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Mycalex vs Neoceram

Glass · grade comparison

Mycalex and Neoceram are both glass grades. Neoceram is the stronger of the two: tensile strength 50 MPa (7.25 ksi) against 45 MPa (6.53 ksi) for Mycalex, about 11% more. In exchange, Mycalex is the more ductile: elongation 0.1% versus 0% for Neoceram, and Neoceram is harder (700 HV vs 250 HV). Neoceram is lighter (2.51 g/cm³ vs 3.4 g/cm³ for Mycalex) and Neoceram is stiffer (88 GPa vs 65 GPa). On the shop floor, Mycalex machines more easily (very good vs not recommended).

MycalexChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.

NeoceramChoose it when strength drives the design, or when weight is the constraint.

Mycalex vs Neoceram: properties

MycalexNeoceram

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

65 GPa9.4 Msi
88 GPa12.8 Msi

Shear Modulus

26 GPa3.8 Msi
36 GPa5.2 Msi

Bulk Modulus

43 GPa6.2 Msi
56 GPa8.1 Msi

Poisson's Ratio

0.25
0.24

Tensile Strength (Ultimate)

45 MPa6.5 ksi
50 MPa7.3 ksi

Elongation at Break

0.1%
0%

Compressive Strength

345 MPa50 ksi
1,000 MPa145 ksi

Flexural Strength

105 MPa15.2 ksi
100 MPa14.5 ksi

Shear Strength

90 MPa13.1 ksi
—

Fracture Toughness (K_IC)

1.3 MPa·√m1.2 ksi·√in
0.9 MPa·√m0.82 ksi·√in

Hardness, Vickers

250 HV
700 HV

Hardness, Knoop

240 HK
650 HK

Hardness, Mohs

5
6.5

Physical

Density and transition temperatures.

Density

3.4 g/cm³0.12 lb/in³
2.51 g/cm³0.09 lb/in³

Melting Point (Solidus)

—
1,400°C2,552 °F

Refractive Index

—
1.54

Light Transmission

—
85%

Same in both: Porosity 0%

Thermal

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

Thermal Conductivity

0.7 W/m·K0.4 BTU/hr·ft·°F
1.7 W/m·K0.95 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11 µm/m·K6.1 µin/in·°F
0.2 µm/m·K0.11 µin/in·°F

Max Service Temperature (continuous)

350°C662 °F
700°C1,292 °F

Same in both: Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹² Ω·m3.94×10¹⁹ µΩ·in
1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in

Dielectric Strength

15 kV/mm381 V/mil
20 kV/mm508 V/mil

Dielectric Constant (1 MHz)

9.2
6.5

Dissipation Factor (1 MHz)

0.002
0.003

Volume Resistivity

1×10¹⁴ Ω·cm
1×10¹³ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

78 / 100
90 / 100

Manufacturability

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

Machinability

75 / 100
8 / 100

Polishability

45 / 100
85 / 100

Sintering / Firing Temperature

700°C1,292 °F
900°C1,652 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

32 MJ/kg13,758 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

2.2 kg CO₂/kg
2.1 kg CO₂/kg

Embodied Water

40 L/kg4.8 gal/lb
20 L/kg2.4 gal/lb

Same in both: Typical Recycled Content 5%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

13 kN·m/kg
20 kN·m/kg

Specific Stiffness (E / density)

19.1 MN·m/kg
35.1 MN·m/kg

Thermal Diffusivity

0.3 mm²/s
0.8 mm²/s

Thermal Shock Resistance Index

0
5

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 scale

Manufacturing and finishing

CapabilityMycalexNeoceram
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Mycalex vs Neoceram — frequently asked

Is Neoceram stronger than Mycalex?

Yes. Neoceram has a typical tensile strength of 50 MPa (7.25 ksi) against 45 MPa (6.53 ksi) for Mycalex — about 11% more.

Which is cheaper, Mycalex or Neoceram?

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, Mycalex or Neoceram?

Mycalex. Its machinability rates very good (75/100) against not recommended (8/100) for Neoceram.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Mycalex and Neoceram 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.