Salem Specialty Ball Company
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Alumina Oxide Balls
Compressive Strength 330,000 psi
Maximum Useful Temperature 3180F
Thermal Conductivity 35.6 W/m C (@ 20C), 6.3W/m C (@ 800C)
Thermal Expansion 4.6 x 10 to the -6th power /F
Electrical Resistivity >10 to the 14th power Ohm/cm (@25C), 2.5 x 10 to the 6th power Ohm/cm (@900C)
Young's Modulus of Elasticity 54 x 10 to the 6th power psi
Hardness 1365 Vickers
Density .139 lbs/inch to the 3rd power
 

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