Material          
1Density Specific 1 Thermal Melting Latent  
lb/ft3 Heat Conductivity Point Heat of  
  Btu Btu-in ºF Fusion  
  ---- ---- (Lowest) Btu/lb  
  lb-ºF hr-ft2-ºF      
Allyl, Cast 82.5 0.55 12.1 - -
Alumina - - - -
(AISI Mag 393)
150 - - -
Aluminum Silicate 149 0.2 9.1 3690
(Lava Grade A)
- - - -
Alundum - 0.186 - - -
Amber 65.6 - - - -
Asbestos 36 0.25 0.44 - -
Ashes 40-45 0.2 0.49 - -
Asphalt 65 0.4 1.2 250± 40
Bakelite Resin, Pure 74-81 0.3-0.4 - - -
Barium Chloride 240 0.1 - 1697 -
Beeswax 60 - 1.67 144 75
Boron Nitride - - - - -
(Compacted) 142 0.33 125 5430 -
Brick, Common Clay 100 0.23 5 - -
Brick, Facing/Building 140 0.22 8 - -
& Mortors - - - - -
Calcium Chloride 157 0.17 - 1422 72
Carbon 138 0.2 165 6700 -
Carnauba Wax 62.4 0.8 - - -
Cement, Portland Loose 94 0.19 2.04
Cerafelt Insulation 3 0.25 @ 1000º 1.22
Ceramic Fiber 15-Oct 0.27 -
Chalk 112-175 0.215 5.76
Charcoal Wood 17.5-36 0.242 0.612 - ...-
Chrome Brick - 0.17 9.6 3160 -
Clay 90±10 0.224 9 -- -
Coal (Course Anthercite) 80 0.32 11    
Coal Tars 78 0.35-0.45 -    
Coke 62-88 0.265 - - -
Concrete (Cinder) 100 0.16 5.3
Concrete (Stone) 144 0.156 9.5
Cordierite 131 0.35 9.12
(AISI Mag 202) - - -
Cork 13.5 0.5 0.36 - -
Cotton (Flax, Hemp) 92.4 0.31 0.41
Delrin 88 0.35 1.56
Diamond 219 0.147 13872
Earth, Dry & Packed 94 0.44 0.9
Ethyl Cellulose 67-74 0.32-0.46   - -
Fiberglass 0.75 - 0.28
Microlite® Duct Insulation - - -
Fiberglass 3 - 0.26
Spin-Glas 1000 Insulation - - -
Firebrick, Fireclay 137-150 0.243 6.6 2900 -
Firebrick, Silica 144-162 0.258 7.2 3000
Flourspar - 0.21 - -
Forsterite (AISI Mag 243) 175 - - -
Garnet - 0.176 - -
Glass 165 0.2 5.4 2200 -
Granite 160-175 0.192 13-28 -
Graphite 130 0.2 1.25 -
Ice 57 0.46 15.36 32
Isoprene (Nat'l Rubber) 58 0.48 1 -
Limestone 130-175 0.217 3.6-9 - -
Litharge - 0.055 - -
Magnesia 225 0.234 0.48 5070
Magnesite Brick 159 0.222 10.8-30 -
Magnesium Oxide - - - - -
Before Compaction 147 0.21 3.6
After Compaction 190 0.21 14.4
Magnesium Silicate 175 - 15.6
Marble 150-175 0.21 14.4
- - - 20.4
Marinite® I @ 400ºF 46 0.29 0.89 - -
Melamine Formaldehyde 93 0.4 3
Mica 185 0.2 3
Nylon Fibers 72 0.4-0.5 -
Paper 58 0.45 0.82
Paraffin 56 0.7 1.56 133 63
Phenolic Resin, Cast 84 0.3-0.4 1.1 - -
Phenolic Formaldehyde 78-92 0.38-0.42 - - -
Phenolic, Sheet or Tube - - - - -
Laminated 78 0.3-0.5 2.4 - -
Pitch, Hard 83 - - - -
        300± -
Plastics: - - - - -
ABS 69-76 0.35 1.32
Acrylic - - 2.28
Cellulose Acetate 69-74 0.34 1
Cellulose Acetate 76-83 0.3-0.5 1.2-2.3
-Butyrate - - -
Epoxy 74 0.3-0.4 1.2-1.3
Fluoroplastics 66-88 0.25-0.3 1.2-2.4
Nylon 131-150 0.28 1.68
Phenolic 67-72 0.3-0.5 1.68
Polycarbonate 85-124 0.35 1.02
Polyester 74-78 0.3 1.38
Polyethylene 66-92 0.2-0.35 3.96-5
- 57-60 0.54 2.28
Polyimides - - 3.48
Polypropylene 90 0.27-0.31 2.5-6.8
55-57 0.46 1.72
Plastics: - - - - -
-Polystyrene 66 0.32 0.36-0.96 -
-Polyvinyl Chloride Acetate 72-99 0.2-0.3 0.84-1.2 -
Porcelain 145-155 0.26 10-Jun -
Potassium Chloride 124 0.17 - 1454
Potassium Nitrate 132 0.26 - 633 -
Quartz 138 0.26 9.6 -
Rock Salt - 0.219 - -
Rubber Synthetics 58 0.4 1 1495
Sand, Dry 88-100 0.191 2.26 -
Silica (fused) - 0.316 10 - -
Silicon Carbide 112-125 0.20-0.23 105
- - - 1152
Silicone Rubber 78 0.45 1.5
Soapstone 162-174 0.22 11.3
Sodium Carbonate 135 0.3 - 520 -
Sodium Chloride 135 0.22 1474 -
Sodium Cyanide 94 0.3 1047 -
Sodium Hydroxide Bath 110 0.28 550 72
-(75% NaOH and Mixed Salts) - - - -
Sodium Nitrate 141 0.29 - 584 -
Sodium Nitrite 135 0.3 520
Sodium/Potassium - - - - -
Nitrate Baths: - - - - -
-Draw Temp 275 132 0.32 - - -
Solid
110 0.37 2.4± @ 600ºF 275 94
Liquid - - - - -
-Draw Temp 430 130 0.29 2.4± @ 600ºF 430 49
Solid
115 0.38 - - -
Liquid          
Soil, Dry Including Stones 127 0.4 3.6 - -
Steatite 162 0.2 20.4 -
Stone - 0.2 - -
Stone, Sandstone 130-150 0.22 - -
Sugar 105 0.3 - 320
Sulphur 125 0.203 1.8 230 17
Tallow 60 - - 90± -
Teflon® 135 0.25 1.7 - -
Urea, Formaldehyde 97 0.4 - - -
Vinylidene 107 0.32 - - -
Vinylite 73 0.29 - - -
Wood, Oak 50 0.57 1.2
Wood, Pine 34 0.67 0.9