Fe-360D steel is a structural billet steel for structural applications. Fe-360D is a material grade and designation defined in ISO 630 standard. ISO 630 is an international material standard for billet steel for general structural usage. Fe-360D Steel is similar to Fe-360C steel except minor tolerances in chemical composition.
Fe-360D steel Dimensional Characteristics: The applicable thickness for this Fe-360D material as defined in the ISO 630 starts from 10 mm to 200 mm.
Fe-360D steel Chemical Composition: ISO 630 defines the chemical composition of Fe-360D steels as under:
Maximum percentage of Carbon (C) is 0.17.
Maximum percentage of Manganese (Mn) is 1.4.
Maximum percentage of Phosphorous (P) is 0.035.
Maximum percentage of Sulphur (S) is 0.035.
Maximum percentage of Silicon (Si) is 0.40.
Remaining is iron (Fe) percentage and with few negligible impurities.
Fe-360D steel Mechanical Properties: The tensile strength of the Fe-360D Steels is expressed in Newton per millimeters and it must be at-least 340 N/mm2 (MPa) and maximum can be 470 N/mm2 (MPa). The yield strength is minimum 235 N/mm2 (MPa) for less than 16 mm, 225 N/mm2 (MPa) for 16 mm to 40 mm, 215 N/mm2 (MPa) for 40mm to 60mm and 185 N/mm2 for 150mm to 200mm. The minimum percentage ranges for elongation is 21% thicknesses.
Billets are also used for manufacturing of hot rolled steel. SPHC steel is a most common example of hot rolled steel.
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