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R-424 — Cellular Polystyrene Extruded

Name: Insulation R Values — cellular_polystyrene_extruded: record id 424 · date 5/1/1945 · delta x 1.0788 in · mean temp 88.45 F · delta t 18.36 F
Creator: Engineering Database

Material Id: Cellular Polystyrene Extruded
Record Id: 424
Date: 5/1/1945
Delta T (F): 18.36
Delta X (in): 1.0788
Density (lb/ft3): 1.6
Description: White pigment, Pore diameter: 0.8 MM to 1.2 MM
Form: Board
K W Mk (W/mK): 0.2812
Manufacturer: Dow Chemical Co.
Material: Cellular Polystyrene, Extruded
Mean Temp (F): 88.45
R Value per Inch (ft2hF/BTU/in): 0.512901
Rsi per Inch (m2K/W/in): 0.090327
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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