304 Stainless Steel Sheet

304 stainless steel is the most widely used austenitic stainless steel alloy. It is composed primarily of iron, with a significant amount of chromium (18-20%) and nickel (8-10.5%). It also contains small amounts of other elements, such as manganese, silicon, and carbon. Therefore, 304 stainless steel is also known as UNS S30400 or 18-8 stainless steel. Please get in touch with TOPSON to get the latest price of 304 stainless steel.

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304 stainless steel
304 stainless steel in stock

Parameters

The chemical composition of 304 stainless steel typically consists of chromium (18-20%), nickel (8-10.5%), and a small amount of carbon (0.08% max). It is renowned for its excellent corrosion resistance, high strength and ductility, great weldability, and remarkable formability and fabrication. Here are some critical parameters of TOPSON’s 304 stainless steel:

Name304 Stainless Steel
TypesCoils, Sheets / Plates, Pipes, Cable railing, etc
StandardASTM/ASME: UNS S30400 / S30403; EURONORM: 1.4301 / 1.4303; AFNOR: Z5 CN 18.09 / Z2 CN 18.10; DIN: X5 CrNi 18 10 / X2 CrNi 19 11
BrandBAOSTEEL, TISCO, ZPSS
Thickness0.5~3mm, pr as required
Width3~2500mm or as required
LengthCustomized
Surface2B, BA, Brushing, Etching, Colored, Embossing, etc.
TechniqueCold rolled
ProcessingWelding, Heat treatment, Hot forming, Cold forming, Cutting
Delivery7~25 days
MOQSheets: 2tons / Coils: 6tons
PackingWaterproof Paper, Stainless Steel Belt, Wooden Pallet, Customized
Export toRussia, Korea, Turkey, Saudi Arabia, Malaysia, Vietnam, India, Dubai, etc.

Container Size
20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC: 12032mm(Lengh)x2352mm(Width)x2698mm(High)
Price TermFOB, CNF, CIF

Properties of 304 Stainless Steel

304 stainless steel is divided into 304, 304L and 304H alloys, and their chemical compositions vary based on carbon content. 304L stainless steel has the lowest carbon content at 0.03%. 304H stainless steel has the highest carbon content, about 0.04-0.1%. Stainless steel 304 is the middle level, with a carbon content of 0.08%.

Generally, 304L is used for large welded parts that do not require post-weld annealing, and its low carbon percentage increases ductility. 304H is most commonly used at high temperatures, and its high carbon content helps maintain strength and stability when hot.

Chemical Composition (%)

304 Stainless Steel

Carbon (C):≤0.08, Manganese (Mn):≤2, Silicon (Si):≤0.75, Phosphorus (P):≤0.045, Sulfur (S):≤0.03, Chromium (Cr):18~20, Nickel (Ni):8~10.5

304L Stainless Steel

Carbon (C):≤0.03, Manganese (Mn):≤2.0, Silicon (S):≤0.75, Phosphorus (P):≤0.045, Sulfur (S):≤0.03, Chromium (Cr):17.5~19.5, Nickel (Ni):8.0~12.0, Nitrogen (N):≤0.10

304H Stainless Steel

Carbon (C): 0.04~0.10%, Manganese (Mn):≤2, Silicon (Si):≤0.75, Phosphorus (P):≤0.045, Sulfur (S):≤0.03, Chromium (Cr): 18~20%, Nickel (Ni): 8~10.5%

Mechanical Properties of 304 Stainless Steel

The mechanical properties of 304 stainless steel play a crucial role in determining its suitability for various applications. However, these mechanical properties can vary depending on factors such as the specific manufacturing process, heat treatment, and the thickness or form of the stainless steel.

Tensile strength: 515 MPa or 74,700 psi
Yield strength: 205 MPa or 29,700 psi
Modulus of elasticity: 193–200 GPa or 28,000–29,000
Density: 7,900 kg/m3 or 0.286 lb/cu in
Elongation: 45%
Thermal expansion: 17.2 x 10/K
Thermal conductivity: 16.2W/m.K
Electrical resistivity: 0.072 x 10 Ω .m
Hardness (Brinell): ≤201
Hardness (Rockwell B): ≤92

The tensile strength of 304 stainless steel is 515 MPa and its yield strength is 205 MPa. Tensile and yield strength measures a material’s elasticity in response to tensile (pulling) force. While not as strong as some other steels, the reduced strength allows 304 stainless steel to be easily shaped and manipulated.

