SMO 254
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SMO 254
SMO 254, also known as 6Mo or UNS S31254, is a high-alloy austenitic stainless steel that offers exceptional corrosion resistance, particularly in aggressive and chloride-rich environments. Here’s some information about SMO 254:
Composition:
- SMO 254 contains a high percentage of the following elements:
- Chromium (Cr): Approximately 20.0 – 22.0%
- Nickel (Ni): Approximately 17.5 – 18.5%
- Molybdenum (Mo): Approximately 6.0 – 6.5%
- Nitrogen (N): Approximately 0.18 – 0.22%
- Copper (Cu): Approximately 0.5 – 1.0%
- Iron (Fe): Makes up the balance of the alloy
- It also contains small amounts of other elements like manganese, silicon, and carbon.
Key Features:
- Excellent Corrosion Resistance: SMO 254 is highly resistant to corrosion in various aggressive environments, including seawater, acids, and chlorides.
- High Strength: It has good mechanical properties, including high tensile and yield strength.
- Resistance to Pitting and Crevice Corrosion: This alloy is known for its resistance to pitting and crevice corrosion in chloride-containing solutions.
- High Temperature Resistance: SMO 254 maintains its corrosion resistance even at elevated temperatures.
Applications: SMO 254 is commonly used in industries and applications that require superior corrosion resistance, such as:
- Chemical Processing: Equipment for handling aggressive chemicals.
- Oil and Gas: Offshore and onshore facilities, subsea pipelines.
- Desalination: Seawater desalination plants.
- Pulp and Paper: In bleach plant equipment.
- Pharmaceuticals: Pharmaceutical and biotechnology applications.
Forms: SMO 254 is available in various forms, including sheets, plates, pipes, tubes, fittings, and bars, to meet different industrial requirements.
Standards: SMO 254 materials conform to various industry standards, including ASTM A240 (for sheets and plates), ASTM A312 (for pipes), and ASTM A276 (for bars), ensuring quality and performance in demanding applications.
SMO 254 is a specialized material known for its exceptional resistance to corrosion. When using it in applications, it’s important to choose the appropriate form, size, and product type based on specific requirements and to ensure proper welding and fabrication procedures for optimal performance.
- Thickness : 4mm-100mm
- Width : 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
- Length : 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
- Size : 5 mm To 500 mm
- Diameter : 0.1 mm to 100 mm
- Length : 100 mm To 3000 mm Long & Above
- Size : 19mm – 305mm
Material Certification and Traceability
At Satyam Overseas, we prioritize Material Certification and Traceability. Our materials, meeting ASTM and ASME standards, come with 3.1 Mill Test Certificates as a guarantee of compliance. Additionally, upon request, we provide 3.2 Mill Test Certificates for added assurance. Every material is clearly marked and accompanied by a corresponding certificate, meticulously linking markings to certification. This meticulous approach ensures complete accountability and unwavering reliability throughout our supply chain.
Chemical Composition
| Element | Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Nitrogen (N) | Copper (Cu) | Iron (Fe) | Manganese (Mn) | Silicon (Si) | Carbon (C) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Composition Range
|
20.0 – 22.0%
|
17.5 – 18.5%
|
6.0 – 6.5%
|
0.18 – 0.22%
|
0.5 – 1.0%
|
Balance |
≤ 1.00%
|
≤ 0.70%
|
≤ 0.020%
|
≤ 0.030%
|
≤ 0.010%
|
physical properties
| Property | Density | Melting Range | Specific Heat Capacity | Thermal Conductivity | Electrical Resistivity | Young's Modulus (E) | Poisson's Ratio (ν) |
|---|---|---|---|---|---|---|---|
|
Value |
8.0 g/cm³ (0.289 lb/in³)
|
1310 – 1350°C (2390 – 2462°F)
|
0.77 J/g°C (0.18 Btu/lb°F)
|
13.5 W/m·K (9.3 Btu·in/ft²·h·°F)
|
0.85 μΩ·m (84 μΩ·in)
|
200 GPa (29,000,000 psi)
|
0.3 |