At a glance
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number. Gypsum board is sold as grades, not as a single substance. Chemistry CaSO4·2H2O + paper faces, density ~700–1000 kg/m³, heat band calcines ~80–180 °C (dehydration).
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Gypsum board · Gypsum board is one of 32 materials in this atlas, grouped under
Gypsum board is one of 32 materials in this atlas, grouped under fire: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue. Scores compare Gypsum board with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.
Gypsum board · Seven chapters follow
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number. Gypsum board is sold as grades, not as a single substance. Chemistry CaSO4·2H2O + paper faces, density ~700–1000 kg/m³, heat band calcines ~80–180 °C (dehydration).
Gypsum board · paras 1
Conductivity note: ~0.17 W/m·K. Insulation score 34/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: A2-s1,d0 typical; core A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Gypsum board · paras 1
Origin: Sackett 1894; US Gypsum 1916, United States. The process chapter follows feedstock → conversion → forming → finish → install. Gypsum board (CaSO4·2H2O + paper faces) is a family of grades whose density ~700–1000 kg/m³, heat band calcines ~80–180 °C (dehydration), and fire letter A2-s1,d0 typical; core A1.
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What is the next question after this?
Conductivity note: ~0.17 W/m·K. Insulation score 34/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: A2-s1,d0 typical; core A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Does this page rank people or nations?
This is a reading check for the atlas, not personal advice, a live price, or a booking. It does not replace the full topic page.
Where is the longer entry?
Origin: Sackett 1894; US Gypsum 1916, United States. The process chapter follows feedstock → conversion → forming → finish → install. Gypsum board (CaSO4·2H2O + paper faces) is a family of grades whose density ~700–1000 kg/m³, heat band calcines ~80–180 °C (dehydration), and fire letter A2-s1,d0 typical; core A1.
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