Glassy Carbon GC-1000 vs Glassy Carbon GC-2300
Ceramic · Glassy Carbon temper comparison
Glassy Carbon GC-1000 and Glassy Carbon GC-2300 are two conditions of the same ceramic grade, Glassy Carbon: GC-1000 (low heat-treatment temperature glassy carbon) versus GC-2300 (high heat-treatment temperature glassy carbon). The chemistry is identical, so every difference below comes from the condition. Glassy Carbon GC-2300 is the stronger of the two: tensile strength 130 MPa (18.9 ksi) against 110 MPa (16 ksi) for Glassy Carbon GC-1000, about 18% more. Glassy Carbon GC-2300 is harder — 340 HV against 230 HV for Glassy Carbon GC-1000 — which matters for wear surfaces and threads. Glassy Carbon GC-2300 is lighter (1.42 g/cm³ vs 1.54 g/cm³ for Glassy Carbon GC-1000) and Glassy Carbon GC-2300 runs hotter in service (600°C vs 500°C continuous).
Glassy Carbon GC-2300Choose it when strength drives the design, or when surface hardness matters.
Glassy Carbon GC-1000 vs Glassy Carbon GC-2300: 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.
Glassy Carbon GC-1000Glassy Carbon GC-2300
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Compressive Strength
Flexural Strength
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 35 GPa5.1 Msi · Shear Modulus 14.5 GPa2.1 Msi · Bulk Modulus 19 GPa2.8 Msi · Poisson's Ratio 0.2 · Elongation at Break 0.4% · Shear Strength 60 MPa8.7 ksi · Fracture Toughness (K_IC) 0.8 MPa·√m0.73 ksi·√in · Hardness, Knoop 320 HK · Hardness, Mohs 6.5
Physical
Density and transition temperatures.
Density
Same in both: Porosity 0%
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 710 J/kg·K0.17 BTU/lb·°F · Min Service Temperature -269°C-452 °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.
Machinability
Sintering / Firing Temperature
Same in both: Polishability 95 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 300 MJ/kg128,977 BTU/lb · Embodied Carbon (primary production) 22 kg CO₂/kg · Embodied Water 150 L/kg18 gal/lb · Typical Recycled Content 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.
Glassy Carbon GC-1000 vs Glassy Carbon GC-2300 — frequently asked
Is Glassy Carbon GC-2300 stronger than Glassy Carbon GC-1000?
Yes. Glassy Carbon GC-2300 has a typical tensile strength of 130 MPa (18.9 ksi) against 110 MPa (16 ksi) for Glassy Carbon GC-1000 — about 18% more.
Which condition does FabDigit quote by default, GC-1000 or GC-2300?
GC-2300 is the default Glassy Carbon 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 Glassy Carbon GC-1000 over Glassy Carbon GC-2300?
Pick Glassy Carbon GC-2300 when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Glassy Carbon GC-1000 and Glassy Carbon GC-2300 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.