JIS G3116 Gas cylinder Hot Rolled SG295 Steel

What is SG295 Steels? SG295 steel is a structural hot Rolled steel in the form of plates, sheets & strips for general gas cylinder applications. SG295 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. SG295 has greater elastic region & tensile strength as compare to SG255 steel.

Dimensional Characteristics of SG295 Steels: The applicable thickness for this SG295 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 SG295 Steels: JIS G 3116 defines the chemical composition of SG295 steels as under:

Maximum percentage of Carbon (C) is 0.20.

Maximum percentage of Silicon (Mn) is 0.35.

Maximum percentage of Manganese (Mn) is 1.0.

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 SG295 Steels: The tensile strength of the SG295 Steels is expressed in Newton per millimeters and it must be at-least 440 N/mm2 (MPa). The yield strength is minimum 295 N/mm2 (MPa). The minimum percentage ranges for elongation is 26%.

SG295 steel comparison with this grade of SG255 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.

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