The JIS G4305 SUS304J1 is a specification for cold-rolled stainless steel sheets that are widely used in various industries due to their excellent corrosion resistance and formability. This material is particularly favored for applications requiring a balance of strength and ductility at room and elevated temperatures.

Chemical Composition:

The chemical composition of SUS304J1 is strictly controlled to ensure its properties. It typically contains the following elements in the specified ranges (in weight percent):

· Carbon (C): ≤ 0.15%

· Silicon (Si): ≤ 1.00%

· Manganese (Mn): ≤ 2.00%

· Phosphorus (P): ≤ 0.045%

· Sulfur (S): ≤ 0.030%

· Nickel (Ni): 3.00% - 5.00%

· Chromium (Cr): 16.00% - 18.00%

· Nitrogen (N): ≤ 0.10%

· Iron (Fe): Remainder

Mechanical Properties:

The mechanical properties of SUS304J1 are as follows:

· Tensile Strength: ≥ 520 MPa

· Yield Strength (0.2% offset): ≥ 205 MPa

· Elongation (in 50mm): ≥ 40%

· Hardness: ≤ 95 HRB

Heat Treatment Conditions:

SUS304J1 is typically supplied in the annealed condition, which provides the best balance of mechanical properties and ease of fabrication. The annealing temperature is usually between 1010°C and 1120°C, followed by rapid cooling.

Available Dimensions:

TJC Steel Group offers SUS304J1 cold-rolled stainless steel sheets in a wide range of sizes to meet various customer requirements. The typical thickness range is from 0.3mm to 3.0mm, with widths up to 1500mm, and lengths up to 6000mm.

Low-Temperature Impact Test:

SUS304J1 is suitable for use in low-temperature applications, with a minimum impact value of 45J/cm² at -196°C (77K).

Main Applications:

Due to its excellent corrosion resistance and moderate strength, SUS304J1 is commonly used in the following applications:

· Architectural components

· Kitchen equipment

· Chemical processing equipment

· Medical instruments

· Food processing equipment

· Automotive parts

TJC Steel Group Supply Cases:

TJC Steel Group has successfully supplied SUS304J1 cold-rolled stainless steel sheets to various industries. One notable case involved the supply of SUS304J1 sheets for the construction of a chemical processing plant. The material's corrosion resistance and strength were critical for the plant's operation. Another case saw TJC providing SUS304J1 sheets for the manufacturing of surgical instruments, where the material's biocompatibility and ease of sterilization were paramount.

In conclusion, JIS G4305 SUS304J1 is a versatile cold-rolled stainless steel sheet that offers a combination of corrosion resistance, strength, and formability. TJC Steel Group's extensive experience in supplying this material ensures that customers receive high-quality products tailored to their specific needs.