The elastic modulus of 304 steel ranges from 193-200 GPa. Like most steels, 304 steel has a relatively high modulus of elasticity so that it won’t deform easily under pressure. However, a lower elastic modulus will make it easier to process, so 304 is usually made with a lower elastic modulus to facilitate processing.

Finally, 304 steel has a higher Charpy impact score, which means it is generally more ductile and will bend before breaking, absorbing some of the force of the impact. This value further proves that 304 steel is easy to process and operate and is not prone to fracture under pressure conditions.

Physical Properties of 304 Stainless Steel

Density
(lbm/in3)
Electrical Resistivity
(in x 10-6)
Thermal Conductivity
(BTU/h ft. °F)
Modulus of Elasticity
(psi x 106)
Coefficient of Thermal Expansion
(in/in)/ °F x 10-6
Specific Heat
(BTU/lb/°F)
Melting Range
(°F)
68°F0.28528.3280.12002500 to 2590
212°F9.49.4 at 32 – 212°F0.12002500 to 2590
752°F39.42500 to 2590
932°F12.42500 to 2590
1000°F10.2 at 32 – 1000°F2500 to 2590
1500°F10.4 at 32 – 1500°F2500 to 2590
1652°F49.62500 to 2590

Available Processing

We have high-tech equipment for processing stainless coils and sheets/plates with skilled workers.

1. Cut to length
2. Despoiling and slitting
3. Grinding and brushing
4. Film protection
5. Etching
6. Embossing
7. Patina
8. Mirror or other finish
9. Bending, spinning, and deep drawing

Foshan Topson Stainless Steel Co., Ltd

Common Applications

304 stainless steel is one of the most commonly used austenitic stainless steel grades. It is widely available, cost-effective, and versatile, making it a popular choice in various industries and applications. Some typical applications of 304 stainless steel include::

♦ Food processing: It can be used in food processing equipment, storage tanks, brewing equipment, and dairy equipment.
♦ Architectural: It is used in building facades, handrails, elevator panels, decorative trim, signage, and interior design elements.
♦ Kitchen appliances: benches, sinks, troughs, equipment, and appliances
♦ Chemical industry: It is used in chemical containers, storage tanks, piping systems, valves, heat exchangers, and reactors.
♦ Pharmaceutical industry: It is used in surgical instruments, dental tools, medical implants, diagnostic equipment, and pharmaceutical-grade containers.
♦ Automotive Industry: 304 stainless steel is used for exhaust systems, mufflers, trim, decorative parts, and structural components due to its corrosion resistance and aesthetic appeal.
♦ Aerospace industry: 304 stainless steel finds application in aircraft fittings, fasteners, exhaust systems, and structural components.
♦ Oil and gas industry: It is employed in pipelines, storage tanks, valves, and other equipment.
♦ HVAC and refrigeration: 304 stainless steel is used in ductwork, heat exchangers, evaporators, and other components due to its corrosion resistance and thermal properties.
♦ Industrial equipment: It is employed in pumps, valves, pressure vessels, process tanks, and machinery components, where corrosion resistance and strength are required.
♦ Woven or welded screens for mining, quarrying & water filtration
♦ Dyeing industry

People Also Ask

Foshan TOPSON Stainless Steel Co., Ltd. is a professional stainless steel factory with nearly 15 years of experience in stainless steel production. All our goods are dispatched directly from the TOPSON mill.

Our stainless steel sheets and coils have to go through TWO/THREE checks in the manufacturing process, including production, cutting sheets (If requested) and packing.

No, 304 stainless steel is not magnetic. 304 stainless steel is an iron-based alloy containing more than 18% chromium. Although it contains a small amount of iron, its alloy structure determines that it is not magnetic.

After deep drawing processing, 304 will have weak magnetism. At the same time, its magnetic properties can vary depending on factors such as the specific manufacturing process, the presence of impurities, and the amount of cold working. However, it may not exhibit strong magnetic attraction like ferromagnetic materials such as iron or nickel.

Yes, the 304 stainless steel has food grade. At Foshan Topson Stainless Steel Co., Ltd, our 304 stainless steel is divided into food grade and building material grade. But our main product is stainless steel for building materials.

