JIS G3131 Deep Drawing Quality Hot Rolled SPHE Steels

What is SPHE Steels? SPHE steels are deep drawing quality hot rolled steels. SPHE steel is a material grade and designation defined in JIS G3131 standard. It also lies in the category of dead mild steel. For more related information examine SPHD & SPHC steels, since there is a slight difference of chemical composition between SPHE & SPHD & SPHC steels so as to ensure even better mechanical properties in SPHE steels than SPHC & SPHD steels.What is JIS G 3131? JIS G3131 is a Japanese material standard for hot rolled steel. The standard covers various hot roll material grades under its scope.

What is Deep Drawing Quality Hot Rolled Steel? The deep drawing quality hot rolled steel is a type of steel that can be used for deep drawing purposes.

Chemical Composition of SPHE Steels: SPHE 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 0.5 %.

Maximum range of Phosphorous & Sulphur is 0.03 & 0.035 %.

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

Dimensional Availability of SPHE Steels: Since SPHE steels is hot rolled steel, the available thicknesses are from 1.2 mm to 6 mm. The width of the material ranges from 1200 mm to 2000 mm.

Mechanical Properties of SPHE Steels: The tensile strength of SPHE 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 1.6 mm is 31 % minimum. The bend-ability of material is 180 degrees on itself.

Equivalent Material Grades in International Standards: The International Standard covering the scope of hot rolled mild steel ISO 3573-2008 has some related steels like HR 3 & HR 4 Steel as the equivalent material for  SPHE steel.

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