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R-679 — Cellular Polystyrene Extruded

Name: Insulation R Values — cellular_polystyrene_extruded: record id 679 · date 6/20/1949 · delta x 1.0096 in · mean temp 71.08 F · delta t 23.87 F
Creator: Engineering Database

Material Id: Cellular Polystyrene Extruded
Record Id: 679
Date: 6/20/1949
Delta T (F): 23.87
Delta X (in): 1.0096
Density (lb/ft3): 1.955
Description: Pore diameter: 0.5 MM to 0.8 MM
Form: Board
K W Mk (W/mK): 0.3023
Manufacturer: Dow Chemical Co.
Material: Cellular Polystyrene, Extruded
Mean Temp (F): 71.08
R Value per Inch (ft2hF/BTU/in): 0.477102
Rsi per Inch (m2K/W/in): 0.084022
Standard: Nist Srd 81 API
Test Method: ASTM C 177
Trade Name: Dow Q 103.13

Source: NIST SRD 81 API

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