C8 vs YG8
Ceramic · grade comparison
C8 and YG8 are both ceramic grades. YG8 is the stronger of the two: tensile strength 1,200 MPa (174 ksi) against 900 MPa (131 ksi) for C8, about 33% more. YG8 is the more ductile: elongation 0.1% versus 0% for C8, and C8 is harder (1,650 HV vs 1,350 HV). C8 is lighter (10.4 g/cm³ vs 14.7 g/cm³ for YG8) and YG8 is stiffer (600 GPa vs 520 GPa).
C8Choose it when weight is the constraint, or when the part sees heat.
YG8Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
C8 vs YG8: 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
Shear Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Knoop
Hardness, Mohs
Same in both: Poisson's Ratio 0.22
Physical
Density and transition temperatures.
Density
Porosity
Same in both: Melting Point (Solidus) 1,320°C2,408 °F
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)
Same in both: Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
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.
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 400 L/kg47.9 gal/lb · Typical Recycled Content 30%
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 | C8 | YG8 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
C8 vs YG8 — frequently asked
Is YG8 stronger than C8?
Yes. YG8 has a typical tensile strength of 1,200 MPa (174 ksi) against 900 MPa (131 ksi) for C8 — about 33% more.
Which is cheaper, C8 or YG8?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose C8 over YG8?
Pick C8 when weight is the constraint, or when the part sees heat. Pick YG8 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 C8 and YG8 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.