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R-681 — Cellular Polystyrene Extruded

Name: Insulation R Values — cellular_polystyrene_extruded: record id 681 · date 6/22/1949 · delta x 1.0597 in · mean temp 71 F · delta t 23.79 F
Creator: Engineering Database

Material Id: Cellular Polystyrene Extruded
Record Id: 681
Date: 6/22/1949
Delta T (F): 23.79
Delta X (in): 1.0597
Density (lb/ft3): 1.575
Description: Pore diameter: 0.5 MM to 1.5 MM
Form: Board
K W Mk (W/mK): 0.3297
Manufacturer: Dow Chemical Co.
Material: Cellular Polystyrene, Extruded
Mean Temp (F): 71
R Value per Inch (ft2hF/BTU/in): 0.437452
Rsi per Inch (m2K/W/in): 0.07704
Standard: Nist Srd 81 API
Test Method: ASTM C 177
Trade Name: Dow Q 103.7

Source: NIST SRD 81 API

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