JIS G3116 Gas cylinder Hot Rolled SG365 Steel

What is SG365 Steels? SG365 steel is a structural hot Rolled steel in the form of plates, sheets & strips for general gas cylinder applications. SG365 is a material grade and designation defined in JIS G 3116 standard. JIS G 3116 is a Japanese material standard for hot Rolled steel plates, sheets, strips for general gas cylinder usage. SG365 has greater elastic region & tensile strength as compare to SG325 steel.

Dimensional Characteristics of SG365 Steels: The applicable thickness for this SG365 material as defined in the JIS 3116 starts from 1.5 mm to 20 mm. The width is normally from 1000 mm to 2500 mm.

The Chemical Composition of SG365 Steels: JIS G 3116 defines the chemical composition of SG365 steels as under:

Maximum percentage of Carbon (C) is 0.20.

Maximum percentage of Silicon (Si) is 0.55.

Maximum percentage of Manganese (Mn) is 1.5.

Maximum percentage of Phosphorous (P) is 0.040.

Maximum percentage of Sulphur (S) is 0.040.

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

Mechanical Properties of SG365 Steels: The tensile strength of the SG365 Steels is expressed in Newton per millimeters and it must be at-least 540 N/mm2 (MPa). The yield strength is minimum 365 N/mm2 (MPa). The minimum percentage ranges for elongation is 20%.

SG365 steel comparison with this grade of SG325 material will show how it differs with lower strength steel in chemical composition & mechanical properties. Application of this kind of steel is in making gas cylinders.