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R-634 — Perlite

Name: Insulation R Values — perlite: record id 634 · rsi per inch 0.043234 m2K/W/in · r value per inch 0.245494 ft2hF/BTU/in · date 11/9/1948 · k w mk 0.5875 W/mK
Creator: Engineering Database

Material Id: Perlite
Record Id: 634
Date: 11/9/1948
Delta T (F): 23.27
Delta X (in): 0.9804
Density (lb/ft3): 24.76
Description: Specimens Placed in Wood Frames (TUC-107)
Form: Loose
K W Mk (W/mK): 0.5875
Material: Perlite
Mean Temp (F): 70.62
R Value per Inch (ft2hF/BTU/in): 0.245494
Rsi per Inch (m2K/W/in): 0.043234
Standard: Nist Srd 81 API
Test Method: ASTM C 177

Source: NIST SRD 81 API

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perlite — record id 634 · rsi per inch 0.043234 m2K/W/in · r value per inch 0.245494 ft2hF/BTU/in · date 11/9/1948 · k w mk 0.5875 W/mK | Insulation R Values | Engineering Database