A program of tests is described in which pipe materials and steel substrates with various coatings were subjected to fluid-borne sand particle erosion conditions. Sand-water slurry jets were used at velocities between 2–30 m/s and at a jet impingement angle of 90° to create a range of erosive conditions to evaluate the performance of the pipe materials carbon steel AISI 1020, stainless steel AISI 316. Cupro-Nickel 90/10, medium density polyethylene and glass reinforced plastic test coupons. Further tests at an impingement angle of 30° and at 10 and 20 m/s velocity compared the performance of the carbon and stainless steels with various polymeric, metallic and ceramic coatings. Flexible polyurethane seems to have promise for future use in fluid-borne sand particle erosion environments. The erosion mechanisms of flexible polyurethane have been identified as micro-cutting at low angle impingement and fatigue/crack propagation at normal impact.