Stainless Steel 304 Bars – Composition Properties and Uses
Stainless steel 304 bars are one of the most popular types of stainless steel bars. These bars are widely used in various industries for their excellent properties, including corrosion resistance, durability, and high strength. This post will delve deep into the composition, physical properties, mechanical properties, uses of heat treatment, and corrosion resistance of SS 304 Bar.
What are Stainless Steel 304 Bars?
SS 304 Round Bars are an alloy of Iron, Chromium, Nickel, and Manganese. They are highly corrosion resistant with excellent tensile strength and a wide range of uses, including the production of food processing equipment, kitchen sinks, medical instruments, chemical tanks and industrial parts. It is also used in underwater fasteners for boats.
Stainless Steel 304 Bars Composition
AMS 5639 bars are composed of 18% chromium and 8% nickel. Their composition also includes carbon, manganese, silicon, and phosphorus. The composition of these UNS S30400 Bar is critical because it determines their characteristics, including their corrosion resistance, heat resistance, and durability.
|
% |
304 |
304L |
304H |
|
C |
0.0 – 0.07 |
0.0 – 0.03 |
0.04 – 0.08 |
|
Mn |
0.0 – 2.0 |
0.0 – 2.00 |
0.0 – 2.0 |
|
Si |
0.0 – 1.00 |
0.0 – 1.00 |
0.0 – 1.0 |
|
P |
0.0 – 0.05 |
0.0 – 0.05 |
0.0 – 0.04 |
|
S |
0.0 – 0.03 |
0.0 – 0.02 |
0.0 – 0.02 |
|
Cr |
17.50 – 19.50 |
17.50 – 19.50 |
17.00 – 19.00 |
|
Ni |
8.00 – 10.50 |
8.00 – 10.50 |
8.00 – 11.00 |
|
Fe |
Balance |
Balance |
Balance |
| N | 0.0-0.11 | 0.0-0.11 | 0.0 – 0.10 |
Stainless Steel 304 Bars Physical properties
304 SS bars have excellent physical properties. They have a density of 8.03 g/cm³, a melting point of 1400-1450°C, and a boiling point of 2470°C. The bars are non-magnetic and have a specific heat capacity of 500 J/kg·K. Additionally, they have good thermal conductivity and electrical conductivity.
|
Property |
Value |
|
Density |
8.00 g/cm3 |
|
Melting Point |
1450 °C |
|
Modulus of Elasticity |
193 GPa |
|
Electrical Resistivity |
0.72 x 10-6 Ω.m |
|
Thermal Conductivity |
16.2 W/m.K |
|
Thermal Expansion |
17.2 x 10-6/K |
Stainless Steel 304 Bars Mechanical properties
304 Stainless steel bars have exceptional mechanical properties, including high tensile strength, yield strength, and hardness. The bars have a tensile strength of up to 620 MPa and a yield strength of up to 310 MPa. The SS 304 Hex Bar are also highly malleable and easily formed, shaped, or welded.
|
Grade |
304 |
304L |
304H |
|
Tensile Strength (MPa) |
500 – 700 |
500 – 700 |
500 – 700 |
|
Proof Stress (MPa) |
190 |
175 Min |
185 Min |
|
Elongation A50 mm |
45 Min % |
45 Min % |
40 Min % |
|
Hardness Brinell |
215 Max HB |
215 Max HB |
– |
Stainless Steel 304 Bars Uses
1.4301 AISI 304 Cold Rolled Bars have a wide range of uses due to their excellent properties. They are commonly used in manufacturing chemical equipment, food processing equipment, and the construction industry. They are also used to produce kitchenware, automotive parts, and textile and paper machines.
Stainless Steel 304 Bars Heat treatment
SUS 304 stainless steel Bar can be heat treated to improve their mechanical and physical properties. The heat treatment involves heating the bars to a high temperature and then cooling them at a controlled rate. This process can improve the bars’ hardness, toughness, flexibility, and strength.
Stainless Steel 304 Bars Corrosion resistance
SS304 bars have excellent corrosion resistance. They resist pitting, crevice corrosion, and stress corrosion cracking in chloride environments. Additionally, they are resistant to strong acids and bases, making them ideal for use in the chemical industry.
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Conclusion:
UNS S30400 Bar are an excellent choice for various industries due to their exceptional properties, including high strength, durability, and corrosion resistance. Their composition, physical properties, mechanical properties, uses, heat treatment, and corrosion resistance are critical factors that make them suitable for various applications. If you want high-quality stainless steel 304 bars, choose a reputable supplier for the best quality products.
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