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N-LASFN9 vs N-SF11

Glass · grade comparison

N-LASFN9 and N-SF11 are both glass grades. N-LASFN9 is harder — 620 HV against 470 HV for N-SF11 — which matters for wear surfaces and threads. N-SF11 is lighter (3.2 g/cm³ vs 4.44 g/cm³ for N-LASFN9) and N-LASFN9 is stiffer (115 GPa vs 92 GPa). On the shop floor, N-LASFN9 machines more easily (30 vs 15 out of 100).

N-LASFN9Choose it when surface hardness matters, or when the part is machined in volume.

N-SF11Choose it when weight is the constraint.

N-LASFN9 vs N-SF11: properties

N-LASFN9N-SF11

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

115 GPa16.7 Msi
92 GPa13.3 Msi

Shear Modulus

44.7 GPa6.5 Msi
36.6 GPa5.3 Msi

Bulk Modulus

89 GPa12.9 Msi
63 GPa9.1 Msi

Poisson's Ratio

0.29
0.26

Compressive Strength

1,000 MPa145 ksi
900 MPa131 ksi

Fracture Toughness (K_IC)

0.85 MPa·√m0.77 ksi·√in
0.7 MPa·√m0.64 ksi·√in

Hardness, Vickers

620 HV
470 HV

Hardness, Knoop

640 HK
450 HK

Hardness, Mohs

6
5.5

Tensile Strength (Ultimate)

—
45 MPa6.5 ksi

Elongation at Break

—
0%

Shear Strength

—
35 MPa5.1 ksi

Same in both: Flexural Strength 60 MPa8.7 ksi

Physical

Density and transition temperatures.

Density

4.44 g/cm³0.16 lb/in³
3.2 g/cm³0.12 lb/in³

Refractive Index

1.85
1.785

Same in both: Light Transmission 100% · Porosity 0%

Thermal

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

Thermal Conductivity

0.79 W/m·K0.46 BTU/hr·ft·°F
0.75 W/m·K0.43 BTU/hr·ft·°F

Specific Heat Capacity

450 J/kg·K0.11 BTU/lb·°F
630 J/kg·K0.15 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

7.4 µm/m·K4.1 µin/in·°F
8.5 µm/m·K4.7 µin/in·°F

Min Service Temperature

-100°C-148 °F
-200°C-328 °F

Same in both: Max Service Temperature (continuous) 400°C752 °F

Electrical

Conductivity and insulation.

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

72 / 100
60 / 100

Manufacturability

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

Machinability

30 / 100
15 / 100

Polishability

82 / 100
85 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

90 MJ/kg38,693 BTU/lb
60 MJ/kg25,795 BTU/lb

Embodied Carbon (primary production)

7 kg CO₂/kg
4 kg CO₂/kg

Embodied Water

60 L/kg7.2 gal/lb
30 L/kg3.6 gal/lb

Typical Recycled Content

3%
20%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

25.9 MN·m/kg
28.8 MN·m/kg

Same in both: Thermal Diffusivity 0.4 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 scale

Manufacturing and finishing

CapabilityN-LASFN9N-SF11
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

N-LASFN9 vs N-SF11 — frequently asked

What is the difference between N-LASFN9 and N-SF11?

N-LASFN9 and N-SF11 are both glass grades. N-LASFN9 is harder — 620 HV against 470 HV for N-SF11 — which matters for wear surfaces and threads. N-SF11 is lighter (3.2 g/cm³ vs 4.44 g/cm³ for N-LASFN9) and N-LASFN9 is stiffer (115 GPa vs 92 GPa).

Which is cheaper, N-LASFN9 or N-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-LASFN9 or N-SF11?

N-LASFN9, by a small margin. Both rate poor for machinability — 30/100 against 15/100 for N-SF11.

Ready to make it?

Upload a CAD file and FabDigit prices the part in N-LASFN9 and N-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.