Calico Metal Alloys LLP is a trusted supplier of SMO 254 Plates in India. Renowned for our commitment to quality and reliability, we specialize in providing high-grade metal alloys tailored to meet the diverse requirements of various industries. Our SMO 254 Plates are recognized for their exceptional corrosion resistance and longevity, making them ideal for critical applications. Count on us to deliver top-notch products and unmatched service to meet your specific needs.

What are SMO 254 Plates?

SMO 254 plates refer to a grade of stainless steel alloy known for its exceptional corrosion resistance in aggressive environments, including those containing chloride ions. They are characterized by high levels of chromium, molybdenum, and nitrogen, providing superior resistance to pitting, crevice corrosion, and stress corrosion cracking. SMO 254 plates find applications in industries such as chemical processing, oil and gas, and seawater desalination due to their durability and performance in harsh conditions.

SMO 254 Plates

Manufacturing Process Of SMO 254 Plates

Reheating Furnace

Reheating furnaces are used in hot rolling mills to heat the steel stock to the rolling temperatures.

Scale Breaker

Slab moves first through a scale breaker, which is a two-high rolling mill with vertical rolls that loosens the furnace scale and removes it with high-pressure water jets.

Finish Rolling

The last stage of the rolling process is cold rolling,


Cooling or Quenching is a process of cooling a metal at a rapid rate.

Skin Pass Mill

This produces high-gloss surfaces and achieves the desired mechanical strip properties such as deep-drawing strength.

Marking & Packing

Proper packaging and labeling not only makes the final product look attractive but also save a huge amount of money by saving the product from wrong handling.

Advantages of SMO 254 Plates

  1. Corrosion Resistance: SMO 254 plates exhibit exceptional resistance to corrosion in various corrosive environments, including seawater, brine solutions, sulfuric acid, phosphoric acid, and other chloride-containing solutions. This makes them suitable for use in industries such as chemical processing, marine engineering, and desalination plants.
  2. High Strength: SMO 254 plates possess high tensile and yield strength, providing structural integrity and reliability in demanding applications.
  3. Excellent Weldability: These plates are easily weldable using conventional welding methods, which facilitates fabrication and construction processes, reducing manufacturing costs and time.
  4. Good Formability: SMO 254 plates offer good formability, enabling them to be shaped and formed into various components and structures to meet specific requirements.
  5. Resistance to Stress Corrosion Cracking: SMO 254 exhibits resistance to stress corrosion cracking, making it suitable for use in applications where materials are subjected to both corrosion and mechanical stress.
  6. Wide Temperature Range: SMO 254 plates maintain their mechanical properties and corrosion resistance over a wide range of temperatures, from cryogenic to elevated temperatures, providing versatility in application.

SMO 254 Plate Specifications

Standards ASTM A240 / ASME SA240
Dimensions ASTM, ASME, and API
Sheets Plates Width 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Sheets Plates Thickness 4mm-100mm
Sheets Plates Length 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface Finish No.1, 2B, BA, 8K Mirror, Hairline, satin (Met with Plastic Coated) Embossed, brush, No.4, HL, matt, pvc etc.
Value added services Cladding, Heat Treatment, Annealed, Pickling, Polish, Rolling, Cutting, Bending, Forging, Minor Fabrication Etc.
Hardness Half Hard, Quarter Hard, Soft, Hard, Spring Hard
Form Coils, Foils, Rolls, Strip, Flats, Blank (Circle), Ring (Flange)

Types Of SMO 254 Plate


SMO 254 Hot Rolled Plate


SMO 254 Cold Rolled Plate


SMO 254 Chequered Plate


SMO 254 Polished Plate


SMO 254 2B Finish Plate


SMO 254 Plain Plate


Other Types Of SMO 254 Plate

6 Moly Perforated Plate SMO 254 Cold Rolled Plate
20 Gauge SMO 254 Plate SMO 254 High Performance Plate
Precision Ground Stainless Steel Alloy 254 Plate Extra-Heavy Alloy 254 Plate
SMO 254 Perforated Plate 6 Moly Thik Plate
SMO 254 Plate 10 Gauge SMO 254 Plate
Stainless Steel Alloy 254 Plain Plates SMO 254 2B Finish Plates
ASME SA240 SMO 254 Cold Rolled Plates ASTM A240 SMO 254 Plates
Alloy 254 Plates Cut To Size Polished SMO 254 Plate
SMO 254 BA Finish Plates Alloy 254 HR Plates
Quality SMO 254 Plate SMO 254 CR Plates
SMO 254 Custom Length Plate Custom Alloy 254 Plates

