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Insulation R Values: alumina powder
1258 to 1642
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) | manufacturer | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method | trade name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| alumina powder | 1258 | 1/10/1961 | 21.46 | 0.9811 | 25.34 | Pure alumina powder (from NBS) | Loose | 0.6952 | NBS | Alumina Powder | 128.7 | 0.207462 | 0.036536 | NIST SRD 81 API | ASTM C 177 | — |
| alumina powder | 1259 | 1/11/1961 | 22.49 | 0.9794 | 25.38 | Pure alumina powder (from NBS) | Loose | 0.6721 | NBS | Alumina Powder | 71.95 | 0.214593 | 0.037792 | NIST SRD 81 API | ASTM C 177 | — |
| alumina powder | 1307 | 12/7/1961 | 22.5 | 0.9831 | 23.87 | Pure alumina powder, sieved through 100 mesh (from NBS) | Loose | 0.5304 | NBS | Alumina Powder | 129.13 | 0.271923 | 0.047888 | NIST SRD 81 API | ASTM C 177 | — |
| alumina powder | 1308 | 12/8/1961 | 22.93 | 0.9827 | 25.3 | Pure alumina powder, sieved through 100 mesh (from NBS) | Loose | 0.5784 | NBS | Alumina Powder | 129.5 | 0.249357 | 0.043914 | NIST SRD 81 API | ASTM C 177 | — |
| alumina powder | 1340 | 5/7/1962 | 22.95 | 1.0148 | 8.646 | — | Loose | 0.2838 | — | Alumina Powder | 129.5 | 0.508203 | 0.0895 | NIST SRD 81 API | ASTM C 177 | Alcoa Hydral® 705 |
| alumina powder | 1346 | 5/16/1962 | 23.2 | 1.0201 | 8.29 | Calcined, conditioned at 1200 °C, 1 h | Loose | 0.2925 | — | Alumina Powder | 129.69 | 0.493087 | 0.086838 | NIST SRD 81 API | ASTM C 177 | Alcoa Hydral® 705 |
| alumina powder | 1347 | 5/22/1962 | 23.29 | 1.0172 | 28.54 | NBS ceramic core powder and fired alumina from NBS metals apparatus | Loose | 0.8447 | — | Alumina Powder | 129.85 | 0.170745 | 0.03007 | NIST SRD 81 API | ASTM C 177 | — |
| alumina powder | 1424 | 2/28/1963 | 22.88 | 1.0079 | 30.24 | Calcined, low soda | Loose | 0.5596 | — | Alumina Powder | 129.6 | 0.257734 | 0.04539 | NIST SRD 81 API | ASTM C 177 | Alcoa Hydral® 705 |
| alumina powder | 1641 | 3/2/1966 | 20.66 | 1.056 | 103.56 | Al<sub>2</sub>O<sub>3</sub> | Loose | 1.5486 | — | Alumina Powder | 134.04 | 0.093134 | 0.016402 | NIST SRD 81 API | ASTM C 177 | DeGussit E250 |
| alumina powder | 1642 | 3/3/1966 | 23.76 | 1.0538 | 103.77 | Al<sub>2</sub>O<sub>3</sub> | Loose | 1.3592 | — | Alumina Powder | 18.71 | 0.106112 | 0.018687 | NIST SRD 81 API | ASTM C 177 | DeGussit E250 |
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