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Carbon steels are designated by distinct AISI (American Iron and Steel Institute) four-digit numbers. The first two digits indicate the
grades of the steels, while the last two digits give the nominal carbon content of the alloy in hundredths
of a percent. Here is an example:
If a letter L or B shows up between the second and third digits of an AISI number, it means that this grade is either a Leaded steel or a Boron steel; Sometimes a suffix H is attached to a AISI number to indicate that the steel has been produced to prescribed hardenability limits. Examples are:
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Metal Alloys |
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Alloy Home |
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Steels |
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Carbon Steels |
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General Information |
| Properties | |
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Classification |
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Low-Carbon |
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Medium-Carbon |
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High-Carbon |
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Other Grades |
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Resulfurized |
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High-Mn |
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H-Steels |
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Carbon Steel List |
| AISI 10xx | |
| AISI 11xx | |
| AISI 12xx | |
| AISI 15xx | |
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ASTM Steels |
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Resources |
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Bibliography |
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