Stainless Steel 304 density

Density is a fundamental physical property that describes the mass of a substance per unit volume. In scientific terms, it's calculated as the ratio of mass to volume, represented by the formula p = m/V, where p stands for density, m for mass, and V for volume.

Table of contents

  • Stainless steel 304 density
  • AISI 304 chemical composition
  • SS 304 mechanical properties
  • SUS304 physical properties
  • Stainless steel 304 equivalent
  • Heat Resistance of SS 304 material
  • AISI 304 Forging and Hot Working
  • Heat Treatment of SUS 304
  • AISI 304 material standard
  • Comparison of density of DIN 1.4301 with other materials
  • How to calculate the density of Alloy 304 grade
  • Weight calculation of INOX 304
  • Relations of Temperature And Pressure with Density
  • Mean Coefficient of Thermal Expansion of UNS S30400
  • Thermal Conductivity of 1.4301 stainless steel material

Stainless steel 304 density

Stainless Steel Density (lb/in³) Density (g/cm³) Density (kg/m³) Density (kg/dm³) Density (lb/ft³)
304 0.286 7.93 7,930 7.93 495.05

304 ss grade has a minimum of 8% nickel, Refer INOX 304 chemical composition

The chemical composition of 304 stainless steel includes several elements, with nickel making up about 8%. This composition gives the material excellent ductility, formability, weldability, and resistance to high temperatures, making it easy to work with in manufacturing processes.

Due to its versatility, 304 stainless steel is widely used in various industries, from construction to food processing, where durability and corrosion resistance are essential.

AISI 304 chemical composition

Chromium
20%
Nickel
10.5%
Carbon
0.08%
Manganese
2%
Silicon
1%
Phosphorous
0.045%
Sulphur
0.03%
Nitrogen
0.1%

SS 304 mechanical properties

Property Measurement
Tensile strength 505 MPa – 620 MPa
Yield strength ~ 215 MPa
Elongation 50% – 60%

AISI 304 material have very good formability, Check UNS S30400 physical properties

AISI 304 stainless steel is known for its excellent formability, which makes it ideal for bending, machining, and welding. Its flexibility allows for the creation of complex shapes, expanding its use across many industries such as automotive, aerospace, and architecture.

This property ensures that manufacturers can produce customized products without limitations, offering great adaptability for diverse applications.

SUS304 physical properties

Property Density, lb/in³ Modulus of Elasticity, psi Coefficient of Thermal Expansion, 68-212°F, /°F Thermal Conductivity, Btu/ft hr °F Specific Heat, Btu/lb °F Electrical Resistivity, Microohm-in
304 0.285 28 x 10⁶ 9.2 x 10⁻⁶ 9.4 0.12 28.3

Stainless steel 304 equivalent

Grade UNS Japanese JIS Old British Euronorm Swedish SS
BS En No Name
304 S30400 SUS 304 304S31 58E 1.4301 X5CrNi18-10 2332

Heat Resistance of SS 304 material

Intermittent service up to 870°C
Continuous service 925°C

AISI 304 Forging and Hot Working

Forging 925–1260 °C
Hot Working 1149–1260°C

Good corrosion resistance is exhibit by Alloy 304 grade, View Heat Treatment of 1.4301 stainless steel

AISI 304 stainless steel exhibits good corrosion resistance, making it ideal for environments where rust and oxidation are concerns. It is commonly used in kitchenware, marine equipment, and industrial components due to its ability to withstand harsh conditions over time.

Heat treatment methods vary depending on the application and desired properties, including annealing, hardening, and tempering, each affecting the material’s characteristics differently.

Heat Treatment of SUS 304

Heat Treatment 1149 – 1260°C

AISI 304 material standard

Product Standard
Plate ASTM A240 / ASME SA240
Flange / Forged Fittings ASTM A182 / ASME SA182
Pipe Fittings ASTM A403 / ASME SA403
Fasteners ASTM A194 / ASME SA194
ASTM Standard

Comparison of density of DIN 1.4301 with other materials

Types Of Steel Density, g/cm³ Density, lb/ft³ Density, kg/m³ Density, lb/in³
Stainless Steel 7.7-8.0 481-499 7,700-8,000 0.278-0.289
Mild Steel 7.85 490 7,850 0.284
Medium Carbon Steel 7.83 489 7,830 0.283
High Carbon Steel 7.81 488 7,810 0.282
Iron 7.87 491 7,870 0.284

How to calculate the density of Alloy 304 grade

To determine the density of AISI 304 stainless steel, you need to know the mass and volume of the material. The formula is:

Density = Mass / Volume

Weight calculation of INOX 304

Stainless steel 304 weigh formula

Tube / Pipe

Round shape: W = (OD - T) × T × 0.0031416 × Density

Square shape: W = (OD × 4 / 3.14 - T) × T × 0.0031416 × Density

Rectangular shape: W = ((OD1 + OD2) × 2 / 3.14 - T) × T × 0.0031416 × Density

Plate / Sheet

W = T × Width (m) × Density

Bar

Round Bar: W = 0.0007854 × O.D. (mm)² × Density

Flat Bar: W = 0.001 × Width (mm) × T (mm) × Density

Hexagon Bar: W = 0.000866 × I.D. (mm)² × Density

Square Bar: W = 0.001 × Width (mm)² × Density

Relations of Temperature And Pressure with Density

The density of AISI 304 stainless steel is affected by temperature and pressure. As temperature increases, density decreases, while an increase in pressure generally leads to an increase in density.

Annealing temperature of 304 stainless steel is between 1,100 and 1,150°C, Check Thermal Expansion of SUS 304 material

Annealing at 1,100–1,150°C improves the mechanical and corrosion resistance properties of 304 stainless steel. This process reduces internal stresses, lowers hardness, and enhances the material’s flexibility, making it easier to work with during manufacturing.

Thermal expansion is a key factor in engineering applications. The coefficient of thermal expansion measures how much a material expands when heated, which is crucial for design and performance considerations.

Mean Coefficient of Thermal Expansion of UNS S30400

0-100°C 0-315°C 0-538°C
17.2 μm/m/°C 18.4 μm/m/°C 16.2 μm/m/°C
Chromium prevents rust and corrosion in SS 304 material, View Thermal Conductivity of DIN 1.4301

The presence of chromium in 304 stainless steel provides excellent resistance to rust and corrosion. Chromium reacts with oxygen in the air to form a protective layer, preventing oxidation and ensuring long-term durability.

Higher chromium content typically results in better corrosion resistance, making 304 stainless steel a preferred choice in applications where appearance and maintenance are important.

Thermal Conductivity of 1.4301 stainless steel material

at 100°C at 500°C
16.2 W/m·K 21.5 W/m·K

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