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R-429 — Cotton

Name: Insulation R Values — cotton: record id 429 · rsi per inch 0.0883478 m2K/W/in · r value per inch 0.501662 ft2hF/BTU/in · k w mk 0.2875 W/mK · mean temp 91.51 F
Creator: Engineering Database

Material Id: Cotton
Record Id: 429
Date: 6/9/1945
Delta T (F): 20.78
Delta X (in): 1.0132
Density (lb/ft3): 4.59
Description: Cotton, Shredded Material w/asphalt Paper and Brown Paper Facers
Form: Blanket
K W Mk (W/mK): 0.2875
Manufacturer: Cary Insulation Co.
Material: Cotton
Mean Temp (F): 91.51
R Value per Inch (ft2hF/BTU/in): 0.501662
Rsi per Inch (m2K/W/in): 0.088348
Standard: Nist Srd 81 API
Test Method: ASTM C 177

Source: NIST SRD 81 API

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cotton — record id 429 · rsi per inch 0.0883478 m2K/W/in · r value per inch 0.501662 ft2hF/BTU/in · k w mk 0.2875 W/mK · mean temp 91.51 F | Insulation R Values | Engineering Database