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R-633 — Perlite

Name: Insulation R Values — perlite: record id 633 · rsi per inch 0.0499116 m2K/W/in · r value per inch 0.283411 ft2hF/BTU/in · date 11/8/1948 · k w mk 0.5089 W/mK
Creator: Engineering Database

Material Id: Perlite
Record Id: 633
Date: 11/8/1948
Delta T (F): 24.06
Delta X (in): 0.9805
Density (lb/ft3): 18.65
Description: Specimens Placed in Wood Frames (TUC-96E)
Form: Loose
K W Mk (W/mK): 0.5089
Material: Perlite
Mean Temp (F): 71.37
R Value per Inch (ft2hF/BTU/in): 0.283411
Rsi per Inch (m2K/W/in): 0.049912
Standard: Nist Srd 81 API
Test Method: ASTM C 177

Source: NIST SRD 81 API

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perlite — record id 633 · rsi per inch 0.0499116 m2K/W/in · r value per inch 0.283411 ft2hF/BTU/in · date 11/8/1948 · k w mk 0.5089 W/mK | Insulation R Values | Engineering Database