Introduction
304 stainless steel plate is a widely used austenitic stainless steel sheet. It is commonly used in construction, food processing equipment, chemical containers, kitchen equipment, and industrial applications.
| Tolerance | ±1% |
| Surface Finish | 2B, BA, HL, NO.1, NO.4, 8K etc. Can beCertificate |
| Standard | AISI ASTM DIN GB JIS SUS EN |
| Length | 1.0m-12m or as required |
| Width | 4.0cm-2.4m or as required |
| Thickness | 0.1mm-10.0mm, or as required |
| Application | foodstuff, chemical industry, construction, electric power, machinery, roofing, biotechnology, shipbuilding, boiler fields etc. |
Core Advantages of 304 Steel Plate
Superior Corrosion Resistance: The Cr-Ni alloy system enables it to resist most organic acids, inorganic salts, and industrial atmospheres. It remains rust-free in humid environments (e.g., coastal areas) and mild chemical scenarios (e.g., food processing), far outperforming carbon steel or low-alloy steel.
Excellent Mechanical Properties: Tensile strength ≥515MPa, yield strength ≥205MPa, elongation ≥40% - It has good ductility for bending, stamping, and welding, and can be processed into complex shapes without cracking. At low temperatures, it still maintains toughness, avoiding brittle fracture.
Hygienic & Non-Toxic: The 304 Steel Plate meets food-grade (FDA) and medical-grade standards, with a smooth surface that is easy to clean and does not release harmful substances. It is free from heavy metal precipitation, making it safe for direct contact with food, beverages, and pharmaceuticals.
Heat & Oxidation Resistance: It can operate stably at temperatures up to 800℃, with no obvious oxidation or strength loss. It is also resistant to thermal fatigue, suitable for high-temperature applications.
Manufacturing Process
The production process of 304 stainless steel requires strict control of the component ratio and heat treatment procedures to ensure that the performance meets the standards. Taking 304 stainless steel sheet as an example, the complete process is as follows：
Raw material ratio and melting - Casting billet formation - Hot rolling (thick plate) - Cold rolling (thin plate) - Annealing and solution treatment - Finishing and further processing - Quality inspection
304 Material Core: Precise Chemical Composition
304 stainless steel plate is austenitic stainless steel with strictly controlled chemical elements, complying with ASTM A240 and GB/T 4237 standards. Its key chemical composition (mass fraction) is:
Chromium (Cr): 18.00%-20.00% - The core element for corrosion resistance, forming a dense chromium oxide film on the surface to isolate oxygen and prevent rust.
Nickel (Ni): 8.00%-11.00% - Enhances austenite stability, improves ductility and toughness, and ensures the plate maintains excellent performance at low temperatures (-196℃ to 800℃).
Carbon (C): ≤0.08% - Low carbon content reduces intergranular corrosion risk, making the plate suitable for welding and high-temperature applications.
Manganese (Mn): ≤2.00% - Assists in deoxidation during smelting, improving the plate's processing performance without affecting corrosion resistance.
Silicon (Si): ≤1.00% - Enhances high-temperature strength and oxidation resistance, ensuring stability in high-heat scenarios.
Phosphorus (P): ≤0.045%, Sulfur (S): ≤0.030% - Strictly controlled impurity elements to avoid reducing the plate's toughness and corrosion resistance.
This precise composition gives 304 steel plate a balance of corrosion resistance, strength, and processability, making it the most widely used stainless steel grade globally.
Dimensional Range & Tolerances
304 stainless steel sheet
| Type | Thickness | Width | Length | Tolerance |
| cold rolled plate | 0.3~3.0mm | 1000/1219/1500mm | 2000/2438/3000mm | Thickness : ±0.02 to ±0.15 mm; Length and width : ±1 to ±3 mm |
| hot rolled plate | 3.0~100mm | 1500/1800/2000mm | 6000~12000mm | Thickness : ±0.1 to ±1.5 mm; Length and width : ±2 to ±5 mm |
Packing and Delivery
FAQs
1. Is 304 stainless steel plate magnetic?
304 stainless steel is generally non-magnetic in its annealed state, but slight magnetism may appear after cold working or forming processes.
2.Can 304 stainless steel plates be used in humid or coastal environments?
304 stainless steel performs well in humid conditions, but in highly saline coastal environments, higher-grade stainless steel may sometimes be recommended for better corrosion resistance.
3.How should 304 stainless steel plates be maintained?
They can be cleaned with mild detergents and soft cloths to maintain surface quality and prevent contamination.
They can be cleaned with mild detergents and soft cloths to maintain surface quality and prevent contamination.
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