Magnesium Alloy ZM6-T6 vs ZM6 T6-PM
Magnesium Alloy · ZM6 temper comparison
ZM6-T6 and ZM6 T6-PM are two conditions of the same magnesium alloy grade, ZM6: T6 (solution heat treated and artificially aged) versus T6-PM (T6). The chemistry is identical, so every difference below comes from the condition. ZM6 T6-PM is the stronger of the two: tensile strength 265 MPa (38.4 ksi) against 250 MPa (36.3 ksi) for ZM6-T6, about 6% more. ZM6 T6-PM is the more ductile: elongation 5.5% versus 4.5% for ZM6-T6, and ZM6 T6-PM is harder (77 HV vs 73 HV).
ZM6 T6-PMChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
ZM6-T6 vs ZM6 T6-PM: 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
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 44 GPa6.4 Msi · Shear Modulus 16.5 GPa2.4 Msi · Bulk Modulus 43 GPa6.2 Msi · Poisson's Ratio 0.33 · Charpy V-Notch Impact (RT) 3 J2.2 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 1.8 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.
Thermal Conductivity
Same in both: Specific Heat Capacity 1,000 J/kg·K0.24 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 26.5 µm/m·K14.7 µin/in·°F · Latent Heat of Fusion 360 J/g155 BTU/lb · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -1.55 V · Corrosion Resistance 25 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 92 / 100 · Machinability Rating (AISI 1212 = 100 %) 480% · Weldability 65 / 100 · Castability 85 / 100 · Brazeability / Solderability 15 / 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) 30 kg CO₂/kg · Embodied Water 500 L/kg59.9 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.
ZM6-T6 vs ZM6 T6-PM — frequently asked
Is ZM6 T6-PM stronger than ZM6-T6?
Yes. ZM6 T6-PM has a typical tensile strength of 265 MPa (38.4 ksi) against 250 MPa (36.3 ksi) for ZM6-T6 — about 6% more.
Which condition does FabDigit quote by default, T6 or T6-PM?
T6 is the default ZM6 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 ZM6-T6 over ZM6 T6-PM?
Pick ZM6 T6-PM 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 ZM6-T6 and ZM6 T6-PM 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.