Explore the Engineering Database more efficiently by signing up for free. Sign up free
R-820 — Fiberboard
- Material Id
- Fiberboard
- Record Id
- 820
- Date
- 2/8/1952
- Delta T (F)
- 23.87
- Delta X (in)
- 0.9449
- Density (lb/ft3)
- 17.92
- Description
- Asphalt Coating (both faces)
- Form
- Board
- K W Mk (W/mK)
- 0.3556
- Manufacturer
- Johns Manville
- Material
- Fiberboard
- Mean Temp (F)
- 72.69
- R Value per Inch (ft2hF/BTU/in)
- 0.40559
- Rsi per Inch (m2K/W/in)
- 0.071429
- Standard
- Nist Srd 81 API
- Test Method
- ASTM C 177
Source: NIST SRD 81 API