Natural rubber is one of 32 materials in this atlas, grouped under polymers: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare Natural rubber with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number.
Deep introduction
Deep dive: Natural rubber
Natural rubber ((C5H8)n cis-1,4) is a family of grades whose density ~0.92 g/cm³, heat band elastomer; decomposes on heat, and fire letter combustible; tyres are a fire load.
What “the material” actually is
Natural rubber is sold as grades, not as a single substance. Chemistry (C5H8)n cis-1,4, density ~0.92 g/cm³, heat band elastomer; decomposes on heat.
This atlas treats Natural rubber as a system: mill route, coatings, tests and the cavity it sits in.
Heat, fire and insulation
Conductivity note: ~0.15 W/m·K. Insulation score 38/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: combustible; tyres are a fire load. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
How it is made and used
Origin: Mesoamerican use / Goodyear 1839 / Wickham 1876, Amazonia → Malaysia. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: silicone.
Market and circularity
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 46/100. Ask which scrap, which certificate, which year.
Related atlas
Around Natural rubber
Related atlas entries, a short glossary, and three threads that keep Natural rubber honest.
Circularity mark 46/100 — editorial, route-specific.
Typical melting or failure heat?
elastomer; decomposes on heat
What should it be paired with?
silicone: The high-temp elastomer NR cannot be.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.
Is the fire-performance score a building-code rating?
No. It is an editorial 0–100 teaching mark among materials in this atlas. A real wall or garment needs a named product test, thickness and assembly. This page is not a lab stamp.
When should I read insulation instead of fire?
Use the insulation pick when the question is heat flow — lining, loft, or a cold-bridge — and the fire pick when the question is how the same material behaves in flame. Both numbers already sit on this hub; they answer different jobs.
Does a high sustainability score mean I can skip fire protection?
No. Sustainability here is a relative atlas mark (growth, reuse, embodied story). Bamboo and timber can still char like wood. Fire protection stays a separate specification.
Why is bamboo missing in some languages?
A language URL is published only when the seven chapters are real prose in that language. Bamboo exists in English, Korean, Japanese, Chinese and Spanish. French, German, Portuguese and Russian stay withheld — earlier machine drafts leaked English, so those URLs are not opened.
Icons
Charles Goodyear
United States · 1839
Charles Goodyear is a reference point in the public image of Natural rubber.
John Boyd Dunlop
United Kingdom · 1888
John Boyd Dunlop is a reference point in the public image of Natural rubber.
Michelin Bibendum
France · 1898
Michelin Bibendum is a reference point in the public image of Natural rubber.
Hevea tapping
SE Asia · 20th c.
Hevea tapping is a reference point in the public image of Natural rubber.
Fordlandia
Brazil · 1928
Fordlandia is a reference point in the public image of Natural rubber.
F1 slick
Global · 1950s–
F1 slick is a reference point in the public image of Natural rubber.
Surgical glove
Global · 19th c.–
Surgical glove is a reference point in the public image of Natural rubber.
Eraser
Europe · 18th c.–
Eraser is a reference point in the public image of Natural rubber.
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