welding characteristics
121Saw — For other uses, see Saw (disambiguation). Saw A crosscut hand saw about 620 mm (24 inches) long Classification Cutting Types Hand saw Back saw Bow saw Circular saw …
122List of ISO standards — This is a list of ISO standards that are discussed in Wikipedia articles. For a list of all the more than 16,000 ISO standards (as of 2007), see the [http://www.iso.org/iso/en/CatalogueListPage.CatalogueList ISO Catalogue] .About 300 of the… …
123Mask — For other uses, see Mask (disambiguation). This stone mask from the pre ceramic neolithic period dates to 7000 BCE and is probably the oldest mask in the world (Musée de la Bible et de la Terre Sainte) …
124Professional diving — Hardhat diving redirects here. Often, hardhat diving is used to specifically mean diving in the old type Standard diving dress. A US Navy diver at work. The umbilical supplying air from the surface is clearly visible Professional diving is a type …
125Polyoxymethylene plastic — Polyoxymethylene (POM), in the USA also commonly known under DuPont s brand name Delrin, is an engineering plastic, a polymer with the chemical formula ( O CH2 )n . It is often marketed and used as a metal substitute. Delrin is a lightweight, low …
126Carburization — (often referred to as carburizing) is a heat treatment process which iron or steel is heated to below the melting point in the presence of a solid, liquid, or gaseous material which decomposes so as to liberate carbon when heated to the… …
127Electric arc furnace — An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Arc furnaces range in size from small units of approximately one ton capacity (used in foundries for producing cast iron products) up to about 400 …
128Titanium alloy — Titanium alloys are metallic materials which contain a mixture of titanium and other chemical elements. Such alloys have very high tensile strength and toughness (even at extreme temperatures), light weight, extraordinary corrosion resistance,… …
