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IRG 24 vs N-LASFN9

Glass · grade comparison

IRG 24 and N-LASFN9 are both glass grades. N-LASFN9 is harder — 620 HV against 110 HV for IRG 24 — which matters for wear surfaces and threads. N-LASFN9 is lighter (4.44 g/cm³ vs 4.64 g/cm³ for IRG 24) and N-LASFN9 is stiffer (115 GPa vs 18.3 GPa). On the shop floor, IRG 24 machines more easily (excellent vs poor).

IRG 24Choose it when the part is machined in volume.

N-LASFN9Choose it when surface hardness matters, or when weight is the constraint.

IRG 24 vs N-LASFN9: properties

IRG 24N-LASFN9

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

18.3 GPa2.7 Msi
115 GPa16.7 Msi

Shear Modulus

7.1 GPa1 Msi
44.7 GPa6.5 Msi

Bulk Modulus

14 GPa2.1 Msi
89 GPa12.9 Msi

Poisson's Ratio

0.29
0.29

Tensile Strength (Ultimate)

16 MPa2.3 ksi
—

Elongation at Break

0%
—

Compressive Strength

200 MPa29 ksi
1,000 MPa145 ksi

Flexural Strength

18 MPa2.6 ksi
60 MPa8.7 ksi

Fracture Toughness (K_IC)

0.17 MPa·√m0.15 ksi·√in
0.85 MPa·√m0.77 ksi·√in

Hardness, Vickers

110 HV
620 HV

Hardness, Knoop

104 HK
640 HK

Hardness, Mohs

2.5
6

Physical

Density and transition temperatures.

Density

4.64 g/cm³0.17 lb/in³
4.44 g/cm³0.16 lb/in³

Refractive Index

2.79
1.85

Light Transmission

67%
100%

Same in both: Porosity 0%

Thermal

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

Thermal Conductivity

0.2 W/m·K0.12 BTU/hr·ft·°F
0.79 W/m·K0.46 BTU/hr·ft·°F

Specific Heat Capacity

340 J/kg·K0.08 BTU/lb·°F
450 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

20.7 µm/m·K11.5 µin/in·°F
7.4 µm/m·K4.1 µin/in·°F

Max Service Temperature (continuous)

120°C248 °F
400°C752 °F

Same in both: Min Service Temperature -100°C-148 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in
—

Dielectric Constant (1 MHz)

8.5
—

Volume Resistivity

1×10¹³ Ω·cm
—

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

55 / 100
72 / 100

Manufacturability

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

Machinability

85 / 100
30 / 100

Polishability

85 / 100
82 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

—
90 MJ/kg38,693 BTU/lb

Embodied Carbon (primary production)

—
7 kg CO₂/kg

Embodied Water

—
60 L/kg7.2 gal/lb

Typical Recycled Content

—
3%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

3.9 MN·m/kg
25.9 MN·m/kg

Thermal Diffusivity

0.1 mm²/s
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

CapabilityIRG 24N-LASFN9
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

IRG 24 vs N-LASFN9 — frequently asked

What is the difference between IRG 24 and N-LASFN9?

IRG 24 and N-LASFN9 are both glass grades. N-LASFN9 is harder — 620 HV against 110 HV for IRG 24 — which matters for wear surfaces and threads. N-LASFN9 is lighter (4.44 g/cm³ vs 4.64 g/cm³ for IRG 24) and N-LASFN9 is stiffer (115 GPa vs 18.3 GPa).

Which is cheaper, IRG 24 or N-LASFN9?

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, IRG 24 or N-LASFN9?

IRG 24. Its machinability rates excellent (85/100) against poor (30/100) for N-LASFN9.

Ready to make it?

Upload a CAD file and FabDigit prices the part in IRG 24 and N-LASFN9 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.