An In-depth Examination of 904L Stainless Steel: Properties and Applications

The primary elements in 904L stainless steel are:

Chromium (Cr): 19.0% – 23.0%

Nickel (Ni): 23.0% – 28.0%

Copper (Cu): 1.0% – 2.0%

Molybdenum (Mo): 4.0% – 5.0%

Iron (Fe): Balance

Carbon (C): ≤0.02%

Manganese (Mn): ≤2.0%

Silicon (Si): ≤1.0%

Phosphorus (P): ≤0.045%

Sulfur (S): ≤0.035%

Boron (B): 0.005% – 0.05%

The high content of chromium and nickel gives 904L stainless steel its excellent corrosion resistance. The addition of molybdenum and copper further enhances its corrosion resistance in strong acid environments.

904L Mechanical Properties

The mechanical properties of 904L stainless steel depend on its composition and heat treatment. In its untreated state, 904L stainless steel has lower strength but higher plasticity and toughness. After heat treatment, its strength significantly increases, but its plasticity and toughness decrease.

Typical mechanical properties are:

Tensile Strength: 900 MPa

Yield Strength: 650 MPa

Elongation: 20%

Reduction of Area: 50%

Applications of 904L Stainless Steel

Due to its excellent corrosion resistance, 904L stainless steel is widely used in:

1. Chemical industry: Resistant to strong acids and bases.
2. Petroleum and natural gas industry: Superior corrosion resistance in sulfur-containing environments.
3. Paper industry: Resistant to corrosion from sulfates and chlorides.
4. Pharmaceutical industry: Resistant to various corrosive chemicals.
5. Food and beverage production: Combines corrosion resistance with good mechanical and welding properties.

Advantages of 904L Stainless Steel

1. Superior corrosion resistance.
2. Excellent welding properties.
3. Outstanding mechanical properties.
4. Good impact resistance at low temperatures.
5. High wear resistance.
6. Stability at high temperatures, operable between 425℃-1300℃.
In conclusion, the unique elemental composition of 904L stainless steel grants it superior corrosion resistance, welding, and mechanical properties, as well as wear resistance and high-temperature stability. Its unique properties make it a popular choice in various industries. However, its cost is higher compared to other stainless steel materials, so considerations of practicality and budget are essential.

Aoxing Mill’s 904L Stainless Steel

At Aoxing Mill, we recognize the unparalleled potential of 904L stainless steel. As industry pioneers, we are committed to leveraging its strengths to deliver top-tier solutions for our clients. Our dedication to quality and innovation ensures that we remain at the forefront of stainless steel applications and advancements.