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R-327 — Perlite

Name: Insulation R Values — perlite: record id 327 · rsi per inch 0.0560335 m2K/W/in · r value per inch 0.318173 ft2hF/BTU/in · date 5/22/1943 · k w mk 0.4533 W/mK
Creator: Engineering Database

Material Id: Perlite
Record Id: 327
Date: 5/22/1943
Delta T (F): 18.49
Delta X (in): 1.015
Density (lb/ft3): 10.6
Description: Fine Powder Placed in Container
Form: Loose
K W Mk (W/mK): 0.4533
Material: Perlite
Mean Temp (F): 94.56
R Value per Inch (ft2hF/BTU/in): 0.318173
Rsi per Inch (m2K/W/in): 0.056034
Standard: Nist Srd 81 API

Source: NIST SRD 81 API

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