JIS G4305 SUS329J4L, an outstanding member of the austenitic-ferritic duplex stainless steel family, is a premium material developed to meet the stringent demands of various industries. Manufactured by TJC Steel Group, this cold-rolled stainless steel plate boasts exceptional corrosion resistance, mechanical properties, and versatility in applications. This comprehensive product introduction delves into its chemical composition, mechanical characteristics, heat treatment status, available dimensions, low-temperature impact testing results, primary applications, and notable supply cases from TJC Steel Group.

Chemical Composition

The SUS329J4L cold-rolled stainless steel plate adheres strictly to the chemical composition standards outlined in JIS G4305. Its precise alloy blend ensures optimal performance across various environments. The key elements and their ranges are as follows:

· Carbon (C): ≤ 0.03%

· Silicon (Si): ≤ 0.90%

· Manganese (Mn): ≤ 1.00%

· Phosphorus (P): ≤ 0.040%

· Sulfur (S): ≤ 0.015%

· Chromium (Cr): 24.00% - 26.00%

· Molybdenum (Mo): 3.00% - 3.50%

· Nickel (Ni): 5.50% - 7.20%

· Nitrogen (N): 0.08% - 0.20%

· Tungsten (W): 0.05% - 0.30%

This balanced chemistry contributes significantly to the steel's corrosion resistance, particularly in chloride-containing environments.

Mechanical Properties

SUS329J4L cold-rolled stainless steel plate exhibits exceptional mechanical properties, making it suitable for demanding applications. In its solution-annealed condition, the key mechanical properties include:

· Tensile Strength (σb): ≥ 620 MPa

· Yield Strength (σs): ≥ 450 MPa

· Elongation (%): ≥ 18%

· Hardness (HBW): ≤ 302

These properties ensure high strength and ductility, enabling the material to withstand both tensile and compressive loads without failure.

Heat Treatment Status

SUS329J4L cold-rolled stainless steel plate is typically supplied in the solution-annealed condition, ensuring uniform microstructure and optimal corrosion resistance. This heat treatment involves heating the material to a temperature above its critical point, holding it for a sufficient time to allow for complete phase transformation, and then rapidly cooling it to room temperature. This process eliminates internal stresses and enhances the material's overall performance.

Available Dimensions

TJC Steel Group offers SUS329J4L cold-rolled stainless steel plates in a wide range of thicknesses, widths, and lengths to meet specific customer requirements. Typical thickness ranges from a few millimeters to several centimeters, while widths and lengths can be customized to suit individual project needs. The company's state-of-the-art facilities enable precise cutting and finishing, ensuring dimensional accuracy and surface quality.

Low-Temperature Impact Testing

SUS329J4L demonstrates exceptional toughness even at low temperatures, making it suitable for applications in cold environments. Low-temperature impact tests have confirmed its ability to withstand sudden temperature drops without experiencing significant embrittlement or loss of strength. This characteristic ensures reliable performance in extreme conditions, such as those encountered in Arctic regions or cryogenic processing facilities.

Primary Applications

The exceptional properties of SUS329J4L cold-rolled stainless steel plate make it an ideal choice for various demanding applications. Key sectors include:

· Marine Engineering: Used in the construction of ships, submarines, and offshore structures, where its corrosion resistance in seawater is crucial.

· Chemical Processing: Suitable for equipment exposed to harsh chemicals, such as reaction vessels, piping, and storage tanks.

· Petroleum Industry: Utilized in oil and gas exploration, production, and refining equipment, where both strength and corrosion resistance are essential.

· Desalination Plants: A preferred material for components in seawater desalination systems due to its ability to withstand the corrosive effects of brine.

TJC Steel Group Supply Cases

TJC Steel Group has a proven track record of supplying high-quality SUS329J4L cold-rolled stainless steel plates to various prestigious projects worldwide.