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R-422 — Cellular Polystyrene Extruded

Name: Insulation R Values — cellular_polystyrene_extruded: record id 422 · date 4/24/1945 · delta x 1.0083 in · mean temp 88.11 F · delta t 18.05 F
Creator: Engineering Database

Material Id: Cellular Polystyrene Extruded
Record Id: 422
Date: 4/24/1945
Delta T (F): 18.05
Delta X (in): 1.0083
Density (lb/ft3): 2.5
Description: Light grey, Pore diameter: 0.3 MM to 0.5 MM
Form: Board
K W Mk (W/mK): 0.267
Manufacturer: Dow Chemical Co.
Material: Cellular Polystyrene, Extruded
Mean Temp (F): 88.11
R Value per Inch (ft2hF/BTU/in): 0.540179
Rsi per Inch (m2K/W/in): 0.095131
Standard: Nist Srd 81 API
Test Method: ASTM C 177
Trade Name: Dow Q 103.9

Source: NIST SRD 81 API

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