Note that the values presented in this section are typical and do not
necessarily reflect measured values for a particular supplier or experimental condition. A more-detailed discussion of some of these properties is provided in the following. Mechanical properties, such as strength, are very extrinsic and depend on many factors including grain size, polishing process, stressed area, etc. An excellent meta-study on data for CVD ZnS published up to 1996 is provided by Gibson et al. Note that particularly with CVD ZnS, but with HIPed ZnS also, some anisotropies are observed depending on the orientation of the growth direction, as discussed in Ref. 4 and below. Values included in Tables A.1 and A.2 can be taken as average data.
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