| Material | MJ/(m^3*K) | Source | Comment |
| Aluminum, 2024-T6 | 2.433 | Matweb | |
| Aluminum, Pure | 2.450 | A Heat Transfer Textbook, 4th ed. | |
| Aluminum, 2024-O | 2.433 | Matweb | |
| Aluminum, 2024-T3 | 2.433 | Matweb | |
| Aluminum, 2024-T351 | 2.433 | Matweb | |
| Aluminum, 2024-T4 | 2.433 | Matweb | |
| Aluminum, 6061-T6 | 2.419 | Matweb | |
| Aluminum, 6061-T651 | 2.419 | Matweb | |
| Aluminum, 7075-T6 | 2.698 | Matweb | |
| Aluminum, 7075-T651 | 2.698 | Matweb | |
| Beryllium | 3.402 | Thermtest | |
| Boron | 2.825 | Thermtest | |
| Cadmium | 1.990 | Thermtest | |
| Chromium | 3.257 | A Heat Transfer Textbook, 4th ed. | |
| Cobalt | 3.748 | Thermtest | |
| Constantan | 3.658 | A Heat Transfer Textbook, 4th ed. | |
| Copper, Pure | 3.438 | A Heat Transfer Textbook, 4th ed. | |
| Brass | 3.281 | A Heat Transfer Textbook, 4th ed. | |
| Bronze | 3.696 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Germanium | 1.715 | Thermtest | |
| Gold | 2.492 | A Heat Transfer Textbook, 4th ed. | |
| Iron, Wrought | 3.542 | Thermtest | |
| Iron, Pure | 3.530 | A Heat Transfer Textbook, 4th ed. | |
| Iron, Cast (4% C) | 3.054 | A Heat Transfer Textbook, 4th ed. | |
| Iron, Armco | 3.634 | https://doi.org/10.1063/1.1710018 F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Steel, 1% Chrome | 3.616 | Thermtest | |
| Steel, 1% Carbon | 3.690 | A Heat Transfer Textbook, 4th ed. | |
| 347 Stainless Steel | 3.829 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| 304 Stainless Steel | 3.768 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| SST 17Cr-4Ni, Cond H900 | 3.268 | Matweb | |
| Carpenter 49 | 4.125 | Carpenter catalog | |
| HyMu80 | 4.321 | Carpenter catalog | |
| Lead | 1.478 | A Heat Transfer Textbook, 4th ed. | |
| Lithium | 1.863 | Thermtest | |
| Magnesium | 1.786 | A Heat Transfer Textbook, 4th ed. | |
| Manganese | 3.559 | Thermtest | |
| Molybdenum | 2.565 | A Heat Transfer Textbook, 4th ed. | |
| Nickel, Pure | 3.963 | A Heat Transfer Textbook, 4th ed. | |
| Nichrome | 3.696 | A Heat Transfer Textbook, 4th ed. | |
| Inconel-X | 3.761 | A Heat Transfer Textbook, 4th ed. | |
| Platinum, Pure | 2.853 | A Heat Transfer Textbook, 4th ed. | |
| 60% Pt, 40% Rh | 2.694 | Y. A. Cengel and A. J. Ghajar, Heat and Mass Transfer: Fundamentals and Applications 4th ed., McGraw-Hill, 2011 | |
| Rhenium | 2.898 | Thermtest | |
| Rhodium | 3.013 | Thermtest | |
| Silicon | 1.644 | A Heat Transfer Textbook, 4th ed. | |
| Silver | 2.484 | A Heat Transfer Textbook, 4th ed. | |
| Sodium | 1.177 | Thermtest | |
| Tin (white) | 1.659 | Y. A. Cengel and A. J. Ghajar, Heat and Mass Transfer: Fundamentals and Applications 4th ed., McGraw-Hill, 2011 | |
| Titanium | 2.374 | A Heat Transfer Textbook, 4th ed. | |
| Tungsten | 2.574 | A Heat Transfer Textbook, 4th ed. | |
| Uranium | 2.169 | A Heat Transfer Textbook, 4th ed. | |
| Vanadium | 2.806 | Thermtest | |
| Zinc | 2.772 | A Heat Transfer Textbook, 4th ed. | |
| Zirconium | 1.853 | Thermtest | |
| Aluminum Oxide | 3.038 | A Heat Transfer Textbook, 4th ed. | at 27 deg C |
| Asbestos | 0.313 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Beryllium Oxide | 3.090 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Brick, Common | 1.344 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p640 | |
| Brick, Chrome | 2.520 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p640 | |
| Brick, Fireclay | 1.449 | Thermtest | |
| Brick, Magnesite | 1.920 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p640 | |
| Brick, Masonry | 1.674 | Thermtest | |
| Brick, Silica | 1.355 | C-Therm | |
| Carbon | 1.602 | https://www.spacematdb.com/spacemat/ | |
| Cement Mortar | 1.451 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Concrete | 1.511 | Thermtest | |
| Coal | 1.625 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p640 | |
| Diamond Type I | 1.776 | Thermtest | |
| Diamond Type IIa | 1.782 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p642 | |
| Diamond Type IIb | 1.658 | A Heat Transfer Textbook, 4th ed. | |
| Clay | 1.285 | K. Rolle, Heat and Mass Transfer, 2nd ed. Cengage Learning, 2015 | Soil Clay (wet) |
| Diatomaceous Earth | 0.350 | Thermtest | Three of those options have these values |
| Sand | 1.205 | Thermtest | |
