IX. THERMAL EXPANSIVITY OF SOLIDS

Sources of Data: Erfling 1939
THERMAL EXPANSION OF TIN (WHITE)
Other References: Cohen and Olie 1910
Dorsey 1907
Gruneisen 1910
Discussion:
Temp
0
K
0
10
20
30
40
50
60
70
80
90
00
20
447
447
445
441
433
423
412
399
385
371
356
3 24
Taken from NBS 29
I1
II
I1
I1
I1
I1
II
It
II
II
11
Anisotropic. The above values were calculated
from the relation, Mean Value = 1/3 (11 ) +
2/3 (J.), where ( 11 ) and (I.) signify the same
property measured parallel and perpendicular,
respectively, to the tetragonal axis.
Thewlis and Davey (1954) measured the lattice
parameter of grey tin, a brittle form with
diamond-type lattice that is stable below 18OC.
Their data cover the range, -130 to +20°C, and
are, represented by a constant expansion coefficient,
dL/LdT = 4.7 x 10-6deg'1C. See also
Cohen and Olie (1910) . The ordinary ductile
variety (white tin) if pure may transform to
grey tin at low ambient temperatures. but is
stabilized by impurities.
Table of
- 1 3
L dT
per OK
0.
-5
.07 x 10
I1 .3
.6
.9
1.1
1.2
1.3
1.42
1.50
1.56
1.64
11
II
I1
I1
It
I1
II
I1
I1
Selected Values
Temp.
0
K
140
160
180
200
220
240
2 60
273
280
293
300
IX-2-1
L
293 - LT
L293
290
255 I'
219 It
183 I'
145 I'
106 I'
66.7 I'
40.7 'I
26.5 'I
0.0
-14.4 'I
--
1 dL
L dT
per OK
1.71 x
1.77
1.82
1.87
1.91
1.95
1.99
2.01
2.03
2.05
2.06
II
11
I1
I1
II
II
II
I1
I1
I1