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R-682 — Cellular Polystyrene Extruded

Name: Insulation R Values — cellular_polystyrene_extruded: record id 682 · date 6/23/1949 · delta x 0.9754 in · mean temp 70.94 F · delta t 23.51 F
Creator: Engineering Database

Material Id: Cellular Polystyrene Extruded
Record Id: 682
Date: 6/23/1949
Delta T (F): 23.51
Delta X (in): 0.9754
Density (lb/ft3): 0.262
Description: Brown pigment, Pore diameter: 0.5 MM to 1.0 MM
Form: Board
K W Mk (W/mK): 0.4371
Manufacturer: Dow Chemical Co.
Material: Cellular Polystyrene, Extruded
Mean Temp (F): 70.94
R Value per Inch (ft2hF/BTU/in): 0.329965
Rsi per Inch (m2K/W/in): 0.05811
Standard: Nist Srd 81 API
Test Method: ASTM C 177
Trade Name: Dow

Source: NIST SRD 81 API

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