S31254

S31254, also known as 254 SMO or Alloy 254, is a high-alloy austenitic stainless steel with significant additions of chromium, molybdenum, and nitrogen. This combination of elements provides exceptional resistance to both corrosion and pitting in various aggressive environments, particularly those containing chlorides and acids.

Here is a comprehensive description of S31254:

Chemical Composition:

• Chromium (Cr): 19.5-20.5%

• Nickel (Ni): 17.5-18.5%

• Molybdenum (Mo): 6.0-6.5%

• Nitrogen (N): 0.18-0.22%

• Iron (Fe): Balance

• Copper (Cu): 0.5-1.0%

• Manganese (Mn): ≤1.0%

• Silicon (Si): ≤0.80%

• Phosphorus (P): ≤0.030%

• Sulfur (S): ≤0.010%

Key Features and Characteristics:

1. Corrosion Resistance: S31254 offers exceptional resistance to corrosion in a wide range of corrosive environments, including seawater, acidic solutions (such as sulfuric acid), and chloride-containing environments like marine atmospheres and brine solutions.

2. Pitting and Crevice Corrosion Resistance: The high levels of chromium, molybdenum, and nitrogen provide superior resistance to localized corrosion, making S31254 highly resistant to pitting and crevice corrosion.

3. High Strength: This alloy maintains high strength and excellent toughness, even at elevated temperatures, allowing it to withstand mechanical stresses and pressure in various applications.

4. Excellent Weldability: S31254 exhibits good weldability and can be readily welded using conventional welding techniques, ensuring ease of fabrication and assembly.

5. Heat Resistance: S31254 retains its mechanical properties at elevated temperatures, making it suitable for use in applications involving high temperatures and thermal cycling.

6. Versatility: Due to its superior corrosion resistance and mechanical properties, S31254 finds applications in diverse industries such as chemical processing, oil and gas, pulp and paper, desalination, and marine engineering.

Applications:

1. Chemical processing equipment such as reactors, vessels, and piping systems

2. Oil and gas industry components including pipelines, valves, and heat exchangers

3. Pulp and paper processing equipment such as digesters and bleach plants

4. Desalination plants and equipment for seawater processing

5. Marine engineering components like seawater piping, heat exchangers, and shafts

S31254 (254 SMO or Alloy 254) is a highly versatile stainless steel alloy known for its exceptional corrosion resistance, pitting and crevice corrosion resistance, high strength, and weldability. Its wide range of applications in aggressive environments makes it a preferred choice for demanding industrial applications.

Thickness:0.5/0.6/0.7/0.8/1.0/1.2/1.5/2.0/3.0