Commodity
Index-linkedBulk Glass follows a global index more than a boutique mill.
Darker cells mean a higher score for this topic on that metric.
Strength50
Heat resistance58
Fire performance88
Insulation28
Workability55
Circularity70
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Last reviewed Sources & creditsMedia creditsMethodology
Quick answers
Is Glass non-combustible?
Declared reaction class in this atlas: A1. Assemblies still need resistance tests.
Does Glass insulate?
Thermal mark 28/100 versus the atlas. Conductivity note: ~1 W/m·K.
What is the density band?
~2.5 g/cm³
How is it made?
Origin story: Mesopotamia / Egypt; float 1959 (Near East → St Helens).
Can it be recycled?
Circularity mark 70/100 — editorial, route-specific.
Typical melting or failure heat?
softens ~500–700 °C
heat 58 · fire 88
Prices are bands. A 2024 coil is not a 2026 contract. Labour and certification often dwarf the commodity.
Producers listed are landmarks for orientation, not a ranking or a procurement list.
Cost bands
Specified grade
PremiumTight chemistry, cleanliness or certification multiplies the unit price.
System
InstalledBoards, coats and labour dwarf kilogram prices.
Certified / medical / aero
HighestPaperwork is the product.
Trial / green route
PolicyLow-carbon or bio routes still trade on certificates.
Regions
East Asia
Volume production and finishing.
Europe
Standards (EN, Euroclass) and specialty.
North America
ASTM / NFPA language and large domestic mills.
Korea / Japan
High-spec sheet, fibres, electronics-adjacent ceramics.
Resource belts
Ore, plantations or energy that feed primary routes.
Global trade
Glass moves as coils, bales, boards or chemicals — check HS codes, not vibes.
Key numbers
~2.5 g/cm³Density
~1 W/m·KThermal
A1Fire letter
28Atlas insulation
Producers
NSG / Pilkington
Float heritage.
Saint-Gobain
Glass and insulation group.
AGC
Japanese architectural glass.
Guardian
US float and coatings.
Corning
Specialty and cover glass.
Vitro
Americas float.
Ask for the route (primary, scrap, bio) before believing a green label.
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