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Insulation R Values: greenstone
989 to 990
Insulation R-values and thermal conductivity data from NIST SRD 81 — covers fiberglass, foam, cellulose, mineral wool, and other building insulation materials
| material id | record id | date | delta t (F) | delta x (in) | density (lb/ft3) | description | form | k w mk (W/mK) | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| greenstone | 989 | 5/19/1955 | 2.07 | 0.9754 | 186.72 | Igneous rock | Block | 15.4478 | Greenstone | 59.73 | 0.009336 | 0.001644 | NIST SRD 81 API | ASTM C 177 |
| greenstone | 990 | 5/20/1955 | 2.23 | 0.9716 | 186.72 | Igneous rock | Block | 14.3109 | Greenstone | 52.3 | 0.010078 | 0.001775 | NIST SRD 81 API | ASTM C 177 |
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