Table 267 28 1 



LINEAR EXPANSION OF MISCELLANEOUS SUBSTANCES 



The coefficient of cubical expansion may be taken as three times the linear coefficient, t is the tempera- 

 ture or range of temperature, C the coefficient of expansion, and A. the authority. For reference see 

 page 282. 



Substance. 



Brass: 

 Cast. 

 Wire. 



71.5 Cu+ 27.7 Zn + 

 0.3 Sn + 0.5 Pb.. . 



71 Cu + 29 Zn 



Bronze: 

 3 Cu + 1 Sn 



86.3 Cu + 9.7 Sn H 

 4 Zn 



97-6 «P U J" I / hard 

 2.2 Sn + f . 



0.2 P I lsolt 



Caoutchouc 



Constantan 



Ebonite 



Fluor spar: CaFi . 

 German silver. . . . 

 Gold-platinum: 



2 Au + iPt 



Gold-copper: 



2 Au + 1 Cu 



Glass: 



Tube 



Plate 



Crown (mean) . 



Flint 



Jena ther-l i6 ln 1 

 mometer I normal I 



59 UI .... 



Gutta percha 



Ice 



Iceland spar: 



Parallel to axis 



Perpendicular to axis 

 Lead-tin (solder) 



2Pb + iSn 



Magnalium 



Manganin 



Marble 



Paraffin 



Platinum-iridium 

 ioPt + i Ir 



o-ioo 

 16.6-100 



16.6-350 



16.6-957 



16.7-25.3 



4-29 

 25.3-35.4 



0-100 



50-60 



- 191 to+ 16 



20 

 — 20 to — I 



0-80 



0-100 



12-39 



15-100 

 0-16 



16-38 



38-49 

 40 



Substance. 



Platinum silver: 

 1 Pt + 2Ag 



Porcelain 



" Bayeux. 



Quartz: 

 Parallel to axis. . 



Perpend, to axis. 

 Quartz glass 



Rock salt 



Rubber, hard 



Speculum metal. . 

 Topaz: 

 Parallel to lesser 



horizontal axis 

 Parallel to greater 



horizontal axis. 

 Parallel to vertical 



axis 



Tourmaline: 

 Parallel to longi- 

 tudinal axis 



Parallel to horizon 



tal axis 



Type metal 



Vulcanite 



Wedgwood ware. . . 

 Wood: 



Parallel to fiber: 



Ash 



Beech 



Chestnut 



Elm 



Mahogany 



Maple 



Oak 



Pine 



Walnut 



Across the fiber: 



Beech 



Chestnut 



Elm 



Mahogany 



Maple 



Oak 



Pine. .' 



Walnut 



Wax: White 



0-100 



20-790 



I 000- 1 400 



0-80 



— 190 to + 16 



0-80 



— 190 to-)- 16 

 16 to 500 



16-1000 



40 



o° 

 — 160 

 0-100 



16.6-254 

 0-18 



0-100 



10-26 

 26-31 

 31-43 



43-57 



Duralumin, .94 Al, 20-100°, .000023 



Steel, . 14 C, 34.5 Ni 25-100°, .0000037 



Monel metal, 25-100°, .000014 



Insulating materials, Souder-Hidnert, 1919: 



Bakelite, bleached, .... 20-60% .000022 



Celluloid, 20-70°, .000100 



Limestone, 25-100°, .000009 



20-300 , 



25-600°, 

 25-600°, 



Marble 



Porcelain, . . 

 Hard rubber, 



.000025 



.0000136 



.000016 



25-100 



20-200° 



20-60°, 



Hidnert, '2: 



10 — 16 x I0" e 



3 — 11 x IO" 6 



.00008 



Smithsonian Tables 



