ORNL-4191 - the Molten Salt Energy Technologies Web Site

Table 17.1.
Bulk
Graphite Orienta tiona Dens it y
Grade
(g/cm
210
Summary of Some of the Properties of lsntropic Graphite
Specific Flexural Fracture Modulus of Permeability
Resistance Strength Strain Elasticity to Helium Porosity
(rnicrohms/cm) (psi)' e%) (psi)' (cm2isec)' (a)
x 106 x
H-315A 1 I-L 1.830(29)d 985") 4790(4) 0.49(4) 1.35(4) 8.ge 11.70y)
c 890(') 5880(4) 0.19(4) 1.65(4)
H-335 I I-L 1.820'' 3, 973(13) 4240(6) 0.48(6) 1.29(6) 6.8 12.07
11-336 ' 1-1, 1.823(13) 850(l3) 49OOc6) 0.49(6) 1.47(6) 3.6 13.24
H-337 1 I-L 1.967(13) 901(13) 7210(6) 0.70(6) 1.82(6) 7.27
H-338 I I-', 1.920('~) 1235(13) 6320(6) 0.54(6) 1.81(6) 6.91
a"ll-L" indicates that the length of the specimen was taken parallel with the length of the stock.
"C" indicates that the length of the specimen was taken parallel with a chord in the pipe circle.
bWork performed by C. R. Kennedy.
'Work performed by R. B. Evans 111.
dThe superscript numbers in parentheses indicate the number of values aberaged. Absence of superscript
numbers indicates that the data are from a single specimen.
eMeasured perpendicular to the length of the stock.
Graphite Grade Manufacturer Type
Table 17.2. Current Fobricotion of Graphite Pipe for MSBR Studies
-. .
Nominal Pipe Dimensions (in.)
OD ID Total Length
~~
.... . .... ~ .... ~~~~ ~
...................
Remarks
1425-61 A Anisotropic 39; 2 14 306a Received 12-23-66
H-337 B Isotropic 5 2235, 36' To be shipped by 10-1-67
2j/4 1 '4 768'
or sooner
BY12 C Isotropic 5 223/2 C To be supplied during
aRandom lengths, 38 to 51 in.
'Random lengths, 10 to 36 in.
2 1/, 1 5 C
'Random lengths, 10 to 48 in.; total lengths not fixed at this time.
that approach MSBR requirements. Reducing the
permeability below these by orders of magnitude
appears to be difficult with conventional tech-
niques. This has prompted the backup work on
sealing graphite with metal or pyrolytically de.-
posited graphite that is discussed later in this
section.
FY 1968
We are receiving potential irradiation samples of
anisotropic and isotropic graphites in small quantities
from Carbon Products Division of Union Carbide
Corporation, the Chemical Engineering Development
Department of the Y-12 Plant,4 Great Lakes
-~
40perated by the Union Carbide Corporation for the
U.S. Atomic Energy Commission.