Magnesium Alloy WE43 As Cast vs WE43 Stress Relieved
Magnesium Alloy · WE43 temper comparison
WE43 As Cast and WE43 Stress Relieved are two conditions of the same magnesium alloy grade, WE43: As Cast versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. WE43 Stress Relieved is the stronger of the two: yield strength 200 MPa (29 ksi) against 110 MPa (16 ksi) for WE43 As Cast, about 82% more; tensile strength follows at 280 MPa (40.6 ksi) vs 180 MPa (26.1 ksi). WE43 Stress Relieved is the more ductile: elongation 12% versus 4% for WE43 As Cast, and WE43 Stress Relieved is harder (72 HB vs 55 HB). WE43 Stress Relieved runs hotter in service (250°C vs 200°C continuous).
WE43 Stress RelievedChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
WE43 As Cast vs WE43 Stress Relieved: 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.
WE43 As CastWE43 Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
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, Vickers
Same in both: Shear Modulus 16.5 GPa2.4 Msi · Bulk Modulus 33 GPa4.7 Msi · Poisson's Ratio 0.27
Physical
Density and transition temperatures.
Same in both: Density 1.84 g/cm³0.07 lb/in³ · Melting Point (Solidus) 540°C1,004 °F · Liquidus Temperature 640°C1,184 °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 960 J/kg·K0.23 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.
Electrical Conductivity
Electrical Resistivity
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.
Weldability
Formability (cold)
Same in both: Machinability 88 / 100 · Machinability Rating (AISI 1212 = 100 %) 300% · Castability 70 / 100 · Brazeability / Solderability 18 / 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) 38 kg CO₂/kg · Embodied Water 550 L/kg65.9 gal/lb · Typical Recycled Content 10%
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.
WE43 As Cast vs WE43 Stress Relieved — frequently asked
Is WE43 Stress Relieved stronger than WE43 As Cast?
Yes. WE43 Stress Relieved has a typical yield strength of 200 MPa (29 ksi) against 110 MPa (16 ksi) for WE43 As Cast — about 82% more. Tensile strength is 280 MPa (40.6 ksi) vs 180 MPa (26.1 ksi).
Which condition does FabDigit quote by default, As Cast or Stress Relieved?
F is the default WE43 condition in the FabDigit quote flow (neither As Cast nor Stress Relieved). 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 WE43 As Cast over WE43 Stress Relieved?
Pick WE43 Stress Relieved 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 WE43 As Cast and WE43 Stress Relieved 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.