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R-1170 — Glass

Material Id
Glass
Record Id
1170
Date
9/24/1959
Delta T (F)
12.22
Delta X (in)
0.9659
Density (lb/ft3)
138.66
Description
Corning Ordinary Chemical glass, 1 in.
Form
Block
K W Mk (W/mK)
7.7119
Manufacturer
Corning Glass Works
Material
Glass
Mean Temp (F)
120.9
R Value per Inch (ft2hF/BTU/in)
0.018702
Rsi per Inch (m2K/W/in)
0.003294
Standard
Nist Srd 81 API
Test Method
ASTM C 177
Trade Name
Pyrex® 7740

Source: NIST SRD 81 API

glass — record id 1170 · rsi per inch 0.00329361 m2K/W/in · r value per inch 0.018702 ft2hF/BTU/in · date 9/24/1959 · k w mk 7.7119 W/mK | Insulation R Values | Engineering Database