C4 vs YG8
Ceramic · grade comparison
C4 and YG8 are both ceramic grades. YG8 is the more ductile: elongation 0.1% versus 0% for C4, and C4 is harder (1,850 HV vs 1,350 HV). YG8 is lighter (14.7 g/cm³ vs 15.2 g/cm³ for C4) and C4 is stiffer (665 GPa vs 600 GPa).
YG8Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
C4 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
Poisson's Ratio
Elongation at Break
Compressive Strength
Flexural Strength
Shear Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Knoop
Same in both: Tensile Strength (Ultimate) 1,200 MPa174 ksi · Hardness, Mohs 9
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 1,320°C2,408 °F · Porosity 0.02%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Min Service Temperature
Same in both: Max Service Temperature (continuous) 600°C1,112 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Volume Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 45 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
Same in both: Sintering / Firing Temperature 1,420°C2,588 °F
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: 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 | C4 | YG8 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
C4 vs YG8 — frequently asked
What is the difference between C4 and YG8?
C4 and YG8 are both ceramic grades. YG8 is the more ductile: elongation 0.1% versus 0% for C4, and C4 is harder (1,850 HV vs 1,350 HV). YG8 is lighter (14.7 g/cm³ vs 15.2 g/cm³ for C4) and C4 is stiffer (665 GPa vs 600 GPa).
Which is cheaper, C4 or YG8?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose C4 over YG8?
Pick YG8 when the part is bent, formed or impact-loaded, or when weight is the constraint.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C4 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.