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ASTM A36/A36M-08 Structural A-36 Steel

What is A-36 Steels? A-36 steel is a structural billet steel for structural applications. A-36 is a material grade and designation defined in ASTM A36/A36M-08 standard. ASTM A36/A36M-08 is an international material standard for billet steel for general structural usage. Fe-510 steel can be compared with this type of steel.

Dimensional Characteristics of A-36 Steels: The applicable thickness for this A-36 material as defined in the ASTM A36/A36M-08 starts from 10 mm to 60 mm.

The Chemical Composition of A-36 Steels: ASTM A36/A36M-08 defines the chemical composition of A-36 steels as under:

Maximum percentage of Carbon (C) is 0.290.

Maximum percentage of Manganese (Mn) is 0.90.

Maximum percentage of Phosphorous (P) is 0.040.

Maximum percentage of Sulphur (S) is 0.050.

Maximum percentage of Silicon (Si) is 0.350.

Remaining is iron (Fe) percentage and with few negligible impurities.

Mechanical Properties of A-36 Steels: The tensile strength of the A-36 Steels is expressed in Newton per millimeters and it must be at-least 400 N/mm2 (MPa) and maximum can be 550 N/mm2 (MPa). The yield strength is minimum 250 N/mm2 (MPa). The minimum percentage ranges for elongation is 23%.


Engineer Ali Alvi is an industrial engineer who has post graduated from the NED University, then completed his Masters in Industrial Engineering from the University of Ontario. He has also served as an engineer in International Steel Ltd as A Cold rolling mill engineer.

  1. ali says:

    What does the numbers 36,992,572 means in astm a36, a992,a572

    1. Andrew Michael says:

      These are simply different types of materials of American standards.

  2. ABBAS says:

    Can we use in of marine ports

    1. Adam Rudolf says:

      Not recommended for marine port.

  3. formn says:

    equivalent to S275?

    1. Engr. Syed Waqas says:

      ASTM A570 Steel, grade 40 is the equivalent for S275, A-36 steel cannot be termed as equivalent to s275 however it can be compared and checked with product development department.

  4. Madanna says:

    Required for structural purpose, can you tell us this grade is equivalent to which IS standard

  5. RAJANI KANTH says:

    What is the difference between ASTM A36 / ASTM A36M

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