What do AISI numbers mean?

The four-digit identification number used to designate carbon steel coils. AISI stands for the American Iron and Steel Institute. The first two digits in the AISI number indicate the grade of steel, while the last two digits give the amount of carbon in the steel.

What is AISI SAE numbering system?

Abstract: The SAE system uses a basic four-digit system to designate the chemical composition of carbon and alloy steels. For many years, certain grades of carbon and alloy steels have been designated by a four-digit AISI/SAE numerical index system that identified the grades according to standard chemical compositions.

What is AISI designation?

Abstract: The American Iron and Steel Institute has established a designation system for structural shapes, which has been adopted by steel producers. A four-numeral series is used to designate graduations of chemical composition of carbon steel.

What does AISI steel stand for?

American Iron and Steel Institute
Explanation: American Iron and Steel Institute (AISI) is an association, established in America, which produces steel. AISI steels are used in machine construction. They are otherwise known as construction steels or structural steels.

Are AISI and SAE the same?

The Society of Automotive Engineers (SAE) designates SAE steel grades. The American Iron and Steel Institute (AISI) originally started a very similar system. Over time they used the same numbers to refer to the same alloy, but the AISI system used a letter prefix to denote the steelmaking process.

What does AISI 4130 mean?

AISI or SAE 4130 grade is a low-alloy steel containing chromium and molybdenum as strengthening agents. The steel has good strength and toughness, weldability and machinability. AISI/SAE 4130 grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength.

How do you read SAE steel?

Carbon steels and alloy steels are designated a four digit number, whereby the first digit indicates the main alloying element(s), the second digit indicates tg (top grade) element(s), and the last two digits indicate the amount of carbon, in hundredths of a percent (basis points) by weight.

What does AISI 1020 mean?

AISI 1020 has low hardenability properties and is a low tensile carbon steel with a Brinell hardness of 119 – 235, and a tensile strength of 410-790 MPa. It is used in a variety of applications due to its cold drawn or turned and polished finish property.

Where are AISI standards?

All AISI Standards are available for free electronic download at www.aisistandards.org.

What is SAE material?

The SAE steel grades system is a standard alloy numbering system (SAE J1086 – Numbering Metals and Alloys) for steel grades maintained by SAE International. In the 1930s and 1940s, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels.

Is AISI 4130 low carbon steel?

AISI 4130 alloy steel contains chromium and molybdenum as strengthening agents. It has low carbon content, and can be welded easily.

What do the AISE/SAE steel numbers mean?

AISI/SAE steel numbers are indicated below. Alloy steels and carbon steels can be designated with specific grades by a four-digit AISE/SAE numerical index system. The system is based on the chemical compositions of the steels and alloys. the first digit indicates that this is plain carbon steel.

What is the SAE-AISI classification system?

The SAE-AISI system then classifies all other alloy steels using the same four digit index as follows: 2 – Nickel steels; 3 – Nickel-chromium steels; 4 – Molybdenum steels; 5 – Chromium steels; 6 – Chromium-vanadium steels; 7 – Tungsten-chromium steels; 9 – Silicon-manganese steels.

What are SAE steel grades?

The Society of Automotive Engineers (SAE) designates SAE steel grades. These are four digit numbers which represent chemical composition standards for steel specifications. The American Iron and Steel Institute (AISI) originally started a very similar system.

What does AISE stand for?

AISI – American Iron and Steel Institute SAE – Society of Automotive Engineers Alloy steels and carbon steels can be designated with specific grades by a four-digit AISE/SAE numerical index system. The system is based on the chemical compositions of the steels and alloys.