Precision cast parts testing is critical to assuring high-quality, consistent investment castings that meet demanding specifications and requirements. There is a wide range of tests and processes that can be employed by the foundry to measure and check physical characteristics, performance and other factors. Mechanical testing is a straightforward way to assess such characteristics as tensile strength and hardness. Advanced technologies like spectrographic analysis can look inside the metal’s structure to look for faults and assure quality. A series of posts will address several of these tests.