Atlas index
Form · 3–6 mm
Glass — indicative fig. M·68

High-quality reflective glass with 92-95% light reflectance, consisting of float glass with silver coating, copper layer, and protective paint backing. Available in 3mm, 4mm, and 6mm thicknesses.

01 Physical

Density 2500kg/m³
Specific gravity 2.5
Porosity 0%
Water absorption 0%
Hardness 5.5
UV resistance Moderate - silver protected by glass and coatings
Chemical resistance Good - except ammonia and acids
pH tolerance 5-9
Surface roughness 0.1µm

02 Mechanical

Tensile strength 40MPa
Compressive strength 1000MPa
Flexural strength 45MPa
Poisson's ratio 0.22
Impact resistance Low - requires safety backing for impact zones

03 Thermal

Thermal conductivity 1W/m·K
Specific heat 840J/kg·K
Thermal expansion 9×10⁻⁶/°C

04 Compliance & Fire First question

Combustibility class Non-combustible per AS 1530.1
Fire resistance level Non-rated
Flame spread index 0
Smoke dev. index 0
Heat release rate 0

05 Sustainability & Health

Embodied carbon 11.5
Carbon footprint 11.5
Embodied energy 155MJ/kg
Recyclability 100%
Recycled content 20%
Renewable content 0%
VOC emissions Low - from paint backing only
Toxicity rating Low - lead-free options available
LEED contribution 2

06 Durability · Cost · Logistics

Expected lifespan 20-30 years
Maintenance interval 6 months
Warranty period 5-7 years
Material cost (range) $200-250/m²
Material cost (per unit) $225/m²
Lead time 1-2 weeks standard; 2-4 weeks custom
Lifecycle cost $400-500/m²
Annual maintenance $10-20/m²
Market availability Readily available - all capital cities

07 Assessment

Advantages

  • High reflectivity (92-95%)
  • Excellent optical clarity
  • Available in multiple thicknesses
  • Can be cut and processed to custom sizes
  • Safety backing options available
  • Compliant with Australian standards
  • Established local supply chain
  • Suitable for humid environments when properly sealed
  • Long warranty periods (5-7 years typical)
  • Recyclable substrate

Constraints

  • Susceptible to edge corrosion (black edge)
  • Cannot use ammonia-based cleaners
  • Fragile without safety backing
  • Heavy (7.5-15 kg/m² depending on thickness)
  • Requires professional installation
  • Higher cost than aluminium mirrors
  • Limited exterior applications
  • VOC emissions during manufacture
  • Silver tarnishing if coating damaged
  • Not suitable for high-temperature applications

08 Applications

A1 Bathroom vanity mirrors
A2 Wardrobe doors
A3 Commercial fitouts
A4 Retail displays
A5 Architectural features
A6 Dance studios
A7 Gymnasiums
A8 Elevator interiors
A9 Decorative wall panels
A10 Furniture applications

09 Sources & Standards

Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.

MATERIALS ATLAS · CL·AD M·68 · data indicative — verify per project