This chapter contains basic information pertaining to. properties and identification of metal and heat-treating. procedures used for metals. For more specific information on. metal and heat-treating techniques, refer to TM 43-0106. METAL CLASSIFICATION. All metals may be classified as ferrous or nonferrous.
UHMW (Ultra High Molecular Weight Polyethylene) is an outstanding choice for relatively low cost abrasion, impact, and chemical resistance. UHMW provided by Interstate Plastics is also known by brand names including IPX, Polystone, Tecafine, Dyneema, TivarÂ®, Polysteel, GUR, Utec and Mipelon. Known for an extremely high molecular weight, UHMW features an unsurpassed combination of slickness, toughness and chemical resistance. UHMW's molecular weight ranges from 3.1 million to 100 million grams per mole, with an abrasion resistance that continues to improve as molecular weight increases.
It is a poor choice as a synthetic ice skating surface for several reasons! UHMW is a very good product when used as intended. As an example, UHMW is commonly used to line dump beds of mining trucks because UHMW is very hard, smooth and does not scar easily. It is, by nature, difficult to keep flat. Waving and warping of sheet material is common; therefore, it is typically installed with heavy-duty nuts and bolts passing through drill holes in the UHMW sheet and the subsurface framework to reduce warping.