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R-904 — Cellular Polystyrene Extruded

Name: Insulation R Values — cellular_polystyrene_extruded: record id 904 · date 6/4/1953 · delta x 1.0066 in · mean temp 40.45 F · delta t 24.33 F
Creator: Engineering Database

Material Id: Cellular Polystyrene Extruded
Record Id: 904
Date: 6/4/1953
Delta T (F): 24.33
Delta X (in): 1.0066
Density (lb/ft3): 1.792
Description: Pore diameter: 0.25 MM to 0.5 MM
Form: Board
K W Mk (W/mK): 0.2631
Manufacturer: Dow Chemical Co.
Material: Cellular Polystyrene, Extruded
Mean Temp (F): 40.45
R Value per Inch (ft2hF/BTU/in): 0.548187
Rsi per Inch (m2K/W/in): 0.096541
Standard: Nist Srd 81 API
Test Method: ASTM C 177
Trade Name: Styrofoam®

Source: NIST SRD 81 API

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