Structural Glass Properties: ceramic_frit
Mechanical, thermal, and optical properties for architectural and structural glass types. Covers annealed float (3-19 mm), heat-strengthened (4-15 mm), fully tempered (4-19 mm), laminated annealed and tempered (PVB and SGP interlayers), insulating glass units (double clear, double low-E, double high-performance, triple clear, triple low-E), chemically strengthened (2-3 mm), wired glass, and ceramic frit tempered glass. Each record includes density, elastic modulus, Poisson's ratio, characteristic strength, allowable stress (short and long duration), surface compressive stress range, thermal expansion coefficient, thermal conductivity, U-value (IGU), SHGC, visible transmittance, breakage pattern, and deflection limit. 43 records per EN 572/EN 16612, ASTM E1300, ASTM C1048, and NFRC standards.
| glass type | allowable stress MPa long (MPa) | allowable stress MPa short (MPa) | breakage pattern | characteristic strength MPa (MPa) | deflection limit L over (dimensionless) | density kg per m3 (kg/m^3) | modulus of elasticity GPa (GPa) | notes | poisson ratio (dimensionless) | record key | subtype | surface compressive stress MPa max (MPa) | surface compressive stress MPa min (MPa) | thermal conductivity W per mK (W/(m*K)) | thermal expansion coeff per C (1/degC) | thickness mm (mm) | visible transmittance (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ceramic_frit | 21 | 31 | small_granules | 80 | 60 | 2,500 | 71.7 | Ceramic enamel frit fired onto FT glass during tempering; surface compressive stress reduced vs. unfrit FT (~55-80 MPa range) due to CTE mismatch of frit; strength reduction ~30% from frit coverage; SHGC varies 0.15-0.55 per frit density and color | 0.22 | fully_tempered#6.0 | fully_tempered | 100 | 55 | 1 | 0.000009 | 6 | 0.3 |
| ceramic_frit | 21 | 31 | small_granules | 80 | 60 | 2,500 | 71.7 | 8mm frit FT: standard for spandrel panels and solar shading patterns; allowable per ASTM E1300 with frit reduction factor | 0.22 | fully_tempered#8.0 | fully_tempered | 100 | 55 | 1 | 0.000009 | 8 | 0.25 |
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