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Density of stainless steel

The density of stainless steel can vary depending on the specific alloy composition. On average, the density ranges from about 7.70 to 8.05 grams per cubic centimeter (g/cm³) or approximately 0.278 to 0.291 pounds per cubic inch (lb/in³).

304 NO.4 stainless steel sheets
430 stainless steel sheet


1.The density of common stainless steel

Stainless Steel GradeDensity (g/cm³)Density (lb/in³)
17-4 PH7.750.280
2205 Duplex7.8050.282

2.How to calculate the weight of stainless steel plate?

The formula for calculating the weight of the stainless steel plate (to be precise, the formula for calculating the theoretical weight of the steel plate) uses the marked thickness of the steel plate as the imported data for calculation.

After the unit is unified, according to the density of stainless steel,the simple calculation method for the weight of the stainless steel plate is abstracted:

After the unit is unified, the simple calculation method for the weight of the stainless steel plate is abstracted:

Weight (kg) = Length (m) × Width (m) × Thickness (mm) × Density (g/cm³) × 0.001


  • Length is the length of the stainless steel plate in meters.
  • Width is the width of the stainless steel plate in meters.
  • Thickness is the thickness of the stainless steel plate in millimeters.
  • Density is the density of the specific grade of stainless steel in g/cm³.

The factor of 0.001 is used to convert the density from g/cm³ to kg/cm³.

This formula gives you the weight of the stainless steel plate in kilograms. Keep in mind that this is a simplified method and doesn’t account for any cutouts, holes, or other variations in the plate.

How much does the 1.5X3m stainless steel plate weigh?

To calculate the weight of a stainless steel plate with the given specifications (grade 304, thickness 5mm, dimensions 1.5m x 3m), you’ll need to know the density of grade 304 stainless steel. The density of 304 stainless steel is typically around 8,000 kg/m³.

Using the formula: Weight = Volume × Density

Volume = Length × Width × Thickness Density = 8000 kg/m³

Given dimensions: Length = 1.5 m Width = 3 m Thickness = 5 mm (which needs to be converted to meters)

Converting thickness to meters: Thickness = 5 mm / 1000 = 0.005 m

Now, calculate the volume: Volume = 1.5 m × 3 m × 0.005 m = 0.0225 m³

Finally, calculate the weight: Weight = 0.0225 m³ × 8000 kg/m³ = 180 kg

So, the approximate weight of the 1.5m x 3m stainless steel plate with a thickness of 5mm (grade 304) is 180 kilograms. Keep in mind that this is an approximation and may vary slightly due to tolerances and other factors.

3.Does the density of stainless steel vary depending on its grade or composition, and if so, what factors contribute to these differences?

The density of stainless steel can vary depending on its grade or composition. The density of stainless steel is influenced by the specific alloying elements and their proportions in the steel. Different grades of stainless steel have varying amounts of elements like iron, chromium, nickel, molybdenum, and others, which can impact the overall density.

For example:

Austenitic stainless steels (e.g., 304, 316) typically have a lower density due to their higher nickel content, which contributes to a more expanded atomic structure.
Ferritic stainless steels (e.g., 430) have a higher density compared to austenitic grades because they contain less nickel and have a more tightly packed atomic structure.
Duplex stainless steels (e.g., 2205, 2507) have intermediate densities due to their mixed austenitic-ferritic microstructure.
The density of stainless steel can also be affected by the presence of additional elements used for specific properties like strengthening, corrosion resistance, or heat resistance. Additionally, variations in the manufacturing process and impurities can also influence the density of stainless steel.

In general, stainless steel densities typically range from about 7,700 kg/m³ to 8,050 kg/m³. It’s important to note that these density values are approximate and can vary depending on specific grades and production processes.

4.Can you explain how the density of stainless steel affects its buoyancy and behavior in submerged or marine environments, such as in marine vessels or offshore structures?

The density of stainless steel plays a significant role in its behavior in submerged or marine environments, particularly in marine vessels and offshore structures. Here’s how:

  1. Buoyancy: The density of stainless steel determines its buoyancy in a fluid. Stainless steel is denser than water, so it will sink in water. However, in practical applications such as marine vessels and offshore structures, the buoyancy of stainless steel is managed by ensuring that the overall structure displaces enough water to achieve positive buoyancy. This is done by incorporating air or other buoyant materials in the design.

  2. Corrosion Resistance: Stainless steel is highly corrosion-resistant, which is crucial in marine environments where exposure to saltwater and moisture is high. The passive oxide layer on stainless steel’s surface helps protect it from corrosion. The density of the steel does not directly impact its corrosion resistance, but the material’s ability to resist corrosion is vital for maintaining structural integrity in marine environments.

  3. Strength and Durability: The density of stainless steel affects its strength-to-weight ratio. While stainless steel is denser than some other materials used in marine construction, its high strength allows for robust structures with reduced material volume. The durability and long life of stainless steel in marine environments make it a preferred choice despite its density.

  4. Design Considerations: The density of stainless steel influences the weight of marine vessels and offshore structures. Designers and engineers need to balance structural integrity, buoyancy, and weight considerations when selecting stainless steel grades and determining the thickness of components. Proper design and construction ensure that the final structure is stable, safe, and capable of withstanding the conditions of the marine environment.

  5. Anti-Fouling Measures: In submerged applications, marine growth (biofouling) can accumulate on surfaces. Stainless steel’s smooth surface makes it less prone to fouling compared to some other materials. While the density of stainless steel is not directly related to fouling, its resistance to fouling can contribute to operational efficiency and reduced maintenance needs.

