Stainless Steel 254SMO Plate, 254 SMO Sheet, UNS S31254 Plate, 1.4547 Plate, 254 SMO Hot Rolled Plate, UNS S31254 Cold Rolled Plate.

Alloy 254 SMO Plate is a very high end, molybdenum and nitrogen alloyed super austenitic stainless steel with low carbon content. Stainless Steel 254SMO Plate demonstrates outstanding resistance to pitting, crevice corrosion stress cracking, and corrosion fatigue uniform corrosion. 254 SMO Plate, also known as UNS S31254 Plate or 1.4547 Plate, is a high-alloy austenitic stainless steel with excellent corrosion resistance. UNS S31254 Plate has a corrosive resistance level that is twice that of 300 series stainless steel and is extremely resistant to pitting and crevice corrosion. Due to its superior resistance to seawater, 1.4547 Plate is a popular choice for maritime applications.

Stainless Steel 254SMO Plate is made with a unique combination of metals such as chromium, molybdenum, and nitrogen that gives 254 SMO Sheet unparalleled strength and durability. The high levels of these metals make 1.4547 Plate ideal for use in harsh environments such as chemical processing, oil and gas, and petrochemical industries. The alloy is also resistant to high temperatures and can withstand up to 1000°C without losing its shape or mechanical properties.

1. Difference between 254 SMO Sheet, Plate & Foil

Thickness less than 0.15mm is called a ASME SA 240 S31254 Foil.

Thickness greater than 0.15 mm and less than 6.35mm is called a Alloy 254 6mo Sheet.

Thickness greater than 6.35 mm is called a UNS S31254 F44 Plate.

2. SMO 254 Sheet, Plate & Coil Specifications

Standards

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  UNS: S31254

  
  

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  EN Number: 1.4547

  
  

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  EN Name: X1CrNiMoCuN20-18-7

  
  

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  W.Nr.: 1.4529**

  
  

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  SS: 2378*

  
  

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  AFNOR: Z1 CNDU 20.18.06AZ*

  
  

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3.Applications

254 SMO is used in the following applications:

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  Equipment for handling of seawater, such as, seawater cooling, cooling water pipes, ballast water systems, firefighting systems etc.

  
  

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  Hydraulic and instrumention tubing

  
  

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  Equipment in pulp bleaching plants

  
  

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  Components in gas cleaning systems

  
  

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  Tanks and pipelines for chemicals with high halide contents

  
  

Avoid abrasion against copper/copper alloys or other similar metals which, if present in metallic form, can cause cracks during subsequent welding, hot processing or heat treatment.

Machining

254 SMO is a high alloyed austenitic stainless steel and thus tougher inserts in metal cutting are needed than is the case for lower alloyed austenitic grades. When machining 254 SMO considerably lower cutting speeds are recommended compared to the grades Sanmac 304/304L and Sanmac 316/316L, which have improved machinability.

4. Documents

Documentation

• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)

SMO 254 Plate, Sheet & Coil Chemical Composition

SMO 254 Sheets, Plates & Coils Mechanical Properties

Equivalent Grades for 254 SMO Sheets & Plates

5. 254 SMO Plate Physical Properties: