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Insulation R Values: leather
1231 to 1238
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| leather | 1231 | 9/21/1960 | 17.3 | 0.312 | 36.36 | Butt leather, upper, 3 layers stacked, each side | Slab | 0.5185 | Leather | 125.02 | 0.278164 | 0.048987 | NIST SRD 81 API | ASTM C 177 |
| leather | 1236 | 10/18/1960 | 10.65 | 0.2444 | 59.32 | Butt leather, sole | Slab | 0.7385 | Leather | 119.15 | 0.195298 | 0.034394 | NIST SRD 81 API | ASTM C 177 |
| leather | 1237 | 10/19/1960 | 13.77 | 0.2906 | 54.63 | Impregnated | Slab | 0.6837 | Leather | 121.92 | 0.210952 | 0.037151 | NIST SRD 81 API | ASTM C 177 |
| leather | 1238 | 10/20/1960 | 11.93 | 0.2476 | 58.12 | Butt leather, sole | Slab | 0.6712 | Leather | 62.66 | 0.214881 | 0.037843 | NIST SRD 81 API | ASTM C 177 |
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