8Y-FSZ vs Mg-PSZ
Ceramic · grade comparison
8Y-FSZ and Mg-PSZ are both ceramic grades. Mg-PSZ is the stronger of the two: tensile strength 350 MPa (50.8 ksi) against 150 MPa (21.8 ksi) for 8Y-FSZ, about 133% more. 8Y-FSZ is harder — 1,300 HV against 1,120 HV for Mg-PSZ — which matters for wear surfaces and threads. Mg-PSZ is lighter (5.75 g/cm³ vs 5.95 g/cm³ for 8Y-FSZ) and 8Y-FSZ runs hotter in service (1,500°C vs 1,000°C continuous).
8Y-FSZChoose it when surface hardness matters, or when the part sees heat.
Mg-PSZChoose it when strength drives the design, or when weight is the constraint.
8Y-FSZ vs Mg-PSZ: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all ceramic 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 ceramic 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Flexural Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Knoop
Hardness, Mohs
Shear Strength
Same in both: Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Density
Refractive Index
Porosity
Light Transmission
Same in both: Melting Point (Solidus) 2,700°C4,892 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 450 J/kg·K0.11 BTU/lb·°F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Constant (1 MHz)
Volume Resistivity
Dielectric Strength
Dissipation Factor (1 MHz)
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 92 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Polishability
Sintering / Firing Temperature
Same in both: Machinability 5 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 220 L/kg26.4 gal/lb · Typical Recycled Content 0%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 0
Strength versus weight
Yield strength against density for every ceramic grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | 8Y-FSZ | Mg-PSZ |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
8Y-FSZ vs Mg-PSZ — frequently asked
Is Mg-PSZ stronger than 8Y-FSZ?
Yes. Mg-PSZ has a typical tensile strength of 350 MPa (50.8 ksi) against 150 MPa (21.8 ksi) for 8Y-FSZ — about 133% more.
Which is cheaper, 8Y-FSZ or Mg-PSZ?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose 8Y-FSZ over Mg-PSZ?
Pick 8Y-FSZ when surface hardness matters, or when the part sees heat. Pick Mg-PSZ when strength drives the design, or when weight is the constraint.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 8Y-FSZ and Mg-PSZ 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.