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R-689 — Cotton
- Material Id
- Cotton
- Record Id
- 689
- Date
- 8/23/1949
- Delta T (F)
- 24.28
- Delta X (in)
- 0.8951
- Density (lb/ft3)
- 0.73
- Description
- Roll 440951B, Sample # 3, Backing
- Form
- Blanket
- K W Mk (W/mK)
- 0.2622
- Material
- Cotton
- Mean Temp (F)
- 71.55
- R Value per Inch (ft2hF/BTU/in)
- 0.550068
- Rsi per Inch (m2K/W/in)
- 0.096873
- Standard
- Nist Srd 81 API
- Test Method
- ASTM C 177
Source: NIST SRD 81 API