Alumina-Lime-Silica Glass (IEC G-400) ANN vs Alumina-Lime-Silica Glass (IEC G-400) CS
Glass · Alumina-Lime-Silica Glass (IEC G-400) temper comparison
Alumina-Lime-Silica Glass (IEC G-400) ANN and Alumina-Lime-Silica Glass (IEC G-400) CS are two conditions of the same glass grade, Alumina-Lime-Silica Glass (IEC G-400): ANN (annealed) versus CS (chemically strengthened). The chemistry is identical, so every difference below comes from the condition. Alumina-Lime-Silica Glass (IEC G-400) CS is the stronger of the two: tensile strength 300 MPa (43.5 ksi) against 60 MPa (8.7 ksi) for Alumina-Lime-Silica Glass (IEC G-400) ANN, about 5.0 times as much. Alumina-Lime-Silica Glass (IEC G-400) CS is harder — 660 HV against 620 HV for Alumina-Lime-Silica Glass (IEC G-400) ANN — which matters for wear surfaces and threads. Alumina-Lime-Silica Glass (IEC G-400) ANN runs hotter in service (650°C vs 350°C continuous).
Alumina-Lime-Silica Glass (IEC G-400) ANNChoose it when the part sees heat.
Alumina-Lime-Silica Glass (IEC G-400) CSChoose it when strength drives the design, or when surface hardness matters.
Alumina-Lime-Silica Glass (IEC G-400) ANN vs Alumina-Lime-Silica Glass (IEC G-400) CS: 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.
Alumina-Lime-Silica Glass (IEC G-400) ANNAlumina-Lime-Silica Glass (IEC G-400) CS
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Compressive Strength
Flexural Strength
Shear Strength
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 87 GPa12.6 Msi · Shear Modulus 35 GPa5.1 Msi · Bulk Modulus 57 GPa8.3 Msi · Poisson's Ratio 0.25 · Elongation at Break 0% · Fracture Toughness (K_IC) 0.8 MPa·√m0.73 ksi·√in · Hardness, Knoop 600 HK · Hardness, Mohs 6.5
Physical
Density and transition temperatures.
Same in both: Density 2.6 g/cm³0.09 lb/in³ · Refractive Index 1.53 · Light Transmission 90% · Porosity 0%
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 1.2 W/m·K0.69 BTU/hr·ft·°F · Specific Heat Capacity 840 J/kg·K0.2 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 4.6 µm/m·K2.6 µin/in·°F · Min Service Temperature -190°C-310 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Dielectric Strength 30 kV/mm762 V/mil · Dielectric Constant (1 MHz) 6.3 · Dissipation Factor (1 MHz) 0.004 · Volume Resistivity 1×10¹⁵ 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
Same in both: Polishability 96 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 1.6 kg CO₂/kg · Embodied Water 15 L/kg1.8 gal/lb · Typical Recycled Content 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.
Alumina-Lime-Silica Glass (IEC G-400) ANN vs Alumina-Lime-Silica Glass (IEC G-400) CS — frequently asked
Is Alumina-Lime-Silica Glass (IEC G-400) CS stronger than Alumina-Lime-Silica Glass (IEC G-400) ANN?
Yes. Alumina-Lime-Silica Glass (IEC G-400) CS has a typical tensile strength of 300 MPa (43.5 ksi) against 60 MPa (8.7 ksi) for Alumina-Lime-Silica Glass (IEC G-400) ANN — about 5.0 times as much.
Which condition does FabDigit quote by default, ANN or CS?
ANN is the default Alumina-Lime-Silica Glass (IEC G-400) condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, Alumina-Lime-Silica Glass (IEC G-400) ANN or Alumina-Lime-Silica Glass (IEC G-400) CS?
Alumina-Lime-Silica Glass (IEC G-400) ANN, by a small margin. Both rate not recommended for machinability — 12/100 against 5/100 for Alumina-Lime-Silica Glass (IEC G-400) CS.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Alumina-Lime-Silica Glass (IEC G-400) ANN and Alumina-Lime-Silica Glass (IEC G-400) CS 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.