Many future space missions including Large UV/Optical/Infrared Surveyor and Laser Interferometer Space Antenna require metering structures of exceptional geometric stability in order to meet their science goals. Thermal expansion and contraction of these structures is typically a primary concern. The application of a known high-stability bonding method, hydroxide catalysis bonding, to a new structural material, ALLVAR Alloy 30, with the uniquely useful property among metals of a negative coefficient of thermal expansion is studied. We report on measurements of the shear breaking strength of Allvar mated with fused silica (glass), grade 5 Ti-6Al-4V (Ti64), and aluminum 6061-T6 (aluminum). Measured shear breaking strengths ranged from 3 to 16 MPa with a mean of ∼7.5  MPa. Initial series of tests indicated no significant correlation between bonding strength and surface roughness over the range of surface roughness tested.