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R-326 — Rock Wool

Material Id
Rock Wool
Record Id
326
Date
5/19/1943
Delta T (F)
25.64
Delta X (in)
1.01
Density (lb/ft3)
5.5
Description
Machine blown, Removed by hand, Packed in Frame
Form
Loose
K W Mk (W/mK)
0.2947
Manufacturer
Johns Manville
Material
Rock Wool
Mean Temp (F)
99.86
R Value per Inch (ft2hF/BTU/in)
0.489406
Rsi per Inch (m2K/W/in)
0.086189
Standard
Nist Srd 81 API

Source: NIST SRD 81 API

rock_wool — record id 326 · date 5/19/1943 · mean temp 99.86 F · rsi per inch 0.0861893 m2K/W/in · r value per inch 0.489406 ft2hF/BTU/in | Insulation R Values | Engineering Database