 201.0-T4 has a typical yield strength of 220 MPa (31.9 ksi) against 110 MPa (16 ksi) for 201.0-F — about 100% more. Tensile strength is 380 MPa (55.1 ksi) vs 190 MPa (27.6 ksi).
Which condition does FabDigit quote by default, F or T4?
T7 is the default 201.0 condition in the FabDigit quote flow (neither F nor T4). 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.
When should I choose 201.0-F over 201.0-T4?
Pick 201.0-F when the part sees heat. Pick 201.0-T4 when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 201.0-F and 201.0-T4 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.