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R-328 — Perlite

Name: Insulation R Values — perlite: record id 328 · rsi per inch 0.0586334 m2K/W/in · r value per inch 0.332936 ft2hF/BTU/in · date 5/31/1943 · k w mk 0.4332 W/mK
Creator: Engineering Database

Material Id: Perlite
Record Id: 328
Date: 5/31/1943
Delta T (F): 19.08
Delta X (in): 1.017
Density (lb/ft3): 8.7
Description: Granules, 3 mm, Placed in Container
Form: Loose
K W Mk (W/mK): 0.4332
Material: Perlite
Mean Temp (F): 95.07
R Value per Inch (ft2hF/BTU/in): 0.332936
Rsi per Inch (m2K/W/in): 0.058633
Standard: Nist Srd 81 API

Source: NIST SRD 81 API

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