Sea-Aisi Coding
Points : Sea-Aisi Coding, Definition Definition The society of automotive Engineers, in conjunction with the American Iron and steel Institute, has adopted a steel classification system that is used by most of the steel-producing industries.
The coding or classification system contains a four or five digit number with a letter prefix. The prefix indicates the type of furnace in which the steel was produced, and also whether it is basic or acid. The prefix letter are B, acid Bessemer; C, basic open-hearth; D, acid open- hearth; and E, electric. The interpretation of the digits in the coding system is presented for example, 1XXX series steel indicates a carbon steel. The coded number 1005 indicates a plain low carbon steel with 0.05 percent carbon. A steel with a number of 1230 is a free-machining resulferized, rephosphorized, low carbon steel that will respond to heat treating.
The first digit in the classification system identifies the major alloying ingredient. The second digit identifies the approximate percentage of that alloying ingredient. The last two or three digits generally indicate the carbon content by percentage or in points, where 100 points equal 1 percent. For example, low carbon steels are designated from 1005 to 130, which means that the carbon content ranges form 0.05 to 0.03 percent. Medium carbon steels have an SAEA ISI code indicating 0.3 to 0.55 percent carbon, and the numbering system for a plain carbon steel is 1030 to 1055.
Points : Sea-Aisi Coding, Definition Definition The society of automotive Engineers, in conjunction with the American Iron and steel Institute, has adopted a steel classification system that is used by most of the steel-producing industries.
The coding or classification system contains a four or five digit number with a letter prefix. The prefix indicates the type of furnace in which the steel was produced, and also whether it is basic or acid. The prefix letter are B, acid Bessemer; C, basic open-hearth; D, acid open- hearth; and E, electric. The interpretation of the digits in the coding system is presented for example, 1XXX series steel indicates a carbon steel. The coded number 1005 indicates a plain low carbon steel with 0.05 percent carbon. A steel with a number of 1230 is a free-machining resulferized, rephosphorized, low carbon steel that will respond to heat treating.
The first digit in the classification system identifies the major alloying ingredient. The second digit identifies the approximate percentage of that alloying ingredient. The last two or three digits generally indicate the carbon content by percentage or in points, where 100 points equal 1 percent. For example, low carbon steels are designated from 1005 to 130, which means that the carbon content ranges form 0.05 to 0.03 percent. Medium carbon steels have an SAEA ISI code indicating 0.3 to 0.55 percent carbon, and the numbering system for a plain carbon steel is 1030 to 1055.
No comments:
Post a Comment
Dont paste link here..