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JIS G3302 Structural Galvanized Cold Rolled SGC570 Steel

What is SGC570 Steels? SGC570 steel is ultra-high tensile structural hot dip galvanized cold rolled steel in the form of plates, sheets & strips for structural usages. SGC570 is a material grade and designation explicated in JIS G3302 standard. JIS G3302 is a Japanese material standard for Galvanized steel plates, sheets, strips for structural, commercial and drawing usage.

Dimensional Characteristics of SGC570 Steels: The applicable thickness for this SGC570 material as defined in the JIS G3302 starts from 1.6 mm to 3.2 mm. However the width of SGC570 material ranges to 950 to 2000 mm.

The Chemical Composition of SGC570 Steels: JIS G 3302 defines the chemical composition of SGC570 steels as under:

Carbon (C) is maximum 0.30 percent in the standard.

Manganese (Mn) is maximum 2.5 percent in the standard.

Maximum percentage of Phosphorous (P) is 0.20 percent.

Maximum percentage of Sulphur (S) is 0.050 percent.

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

Mechanical Properties of SGC570 Steels: The tensile strength of the SGC570 Steels is expressed in Newton per millimeters and it must be at-least 570 N/mm2 (MPa). The yield strength is minimum 510 N/mm2 (MPa). The elongation property of SGC570 is not desirable at any level.

SGC490 steel is another structural quality material with lower tensile strength than SGC570 defined in JIS G3302; this material can be compared with its mechanical properties & chemical composition by SGC570 steel. SAPH440 Steel is a hot rolled structural quality steel & can be used as a reference for comparison.

About

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. IMRAN says:

    hi. can you explain to me the difference between SGCC and SGCH. is it in the method of production?

    1. Andrew Michael says:

      Mr. Imran,

      Thank-you for your question. SGCC is commercial quality soft & SGCH is commercial quality hard. Difference is in- between is in the method of production as well as mechanical properties.
      Read this article it will help you understanding the difference in production: https://www.materialgrades.com/commercial-quality-mild-steel-grades-relationship-matrix-396.html

      SGCC steels are relatively soft than SGCH steel. The softness is due to higher annealing temperature during production of SGCC steel.

  2. Monir Hossain says:

    DEAR
    MY QUESTION. What is the difference between SPCD AND SGCC? And what is the need for drawing in it? And what is soft?

  3. Missy Morrill says:

    Is there an American equivalent standard that meets the JIS G3302 SGCC standards for galvanized cold rolled steel?

    1. Sarim Khan says:

      Yes, American equivalent is ASTM A 653, Grade CSB.

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