Lexicon
A
Alloy
Metallic material containing at least two elements. One of these elements must be a metal.
Alloying addition
Chemical element added to steel to influence its properties in a certain way. In the main: nitrogen, silicon, manganese, phosphorous, sulphur, chrome, nickel, molybdenum, copper, vanadium, tungsten, cobalt, lead, aluminium, titanium, tantalum, niobium, boron.
Austenite
Face centred cubic lattice (fcc) mixed crystal structure formed from deposits above the G-S-E line in an iron carbon diagram, also called Gamma mixed crystal compound (pearlite or martensite). Austenite is normally only resistant above 911°C; by adding alloy additives (Ni, Mn) and hyper quenching, Austenite also becomes resistant at room temperature. Austenite’s structure is non-magnetic, tough and has a strength attained through strain hardening (manganese steel, nickel steel, chrome-nickel steel). It is characterised by its high temperature strength and good anti-corrosive and anti-inflammatory properties.
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