Aluminum EN AC-42200-T6 vs EN AC-42200-T61
Aluminum · EN AC-42200 temper comparison
EN AC-42200-T6 and EN AC-42200-T61 are two conditions of the same aluminum grade, EN AC-42200: T6 (solution heat treated and artificially aged) versus T61 (T6 variant, underaged). The chemistry is identical, so every difference below comes from the condition. EN AC-42200-T61 is the stronger of the two: yield strength 285 MPa (41.3 ksi) against 250 MPa (36.3 ksi) for EN AC-42200-T6, about 14% more; tensile strength follows at 345 MPa (50 ksi) vs 320 MPa (46.4 ksi). EN AC-42200-T61 is the more ductile: elongation 5% versus 4% for EN AC-42200-T6. On the shop floor, EN AC-42200-T61 machines more easily (very good vs good).
EN AC-42200-T61Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
EN AC-42200-T6 vs EN AC-42200-T61: 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
Fatigue Strength (Endurance Limit)
Same in both: Elastic (Young's) Modulus 72 GPa10.4 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Compressive Strength 255 MPa37 ksi · Shear Strength 210 MPa30.5 ksi · Fracture Toughness (K_IC) 25 MPa·√m22.8 ksi·√in · Charpy V-Notch Impact (RT) 6 J4.4 ft·lbf · Hardness, Brinell 105 HB · Hardness, Vickers 110 HV
Physical
Density and transition temperatures.
Same in both: Density 2.67 g/cm³0.1 lb/in³ · Melting Point (Solidus) 557°C1,035 °F · Liquidus Temperature 613°C1,135 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 963 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.5 µm/m·K11.9 µin/in·°F · Latent Heat of Fusion 425 J/g183 BTU/lb · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 39 % IACS · Electrical Resistivity 4.4×10⁻⁸ Ω·m1.73 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 60% · Weldability 70 / 100 · Formability (cold) 15 / 100 · Castability 90 / 100 · Brazeability / Solderability 30 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 155 MJ/kg66,638 BTU/lb · Embodied Carbon (primary production) 9.5 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 35%
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.
EN AC-42200-T6 vs EN AC-42200-T61 — frequently asked
Is EN AC-42200-T61 stronger than EN AC-42200-T6?
Yes. EN AC-42200-T61 has a typical yield strength of 285 MPa (41.3 ksi) against 250 MPa (36.3 ksi) for EN AC-42200-T6 — about 14% more. Tensile strength is 345 MPa (50 ksi) vs 320 MPa (46.4 ksi).
Which condition does FabDigit quote by default, T6 or T61?
T6 is the default EN AC-42200 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, EN AC-42200-T6 or EN AC-42200-T61?
EN AC-42200-T61. Its machinability rates very good (70/100) against good (55/100) for EN AC-42200-T6.
Ready to make it?
Upload a CAD file and FabDigit prices the part in EN AC-42200-T6 and EN AC-42200-T61 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.