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R-691 — Cotton
- Material Id
- Cotton
- Record Id
- 691
- Date
- 8/25/1949
- Delta T (F)
- 24.21
- Delta X (in)
- 0.5945
- Density (lb/ft3)
- 0.79
- Description
- Roll 41012B, Sample # 1A, Backing
- Form
- Blanket
- K W Mk (W/mK)
- 0.2594
- Material
- Cotton
- Mean Temp (F)
- 71.56
- R Value per Inch (ft2hF/BTU/in)
- 0.556006
- Rsi per Inch (m2K/W/in)
- 0.097918
- Standard
- Nist Srd 81 API
- Test Method
- ASTM C 177
Source: NIST SRD 81 API