Page 418 - Centrifugal Pumps 2E

Table 17-5
Properties of Common Seal Face Materials

CERAMIC CARBIDE CARBON
PROPERTY CAST NI
IRON RESIST 85% 99% TUNGSTEN SILICON RESIN BABBITT BRONZE SIL ICONIZED
(AL203) JAL203) !6% N!) ISI-C! CARBON
MODULUS OF f3 - 16 10.5 - 32 50 90 48 - 57 2.5 - 4.0 1.04 - 2.9 - 4.4 2 2.3
ELASTICITY 16.9 4. !
X IOE6 LB/IN2
TENSILE STRENGTH 65 - 120 20 - 45 20 39 123.25 20.65 8 - 8.6 8 - 8.6 7.5 - 9 2
X IOE3 LB/IN2

CO-EFFICIENT OF 6.6 6.5 - 6.8 3.9 4.3 2.66 1 .06 2. 1 - 2.7 2. ! - 2.7 2.4 - 3, 1 2.4 - 3.2
THERMAL EXPANSION
X IOE-6 IN/IN F

THERMAL 23 - 29 25 - 26 8.5 14.5 4 ! - 4S 41-6 0 6- 9 6- 9 8 - g.5
CONDUCTIVITY 30
BlU.FT/H X FT2 F

DENSITY L8/IN3 0.259 - 0.264 - 0, 123 0.13? 0.59 0.104 0.064 - 0.0ft3 - 0.083 - 0.06 -
0.268 0.268 0.069 0. 1 12 0.097 0.070
HARDNESS BRINELL-"-- ROCKWELL A- ----ROCKWELL 45N--- - — --SHORE ROCKWEtL IS!

^!7 - 269 !31 - 183 »? 8? 93 66 - 88 80-10 5 60-9 5 70 - <K ,„