Magnesium Alloy MgMn2-F vs MgMn2-O
Magnesium Alloy · MgMn2 temper comparison
MgMn2-F and MgMn2-O are two conditions of the same magnesium alloy grade, MgMn2: F (as fabricated) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. MgMn2-F is the stronger of the two: yield strength 180 MPa (26.1 ksi) against 105 MPa (15.2 ksi) for MgMn2-O, about 71% more; tensile strength follows at 255 MPa (37 ksi) vs 220 MPa (31.9 ksi). In exchange, MgMn2-O is the more ductile: elongation 15% versus 12% for MgMn2-F, and MgMn2-F is harder (44 HB vs 40 HB).
MgMn2-FChoose it when strength drives the design.
MgMn2-OChoose it when the part is bent, formed or impact-loaded.
MgMn2-F vs MgMn2-O: 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)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 45 GPa6.5 Msi · Shear Modulus 17 GPa2.5 Msi · Bulk Modulus 45 GPa6.5 Msi · Poisson's Ratio 0.35
Physical
Density and transition temperatures.
Same in both: Density 1.76 g/cm³0.06 lb/in³ · Melting Point (Solidus) 648°C1,198 °F · Liquidus Temperature 651°C1,204 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 138 W/m·K79.7 BTU/hr·ft·°F · Specific Heat Capacity 1,030 J/kg·K0.25 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 26 µm/m·K14.4 µin/in·°F · Latent Heat of Fusion 370 J/g159 BTU/lb · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -100°C-148 °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) -1.58 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 400% · Brazeability / Solderability 20 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 340 MJ/kg146,174 BTU/lb · Embodied Carbon (primary production) 27 kg CO₂/kg · Embodied Water 500 L/kg59.9 gal/lb · Typical Recycled Content 20%
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.
MgMn2-F vs MgMn2-O — frequently asked
Is MgMn2-F stronger than MgMn2-O?
Yes. MgMn2-F has a typical yield strength of 180 MPa (26.1 ksi) against 105 MPa (15.2 ksi) for MgMn2-O — about 71% more. Tensile strength is 255 MPa (37 ksi) vs 220 MPa (31.9 ksi).
Which condition does FabDigit quote by default, F or O?
F is the default MgMn2 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 MgMn2-F over MgMn2-O?
Pick MgMn2-F when strength drives the design. Pick MgMn2-O when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in MgMn2-F and MgMn2-O 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.