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C-Glass vs Gorilla Glass

Glass · grade comparison

C-Glass and Gorilla Glass are both glass grades. C-Glass is the stronger of the two: tensile strength 3,300 MPa (479 ksi) against 350 MPa (50.8 ksi) for Gorilla Glass, about 9.4 times as much. C-Glass is the more ductile: elongation 4.8% versus 0% for Gorilla Glass, and Gorilla Glass is harder (620 HV vs 540 HV). Gorilla Glass is lighter (2.42 g/cm³ vs 2.52 g/cm³ for C-Glass) and C-Glass runs hotter in service (480°C vs 200°C continuous).

C-GlassChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

Gorilla GlassChoose it when weight is the constraint.

C-Glass vs Gorilla Glass: properties

C-GlassGorilla Glass

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

69 GPa10 Msi
72 GPa10.4 Msi

Shear Modulus

28 GPa4.1 Msi
29.5 GPa4.3 Msi

Bulk Modulus

43 GPa6.2 Msi
42 GPa6.1 Msi

Poisson's Ratio

0.23
0.21

Tensile Strength (Ultimate)

3,300 MPa479 ksi
350 MPa50.8 ksi

Elongation at Break

4.8%
0%

Flexural Strength

90 MPa13.1 ksi
800 MPa116 ksi

Fracture Toughness (K_IC)

0.7 MPa·√m0.64 ksi·√in
0.75 MPa·√m0.68 ksi·√in

Hardness, Vickers

540 HV
620 HV

Hardness, Knoop

490 HK
590 HK

Hardness, Mohs

5.8
6.5

Same in both: Compressive Strength 1,000 MPa145 ksi

Physical

Density and transition temperatures.

Density

2.52 g/cm³0.09 lb/in³
2.42 g/cm³0.09 lb/in³

Melting Point (Solidus)

1,000°C1,832 °F
—

Refractive Index

1.541
1.5

Light Transmission

—
92%

Same in both: Porosity 0%

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

1.1 W/m·K0.61 BTU/hr·ft·°F
1 W/m·K0.58 BTU/hr·ft·°F

Specific Heat Capacity

800 J/kg·K0.19 BTU/lb·°F
820 J/kg·K0.2 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

6.3 µm/m·K3.5 µin/in·°F
7.9 µm/m·K4.4 µin/in·°F

Max Service Temperature (continuous)

480°C896 °F
200°C392 °F

Min Service Temperature

-200°C-328 °F
-100°C-148 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in
1×10¹² Ω·m3.94×10¹⁹ µΩ·in

Dielectric Strength

12 kV/mm305 V/mil
15 kV/mm381 V/mil

Dielectric Constant (1 MHz)

6.9
7.2

Dissipation Factor (1 MHz)

0.006
0.011

Volume Resistivity

1×10¹² Ω·cm
1×10¹⁴ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

85 / 100
90 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

12 / 100
5 / 100

Polishability

—
95 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

45 MJ/kg19,347 BTU/lb
35 MJ/kg15,047 BTU/lb

Embodied Carbon (primary production)

2.4 kg CO₂/kg
2.6 kg CO₂/kg

Embodied Water

110 L/kg13.2 gal/lb
25 L/kg3 gal/lb

Typical Recycled Content

5%
3%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

1,310 kN·m/kg
145 kN·m/kg

Specific Stiffness (E / density)

27.4 MN·m/kg
29.8 MN·m/kg

Thermal Shock Resistance Index

8
1

Same in both: Thermal Diffusivity 0.5 mm²/s

Strength versus weight

Yield strength against density for every glass grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

501002005002.533.5Density (g/cm³)Yield strength (MPa) — log scaleGorilla Glass

Manufacturing and finishing

CapabilityC-GlassGorilla Glass
Default condition—Chem Strengthened
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

C-Glass vs Gorilla Glass — frequently asked

Is C-Glass stronger than Gorilla Glass?

Yes. C-Glass has a typical tensile strength of 3,300 MPa (479 ksi) against 350 MPa (50.8 ksi) for Gorilla Glass — about 9.4 times as much.

Which is cheaper, C-Glass or Gorilla Glass?

Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, C-Glass or Gorilla Glass?

C-Glass, by a small margin. Both rate not recommended for machinability — 12/100 against 5/100 for Gorilla Glass.

Ready to make it?

Upload a CAD file and FabDigit prices the part in C-Glass and Gorilla Glass 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.