Magnesium Alloy EV31A As Cast vs EV31A-T6
Magnesium Alloy · EV31A temper comparison
EV31A As Cast and EV31A-T6 are two conditions of the same magnesium alloy grade, EV31A: As Cast versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. EV31A-T6 is the stronger of the two: yield strength 172 MPa (24.9 ksi) against 110 MPa (16 ksi) for EV31A As Cast, about 56% more; tensile strength follows at 280 MPa (40.6 ksi) vs 195 MPa (28.3 ksi). EV31A-T6 is the more ductile: elongation 5% versus 4% for EV31A As Cast, and EV31A-T6 is harder (70 HB vs 55 HB). EV31A-T6 runs hotter in service (200°C vs 150°C continuous).
EV31A-T6Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
EV31A As Cast vs EV31A-T6: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all magnesium alloy 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 magnesium alloy 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)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 44 GPa6.4 Msi · Shear Modulus 17 GPa2.5 Msi · Bulk Modulus 38 GPa5.5 Msi · Poisson's Ratio 0.28 · Fracture Toughness (K_IC) 14 MPa·√m12.7 ksi·√in · Charpy V-Notch Impact (RT) 3 J2.2 ft·lbf · Hardness, Vickers 58 HV
Physical
Density and transition temperatures.
Same in both: Density 1.82 g/cm³0.07 lb/in³ · Melting Point (Solidus) 545°C1,013 °F · Liquidus Temperature 640°C1,184 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 100 W/m·K57.8 BTU/hr·ft·°F · Specific Heat Capacity 1,000 J/kg·K0.24 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 26.7 µm/m·K14.8 µin/in·°F · Latent Heat of Fusion 370 J/g159 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 9.5 % IACS · Electrical Resistivity 1.8×10⁻⁷ Ω·m7.09 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -1.55 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 300% · Weldability 72 / 100 · Formability (cold) 10 / 100 · Castability 85 / 100 · Brazeability / Solderability 20 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 400 MJ/kg171,969 BTU/lb · Embodied Carbon (primary production) 42 kg CO₂/kg · Embodied Water 600 L/kg71.9 gal/lb · Typical Recycled Content 15%
Strength versus weight
Yield strength against density for every magnesium alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
EV31A As Cast vs EV31A-T6 — frequently asked
Is EV31A-T6 stronger than EV31A As Cast?
Yes. EV31A-T6 has a typical yield strength of 172 MPa (24.9 ksi) against 110 MPa (16 ksi) for EV31A As Cast — about 56% more. Tensile strength is 280 MPa (40.6 ksi) vs 195 MPa (28.3 ksi).
Which condition does FabDigit quote by default, As Cast or T6?
As Cast is the default EV31A 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.
When should I choose EV31A As Cast over EV31A-T6?
Pick EV31A-T6 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 EV31A As Cast and EV31A-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.