Commodity
Index-linkedBulk Silicone follows a global index more than a boutique mill.
Darker cells mean a higher score for this topic on that metric.
Strength28
Heat resistance80
Fire performance62
Insulation42
Workability76
Circularity40
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Last reviewed Sources & creditsMedia creditsMethodology
Quick answers
Is Silicone non-combustible?
Declared reaction class in this atlas: often high LOI vs organic rubbers. Assemblies still need resistance tests.
Does Silicone insulate?
Thermal mark 42/100 versus the atlas. Conductivity note: ~0.2 W/m·K; filled greases conduct.
What is the density band?
~1.1–1.5 g/cm³
How is it made?
Origin story: Kipping / Rochow 1940s (United Kingdom / US).
Can it be recycled?
Circularity mark 40/100 — editorial, route-specific.
Typical melting or failure heat?
elastomer; resins cure
heat 80 · fire 62
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
Silicone moves as coils, bales, boards or chemicals — check HS codes, not vibes.
Key numbers
~1.1–1.5 g/cm³Density
~0.2 W/m·K; filled greases conductThermal
often high LOI vs organic rubbersFire letter
42Atlas insulation
Producers
Momentive
GE silicone heritage.
Wacker
German silicones.
Dow
Dow Corning after restructure.
Shin-Etsu
Japanese fluids and wafers-adjacent.
Elkem
Silicon metal into silicones.
Xingfa / Hesheng
Chinese capacity.
Ask for the route (primary, scrap, bio) before believing a green label.
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