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R-688 — Cotton

Material Id
Cotton
Record Id
688
Date
8/22/1949
Delta T (F)
23.96
Delta X (in)
0.8938
Density (lb/ft3)
0.76
Description
Roll 41799T, Sample # 2, Backing
Form
Blanket
K W Mk (W/mK)
0.2633
Material
Cotton
Mean Temp (F)
71.24
R Value per Inch (ft2hF/BTU/in)
0.54777
Rsi per Inch (m2K/W/in)
0.096468
Standard
Nist Srd 81 API
Test Method
ASTM C 177

Source: NIST SRD 81 API

cotton — record id 688 · rsi per inch 0.0964679 m2K/W/in · r value per inch 0.54777 ft2hF/BTU/in · k w mk 0.2633 W/mK · mean temp 71.24 F | Insulation R Values | Engineering Database