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R-975 — Fiberboard
- Material Id
- Fiberboard
- Record Id
- 975
- Date
- 2/21/1955
- Delta T (F)
- 19.19
- Delta X (in)
- 0.5197
- Density (lb/ft3)
- 18.71
- Description
- Asphalt impregnated, ½ in.
- Form
- Board
- K W Mk (W/mK)
- 0.3706
- Material
- Fiberboard
- Mean Temp (F)
- 69.58
- R Value per Inch (ft2hF/BTU/in)
- 0.389174
- Rsi per Inch (m2K/W/in)
- 0.068538
- Standard
- Nist Srd 81 API
- Test Method
- ASTM C 177
Source: NIST SRD 81 API