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R-64 — Fiberboard
- Material Id
- Fiberboard
- Record Id
- 64
- Date
- 9/14/1938
- Delta X (in)
- 0.509
- Density (lb/ft3)
- 16.3
- Description
- ½ in.
- Form
- Board
- K W Mk (W/mK)
- 0.36
- Material
- Fiberboard
- Mean Temp (F)
- 75
- R Value per Inch (ft2hF/BTU/in)
- 0.400633
- Rsi per Inch (m2K/W/in)
- 0.070556
- Standard
- Nist Srd 81 API
Source: NIST SRD 81 API