The primary difference between food-grade 304 stainless steel and building materials-grade 304 stainless steel lies in the specific regulations, requirements, and intended applications for each grade. Food-grade stainless steel is designed and regulated for direct contact with food, ensuring safety and hygiene, while building materials-grade stainless steel is chosen for architectural purposes, focusing on durability, corrosion resistance, and aesthetics.

Food Grade 304 Stainless Steel

Food-grade 304 stainless steel is designed and manufactured to meet strict regulations for direct contact with food. It must comply with food safety standards set by regulatory authorities such as the U.S. Food and Drug Administration (FDA) or the European Food Safety Authority (EFSA). This type of stainless steel is suitable for use in food processing equipment, storage tanks, preparation surfaces, and other applications involving direct contact with food. Specific surface finishes like electropolishing may be applied to improve cleanability and reduce the risk of bacterial growth.

Building Materials Grade 304 Stainless Steel

Building materials-grade 304 stainless steel is a type of stainless steel that is commonly used in construction and architecture. It is known for its durability, corrosion resistance, and aesthetic appeal, which make it the perfect choice for various architectural components and structures.

Even though it may not be subject to the same strict regulations as food-grade stainless steel, it still retains the inherent properties of 304 stainless steel, such as corrosion resistance and longevity. Building materials-grade 304 stainless steel is ideal for architectural components such as facades, handrails, cladding, roofing, and decorative elements.

304 stainless steel and 316 stainless steel are popular grades of austenitic stainless steel, each with unique properties and applications. The choice between 304 and 316 stainless steel depends on the specific application, including environmental factors, mechanical properties, and budget constraints.

304 Stainless Steel

304 stainless steel offers good corrosion resistance in most environments. It is resistant to corrosion from atmospheric conditions, water, and many chemicals. It is easily welded and can be fabricated using standard methods.

304 stainless steel is generally more affordable than 316 stainless steel, making it a popular choice for various applications. You can see it in multiple industries, including architecture, food processing, kitchen equipment, appliances, and automotive parts.

316 Stainless Steel

316 stainless steel offers superior corrosion resistance compared to 304 stainless steel, particularly in environments with chlorides, acids, or other corrosive substances. It is highly resistant to pitting and crevice corrosion. So, it is the best choice for marine environments and coastal applications.

316 stainless steel has better high-temperature strength and oxidation resistance, making it suitable for elevated-temperature applications. Unlike 304 stainless steel, while 316 stainless steel can be welded, it may require additional precautions to maintain its corrosion resistance, such as using low-carbon filler metals.

In conclusion, if corrosion resistance in harsh environments or exposure to chlorides is a primary concern, 316 stainless steel is generally the preferred choice. However, if cost-effectiveness and general corrosion resistance in typical environments are the main factors, 304 stainless steel is a suitable option.

The density of 304 stainless steel is around 8.0 g/cm³ (grams per cubic centimetre) or 8000 kg/m³ (kilograms per cubic meter). It is important to note that this value may vary slightly depending on the stainless steel’s specific composition and manufacturing processes. However, 8.0 g/cm³ density is often used as a general approximation for 304 stainless steel.

While 304 stainless steel is known for its good corrosion resistance, it is not entirely immune to rusting. In most environments, 304 stainless steel exhibits excellent resistance to corrosion, particularly in atmospheric conditions and mild environments. The Cr will form a passive oxide layer on the surface that helps protect it from corrosion.

However, under certain conditions, 304 stainless steel can still rust. Factors that can contribute to the rusting of 304 stainless steel include:

(1) Exposure to Chlorides
(2) High-temperature Environments
(3) Contamination

Therefore, regular cleaning, avoiding exposure to chlorides, and promptly addressing any surface damage or contamination can help maintain the corrosion resistance of 304 stainless steel and reduce the chances of rust formation.

Other Grades of Stainless Steel

200 series stainless steel sheet

2205 Stainless Steel

Known as UNS S32205, the main characteristic of 2205 super stainless steel is high yield strength, double that of the standard austenitic stainless steel grades.

200 series stainless steel sheet

2507 Stainless Steel

Duplex 2507 stainless steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion.

200 series stainless steel sheet

316 Stainless Steel

316 stainless steel, also known as UNS S31600 or marine-grade stainless steel, has excellent corrosion resistance, high strength, and good mechanical properties.

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