N-SF11 vs SF11
Glass · grade comparison
N-SF11 and SF11 are both glass grades. N-SF11 is the stronger of the two: tensile strength 45 MPa (6.53 ksi) against 40 MPa (5.8 ksi) for SF11, about 13% more. N-SF11 is lighter (3.2 g/cm³ vs 4.74 g/cm³ for SF11) and N-SF11 is stiffer (92 GPa vs 66 GPa). On the shop floor, SF11 machines more easily (25 vs 15 out of 100).
N-SF11Choose it when strength drives the design, or when weight is the constraint.
SF11Choose it when the part is machined in volume.
N-SF11 vs SF11: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all glass 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 glass 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
Tensile Strength (Ultimate)
Compressive Strength
Flexural Strength
Shear Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Mohs
Same in both: Elongation at Break 0% · Hardness, Knoop 450 HK
Physical
Density and transition temperatures.
Density
Light Transmission
Same in both: Refractive Index 1.785 · Porosity 0%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Same in both: Electrical Resistivity 1×10¹² Ω·m3.94×10¹⁹ µΩ·in · Volume Resistivity 1×10¹⁴ Ω·cm
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
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Same in both: Thermal Diffusivity 0.4 mm²/s · Thermal Shock Resistance Index 0
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.
Manufacturing and finishing
| Capability | N-SF11 | SF11 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
N-SF11 vs SF11 — frequently asked
Is N-SF11 stronger than SF11?
Yes. N-SF11 has a typical tensile strength of 45 MPa (6.53 ksi) against 40 MPa (5.8 ksi) for SF11 — about 13% more.
Which is cheaper, N-SF11 or SF11?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, N-SF11 or SF11?
SF11, by a small margin. Both rate poor for machinability — 25/100 against 15/100 for N-SF11.
Ready to make it?
Upload a CAD file and FabDigit prices the part in N-SF11 and SF11 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.