| Corning 7740 | 1.616 | Thermtest | |
| Pyroceram | 2.033 | Thermtest | |
| Window | 2.268 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p640 | |
| Ice | 1.756 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p642 | |
| Cork, granular | 0.301 | Thermtest | |
| Corkboard | 0.304 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Cellulose, loose | 0.093 | http://www.greenspec.co.uk/building-design/insulation-materials-thermal-properties/ | |
| Feltboard | 0.179 | https://www.tradekorea.com/product/detail/P389856/Rigid-graphite-felt-board.html | |
| Glass Fiber | 0.026880 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p642 | |
| Glass Wool | 0.016800 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p642 | |
| Kapok | 0.207 | http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.543.2996&rep=rep1&type=pdf | |
| Magnesia, 85% | 0.179 | Chromalox | |
| Polystyrene | 0.051980 | Thermtest | Polystyrene Foam |
| Rubber, Foam | 0.209200 | Thermtest | |
| Rock Wool | 0.084 | http://www.vdmgroup.com.au/images/files/trading/bnbm-rock-wool.pdf http://documents.newport.gov.uk/NorthgatePublicDocs/05216675.pdf | |
| Sawdust | 0.336 | http://www.greenspec.co.uk/building-design/insulation-materials-thermal-properties/ | |
| Vermiculite, loose | 0.165660 | Thermtest | |
| Magnesium Oxide | 3.150 | A Heat Transfer Textbook, 4th ed. | |
| Plaster | 1.360 | Thermtest | |
| Quartz, fused | 1.639 | Thermtest | |
| Granite | 2.165 | A Heat Transfer Textbook, 4th ed. | |
| Limestone | 2.070 | A Heat Transfer Textbook, 4th ed. | |
| Marble | 2.650 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Sandstone | 1.628 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | |
| Rubber, hard | 2.400 | J. P. Holman, Heat Transfer, 8th ed., McGraw-Hill, 2001, p641 | |
| Skin, human | 2.666 | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3699319/H93 https://www.lboro.ac.uk/microsites/lds/EEC/ICEE/textsearch/92articles/Parsons21992.pdf | |
| Snow, loose | 0.209200 | Thermtest | |
| Snow, packed | 1.151 | Thermtest | |
| Teflon | 2.580 | www.bearingworks.com | Created "Teflon-min-heat-capacity" |
| www.bearingworks.com | 3.220 | Created "Teflon-max-heat-capacity" | |
| Balsa | 0.2991300 | Thermtest | Created "Balsa-min-heat-capacity" |
| 0.7363200 | Thermtest | Created "Balsa-max-heat-capacity" | |
| Cypress | 1.058 | Thermtest | |
| Fir | 1.632 | A Heat Transfer Textbook, 4th ed. | |
| Maple | 1.634 | Thermtest | |
| Oak | 1.434 | A Heat Transfer Textbook, 4th ed. | |
| Pine, yellow | 1.795 | K. Rolle, Heat and Mass Transfer, 2nd ed. Cengage Learning, 2015 | |
| Pine, white | 1.220 | Thermtest | |
| Plywood | 0.660 | A Heat Transfer Textbook, 4th ed. | |
| Wool | 0.041 | http://www.greenspec.co.uk/building-design/insulation-materials-thermal-properties/ | |
| Bismuth, liquid | 1.420 | Thermtest | |
| Lead, liquid | 1.601 | Thermtest | |
| Mercury | 1.863 | Thermtest | |
| Lithium, liquid | 2.147 | Thermtest | |
| Potassium, liquid | 0.672 | Thermtest | |
| Sodium, liquid | 1.284 | Thermtest | |
| Ammonia | 2.880 | A Heat Transfer Textbook, 4th ed. | at 27 deg C |
| Ethyl Alcohol | 1.890 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | at 20 deg C |
| Ethylene Glycol | 2.660 | Thermtest | |
| Freon-12 | 1.296 | A Heat Transfer Textbook, 4th ed. | at 27 deg C |
| Glycerin | 3.016 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | at 20 deg C |
| Unused Engine Oil | 1.669 | F. M. White, Heat and Mass Transfer, Addison-Wesley, 1988 | at 20 deg C |
| Water | 4.184 | Thermtest | |
| Air | 0.001185 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Ammonia | 0.001683 | A Heat Transfer Textbook, 4th ed. | at 0 deg C, 1 atm |
| Argon | 0.000847 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Carbon Dioxide | 0.001533 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Carbon Monoxide | 0.001184 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Helium | 0.000844 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Hydrogen | 0.001172 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Nitrogen | 0.001185 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Oxygen | 0.001197 | A Heat Transfer Textbook, 4th ed. | at 27 deg C, 1 atm |
| Steam | 0.001243 | A Heat Transfer Textbook, 4th ed. | at 373.15 K, 1 atm |