6 Moly Plates Equivalent Grade

SMO 254 1.4547 S31254 2378 Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7

Chemical Composition of SMO 254 Plates

SMO 254, also known as 6Mo, is a super-austenitic stainless steel primarily composed of nickel, chromium, and molybdenum. Its chemical composition typically includes about 18-20% chromium, providing exceptional resistance to corrosion, especially in harsh environments like seawater and acidic conditions. Molybdenum content ranges between 6-6.5%, enhancing its resistance to pitting and crevice corrosion. Additionally, it contains significant amounts of nickel (17.5-18.5%), ensuring high ductility and toughness even at elevated temperatures. Other elements such as nitrogen and copper may be present in smaller quantities, further improving its corrosion resistance and mechanical properties. Overall, SMO 254 plates offer outstanding performance in corrosive environments, making them ideal for applications in chemical processing, offshore oil and gas, and seawater handling industries.

Grade Ni Cr Mo Cu N C Mn Si P S
SMO 254 17.5 – 18.5 19.5 – 20.5 6 – 6.5 0.5 – 1 0.18 – 0.22 0.02 max 1 max 0.8 max 0.03 max 0.01 max

Mechanical Properties of SMO 254 Plates

SMO 254 plates exhibit exceptional mechanical properties, making them highly suitable for demanding industrial applications. With a tensile strength ranging from 650 to 850 MPa and a yield strength of approximately 300 MPa, these plates offer robust structural integrity and resistance to deformation under high loads. They also boast excellent toughness and ductility, ensuring superior performance in challenging environments. Additionally, SMO 254 plates demonstrate outstanding corrosion resistance, particularly in harsh chemical and acidic environments, further enhancing their durability and reliability in various industrial settings.

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1320-1390 ℃ 650 300 35 %

Applications of SMO 254 Plates

SMO 254 is a high-alloy austenitic stainless steel with excellent corrosion resistance, especially in aggressive environments containing chlorides. SMO 254 plates find numerous applications across various industries due to their unique properties. Here are some common applications:

  1. Chemical Processing Industry: SMO 254 plates are extensively used in chemical processing equipment such as reactors, heat exchangers, and piping systems where corrosion resistance against acids, particularly sulfuric acid, phosphoric acid, and organic acids, is crucial.
  2. Oil and Gas Industry: In offshore and onshore oil and gas platforms, SMO 254 plates are employed in equipment such as separators, pumps, valves, and pipelines, where exposure to corrosive environments containing seawater and hydrocarbons is prevalent.
  3. Pharmaceutical Industry: SMO 254 plates are suitable for pharmaceutical manufacturing equipment such as reactors, storage tanks, and piping systems, where resistance to corrosive chemicals and sanitizing agents is essential for maintaining product purity.
  4. Food Processing Industry: SMO 254 plates find applications in food processing equipment where sanitation and corrosion resistance are paramount, such as heat exchangers, storage tanks, and processing vessels.
  5. Marine Industry: SMO 254 plates are utilized in marine applications such as shipbuilding, offshore platforms, and seawater desalination plants due to their exceptional resistance to corrosion in marine environments.
  6. Mining Industry: SMO 254 plates are used in mining applications for equipment subjected to corrosive environments, such as ore processing equipment, slurry transport systems, and chemical storage tanks.

Overall, SMO 254 plates are versatile materials suitable for a wide range of industrial applications where corrosion resistance, durability, and reliability are critical factors.

Electrical Industry


Automotive Industry


Construction Industry


Defence Industry


Pharmaceutical Industry


Petroleum Industry


Petrochemical Industry


Milk & Dairy Industry

Milk & Dairy

Export & Supply Destinations Of Alloy 254 Plates

Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.

Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.

Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.

Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America.

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.