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Product name : JIS G4304 SUS304J1 Hot-Rolled Stainless Steel Plates and Coils
Item : 20247179856
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  Details:
 In the vast array of stainless steel materials, the SUS304J1 grade, governed by the JIS G4304 standard, stands out for its exceptional chemical composition, mechanical properties, and wide range of applications. This article delves into the details of this high-performance stainless steel, including its chemical composition, mechanical properties, heat treatment status, dimensional specifications, impact testing, key application scenarios, and supply cases by TJC Steel Group.

Chemical Composition

The SUS304J1 stainless steel is an austenitic steel characterized by its balanced alloy composition. Its primary constituents include chromium (Cr) at 18-20%, nickel (Ni) at 8-10%, and a small amount of molybdenum (Mo) ranging from 0.5-1.0%. These elements, combined with the iron (Fe) base, carbon (C), silicon (Si), manganese (Mn), phosphorus (P), and sulfur (S), contribute significantly to the steel's corrosion resistance, ductility, and mechanical strength.

Mechanical Properties

The SUS304J1 grade exhibits excellent mechanical properties, with a minimum yield strength of 537 MPa and a minimum tensile strength of 777 MPa. Its ductility is evidenced by the minimum elongation rate of 24% and the minimum reduction of area at fracture of 22%. These properties ensure the steel's ability to withstand high stress and maintain its structural integrity.

Heat Treatment Status

SUS304J1 stainless steel is typically supplied in a solution and aging, annealing, or ausaging heat treatment state, which optimizes its corrosion resistance and mechanical properties. The heat treatment temperature range is typically between 1473°C and 1561°C.

Dimensional Specifications

JIS G4304 standard specifies the dimensional tolerances and shapes for SUS304J1 hot-rolled stainless steel plates and coils. The range of thicknesses, widths, and lengths varies depending on the specific application and customer requirements.

Impact Testing

SUS304J1 stainless steel undergoes rigorous impact testing to ensure its suitability for demanding applications. The standard specifies the minimum impact energy that the steel must absorb at specific temperatures, demonstrating its toughness and ability to withstand sudden impacts.

Key Application Scenarios

The SUS304J1 stainless steel finds extensive use in various industries due to its superior corrosion resistance and mechanical properties. In the chemical industry, it is used to store and transport corrosive substances. In the food processing industry, its non-toxic and corrosion-resistant properties ensure food safety. In the architectural sector, SUS304J1 stainless steel is ideal for cladding, roofing, and other exterior applications due to its durability and aesthetic appeal.

TJC Steel Group Supply Cases

As a leading supplier of stainless steel products, TJC Steel Group has a rich portfolio of SUS304J1 hot-rolled stainless steel plates and coils. We have successfully supplied this material to numerous projects across industries, including chemical plants, food processing facilities, and high-end architectural projects. Our strict quality control processes and commitment to customer satisfaction ensure that each shipment meets the highest standards of quality and performance.

In conclusion, the SUS304J1 stainless steel grade, governed by the JIS G4304 standard, offers exceptional corrosion resistance, mechanical properties, and versatility. Its wide range of applications and supply availability from TJC Steel Group make it a reliable choice for demanding industrial applications.


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