Hilft das zum Weitersuchen? A.I.S.I.--S.A.E. Steel Specifications The ever-growing variety of chemical compositions and quality requirements of steel specifications have resulted in several thousand different combinations of chemical elements being specified to meet individual demands of purchasers of steel products. The S.A.E. developed a system of nomenclature for identification of various chemical compositions which symbolize certain standards as to machining, heat treating, and carburizing performance. The American Iron and Steel Institute has now gone further in this regard with a new standardization setup with similar nomenclature, but with restricted carbon ranges and combinations of other elements which have been accepted as standard by all manufacturers of bar steel in the steel industry. The Society of Automotive Engineers have, as a result, revised most of their specifications to coincide with those set up by the American Iron and Steel Institute. PREFIX LETTERS No prefix for basin open-hearth alloy steel. (B) Indicates acid Bessemer carbon steel. © Indicates basic open-hearth carbon steel (E) Indicates electric furnace steel. NUMBER DESIGNATIONS (10XX series) Basic open-hearth and acid Bessemer carbon steel grades, non-sulfurized and non-phosphorized. (11XX series) Basic open-hearth and acid Bessemer carbon steel grades, sulfurized but not phosphorized. (1300 series) Manganese 1.60 to 1.90% (23XX series) Nickel 3.50% (25XX series) Nickel 5.0% (31XX series) Nickel 1.25%-chromium 0.60% (33XX series) Nickel 3.50%-chromium 1.60% (40XX series) Molybdenum (41XX series) Chromium molybdenum (43XX series) Nickel-chromium-molybdenum (46XX series) Nickel 1.65%-molybdenum 0.25% (48XX series) Nickel 3.25%-molybdenum 0.25% (51XX series) Chromium (52XX series) Chromium and high carbon (61XX series) Chromium vanadium (86XX series) Chrome nickel molybdenum (87XX series) Chrome nickel molybdenum (92XX series) Silicon 2.0%-chromium (93XX series) Nickel 3.0%-chromium-molybdenum (94XX series) Nickel-chromium-molybdenum (97XX series) Nickel-chromium-molybdenum (98XX series) Nickel-chromium-molybdenum Hier der LINK