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JIS G3131 Drawing Quality Hot Rolled SPHD Steels

What is SPHD Steels? SPHD steels are drawing quality hot rolled steels. SPHD steel is a material grade and designation defined in JIS G3131 standard. It also lies in the category of dead mild steel. For more information see SPHC steels, since there is a slight difference of chemical composition between SPHC & SPHD steels that is for ensuring better mechanical properties in SPHD steels.

What is JIS G 3131? JIS G3131 is a Japanese material standard for hot rolled steel. The standard covers various hot rolled grades under its scope.

What is Drawing Quality Hot Rolled Steel? The drawing quality hot rolled steel is a type of steel that can be used for drawing objectives that can also covers drawing of a metallic sheet.

Chemical Composition of SPHD Steels: SPHD steels are composed of following chemicals with given proportion:

Carbon is less than or equal to 0.10%.

Manganese is less than or equal to 0.60 %.

Maximum range of Phosphorous & Sulphur is 0.05 %.

Rest percentage is of iron in the chemical composition of SPHD steels.

Dimensional Availability of SPHD Steels: Since SPHD steels is hot rolled steel, the available thicknesses are from 1.2 mm to 14 mm. The width of the material ranges from 1200 mm to 2000 mm.

Mechanical Properties of SPHD Steels: The tensile strength of SPHD grade is same as of SPHC steel grade i.e. at-least 270 N/mm2 (MPa). The elongation of this grade is different for different ranges of thicknesses. Looking at the lower tolerable elongation for the lower gauge of 1.2 to 1.5 mm is 30 % minimum. The bend-ability of material is 180 degrees on itself.

Equivalent Material Grades in Other Standards: Equivalent standards include the American standard and the international standard for this type of material.

Suppliers of SPHC steels can provide SPHD steels as well.


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. furrukh says:

    i wanna know what is a difference between sphc and sphd steel
    also known how can we identify 270 aur 440 grade materail

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