BeO Ceramic vs C-820 Porous Magnesia
Ceramic · grade comparison
BeO Ceramic and C-820 Porous Magnesia are both ceramic grades. BeO Ceramic is the stronger of the two: tensile strength 140 MPa (20.3 ksi) against 22 MPa (3.19 ksi) for C-820 Porous Magnesia, about 6.4 times as much. BeO Ceramic is harder — 1,200 HV against 350 HV for C-820 Porous Magnesia — which matters for wear surfaces and threads. C-820 Porous Magnesia is lighter (2.6 g/cm³ vs 2.87 g/cm³ for BeO Ceramic) and BeO Ceramic is stiffer (345 GPa vs 130 GPa). On the shop floor, C-820 Porous Magnesia machines more easily (fair vs not recommended).
BeO CeramicChoose it when strength drives the design, or when surface hardness matters.
C-820 Porous MagnesiaChoose it when weight is the constraint, or when the part is machined in volume.
BeO Ceramic vs C-820 Porous Magnesia: 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.
BeO CeramicC-820 Porous Magnesia
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Compressive Strength
Flexural Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Knoop
Hardness, Mohs
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Refractive Index
Porosity
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Volume Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
Sintering / Firing Temperature
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 5%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Thermal Shock Resistance Index
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 | BeO Ceramic | C-820 Porous Magnesia |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
BeO Ceramic vs C-820 Porous Magnesia — frequently asked
Is BeO Ceramic stronger than C-820 Porous Magnesia?
Yes. BeO Ceramic has a typical tensile strength of 140 MPa (20.3 ksi) against 22 MPa (3.19 ksi) for C-820 Porous Magnesia — about 6.4 times as much.
Which is cheaper, BeO Ceramic or C-820 Porous Magnesia?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, BeO Ceramic or C-820 Porous Magnesia?
C-820 Porous Magnesia. Its machinability rates fair (45/100) against not recommended (5/100) for BeO Ceramic.
Ready to make it?
Upload a CAD file and FabDigit prices the part in BeO Ceramic and C-820 Porous Magnesia 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.