In summary, while the density of stainless steel affects its buoyancy and weight, the material’s corrosion resistance, strength, and durability are more significant factors in determining its performance and behavior in submerged or marine environments. Proper engineering and design practices account for these considerations to ensure the successful use of stainless steel in marine applications.

5.How does the density of stainless steel influence its weight and volume characteristics in different applications, such as structural components or kitchenware?

The density of stainless steel has a direct impact on its weight and volume characteristics in various applications. Here’s how it affects stainless steel’s behavior in different contexts:

  1. Structural Components:

    • Weight: In structural applications like buildings, bridges, and machinery, the density of stainless steel affects the weight of the components. Higher-density stainless steel will contribute to higher overall weights of structures. However, stainless steel’s high strength-to-weight ratio allows for the design of lighter and more efficient structures compared to some other materials.
    • Volume: The density also affects the volume of material needed for a given application. Higher-density stainless steel may require less volume to achieve the desired strength, allowing for more compact designs.
  2. Kitchenware:

    • Weight: In kitchenware applications such as pots, pans, and utensils, the density of stainless steel affects the weight of the items. Lower-density stainless steel would result in lighter kitchenware, which can be more comfortable for handling and cooking.
    • Volume: The density also influences the thickness and overall volume of the stainless steel used in kitchenware. A lower-density stainless steel might require more material to achieve the desired durability, affecting the thickness and appearance of the products.
  3. Aerospace and Automotive Industries:

    • Weight: In aerospace and automotive applications, the density of stainless steel is crucial due to the need for lightweight materials to improve fuel efficiency and performance. Lower-density stainless steel alloys are preferred in these industries to reduce overall weight while maintaining strength.
  4. Medical Devices:

    • Weight: For medical devices, the density of stainless steel impacts the weight of instruments and implants. In applications where weight is a concern, stainless steel with a lower density may be chosen to minimize the load on patients or medical professionals.
  5. Consumer Electronics:

    • Weight: In consumer electronics, such as smartphones and laptops, stainless steel components need to be lightweight. Lower-density stainless steel grades are often used to achieve the desired balance between strength and weight.
  6. Decorative Applications:

    • Weight and Volume: In decorative applications like sculptures and architectural features, the density of stainless steel affects both the weight and volume of the final product. Lower-density stainless steel can be more manageable to work with and transport while maintaining the desired aesthetic qualities.

In all these applications, engineers and designers must carefully balance the density of stainless steel with other factors like strength, corrosion resistance, cost, and functional requirements. The choice of specific stainless steel grades, thicknesses, and manufacturing processes is guided by these considerations to ensure optimal performance and efficiency in various contexts.

6.What are the factors to consider when selecting stainless steel sheets suppliers?

304 NO.4 stainless steel sheets

When selecting stainless steel sheet suppliers, several factors should be carefully considered to ensure you’re getting high-quality products that meet your specific needs. Here are some important factors to take into account:

  1. Quality and Certification:

    • Ensure that the supplier offers stainless steel sheets that adhere to recognized industry standards such as ASTM, EN, or JIS.
    • Look for suppliers that provide certifications or test reports for their products, including material composition, mechanical properties, and corrosion resistance.
  2. Material Variety and Grades:

    • Choose a supplier that offers a wide range of stainless steel grades, finishes, and thicknesses to match your project requirements.
  3. Reputation and Reliability:

    • Research the supplier’s reputation in the industry. Look for reviews, testimonials, and references from other customers.
    • Consider suppliers with a proven track record of reliability and on-time delivery.
  4. Experience and Expertise:

    • Opt for suppliers with significant experience in the stainless steel industry. Experienced suppliers are more likely to understand your needs and provide accurate guidance.
  5. Customization Capability:

    • If your project requires specific sizes, finishes, or other customizations, choose a supplier that can accommodate your requirements.
  6. Technical Support:

    • Look for suppliers that offer technical support and assistance. A knowledgeable sales team can help you choose the right materials for your application.
  7. Price and Value:

    • While price is important, consider the overall value you’re getting. High-quality materials and reliable service may justify a slightly higher cost.
  8. Inventory and Availability:

    • Ensure that the supplier has a stable inventory and can consistently provide the quantities you need.
  9. Location and Shipping:

    • Consider the supplier’s location and shipping capabilities. A closer supplier may reduce shipping costs and lead times.
  10. Environmental Responsibility:

    • If sustainability is important to your organization, inquire about the supplier’s environmental practices and certifications.
  11. Customer Service:

    • Choose a supplier that is responsive and provides excellent customer service. Clear communication and prompt responses are essential.
  12. Flexibility and Scalability:

    • If your project’s demands change, a flexible supplier can accommodate adjustments in quantities or specifications.
  13. Warranties and Return Policies:

    • Understand the supplier’s warranty and return policies in case you receive defective or incorrect materials.
  14. Long-Term Relationship:

    • Consider suppliers with whom you can build a long-term relationship. Consistency in product quality and service is crucial for ongoing projects.
  15. Global Sourcing and Supply Chain:

    • If you have global operations, a supplier with international capabilities can help streamline your supply chain.

By carefully evaluating these factors and conducting thorough research, you can choose a stainless steel sheet supplier that aligns with your project’s requirements and provides you with the best possible products and service.

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