Within the framework of the Fermilab high field magnet program, cable insul
ation and thermo-mechanical properties of epoxy impregnated Nb3Sn composite
were studied, As a part of cable insulation development, a new wrappable c
eramic insulation was investigated to understand its mechanical properties
and its influence on magnet fabrication technology. Measurements of modulus
of elasticity and Poisson's ratio of Nb3Sn composite made out of ten-stack
samples were performed under compression at room temperature and at 4.2 K.
The results from both monotonic and cyclic loading tests are presented. Fi
nally, measurements of the coefficient of thermal contraction for the compo
site using strain gauges is discussed.