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R-1221 — Fiberboard

Name: Insulation R Values — fiberboard: record id 1221 · rsi per inch 0.073368 m2K/W/in · r value per inch 0.416603 ft2hF/BTU/in · k w mk 0.3462 W/mK · date 7/22/1960
Creator: Engineering Database

Material Id: Fiberboard
Record Id: 1221
Date: 7/22/1960
Delta T (F): 23.24
Delta X (in): 1.0213
Density (lb/ft3): 14.16
Description: Insulation board, 1 in.
Form: Board
K W Mk (W/mK): 0.3462
Material: Fiberboard
Mean Temp (F): 72.61
R Value per Inch (ft2hF/BTU/in): 0.416603
Rsi per Inch (m2K/W/in): 0.073368
Standard: Nist Srd 81 API
Test Method: ASTM C 177

Source: NIST SRD 81 API

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