Process energy / dust
Mills, fibres, isocyanates, metal fume or silica — name the actual agent.
Darker cells mean a higher score for this topic on that metric.
Strength24
Heat resistance54
Fire performance92
Insulation34
Workability90
Circularity62
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Quick answers
Is Gypsum board non-combustible?
Declared reaction class in this atlas: A2-s1,d0 typical; core A1. Assemblies still need resistance tests.
Does Gypsum board insulate?
Thermal mark 34/100 versus the atlas. Conductivity note: ~0.17 W/m·K.
What is the density band?
~700–1000 kg/m³
How is it made?
Origin story: Sackett 1894; US Gypsum 1916 (United States).
Can it be recycled?
Circularity mark 62/100 — editorial, route-specific.
Typical melting or failure heat?
calcines ~80–180 °C (dehydration)
heat 54 · fire 92
Safety here is encyclopedia, not a workplace assessment. Name the agent: dust, isocyanate, fibre, fume, moisture, fire.
Fire class A2-s1,d0 typical; core A1 is reaction language unless an assembly test is cited.
Hazards
In service
Corrosion, moisture, UV or creep silently retire sections.
Fire products
Smoke, drip, fibres or toxicants depend on chemistry.
Cut / puncture
Handling injuries are more common than brochure failures.
Mis-specification
The wrong grade is the most expensive hazard.
Fire class
Reaction
A2-s1,d0 typical; core A1
Resistance
Assemblies (EI, R, Type X) are not implied by the material letter.
Test families
EN 13501, ASTM E84, ISO 5660, KS F 2271 — they do not equal each other.
People vs structure
Clothing FR and steel R-ratings are different professions.
Environment
Carbon / energy
Better-than-average loop for this atlas, still not zero.
Toxics / fibres
Additives, dusts and processing aids (not always the polymer backbone) drive regulation.
Water
Process water, leachate or moisture swelling.
End of life
Sortability beats theoretical recyclability.
Handling
Store dry and labelled
Grade mix-ups scrap lots.
PPE for the actual agent
Fibres, isocyanates, UV, sharp edges — not a generic “chemicals” pictogram.
Do not improvise fire class
Coatings and cavities change the letter.
Follow the WPS / DFT / compression
Installation is in the specification.
Codes move. Recheck KS, JIS, EN, NFPA and IBC editions for the job’s jurisdiction.
Keep exploring
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Nomex
DuPont’s meta-aramid — fire-fighter turnout, electrical paper and a char that does not melt-drip like nylon.
Overall 65 🧯Intumescent coating
Paints that swell into insulating char — the thin-film way to give steel an R-rating without bulky boards.
Overall 58 🌡️Ceramic fibre
Spun refractory fibres for 1000–1400 °C — kiln linings, gaskets, and a respirable-fibre caution that AES grades try to ease.
Overall 62