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Jiangsu Hongtu Metal Technology Co.,Limited

  • China,Wuxi ,Jiangsu
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China 254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum
China 254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum

  1. China 254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum
  2. China 254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum
  3. China 254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum

254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum

  1. MOQ: 300 kg
  2. Price: USD 12.0-18.5 / kg
  3. Get Latest Price
Payment Terms T/T, L/C at sight
Supply Ability 500 Tons per Month
Delivery Time 5-10 working days for stock, 20-35 days for production
Packaging Details PVC protective film on both sides, anti-rust paper, fumigated export-grade wooden pallet, vacuum packing available
Alloy 254 SMO (UNS S31254 / EN 1.4547)
Temper Annealed, Cold Rolled, Hot Rolled
Thickness 0.5mm - 30mm
Width 1000mm, 1219mm, 1250mm, 1500mm, 2000mm
Length 2000mm, 2438mm, 3000mm, 6000mm or Customized
Standard ASTM A240, EN 10088-2, NACE MR0175/ISO 15156, NORSOK M-650
Surface Finish No.1, 2B, 2D, Pickled & Passivated
Tensile Strength ≥ 650 MPa
Yield Strength ≥ 300 MPa
Elongation ≥ 35%
PREN (Pitting Resistance) ≥ 43.0
CPT (Critical Pitting Temp) ≥ 60°C (ASTM G48 Method C)
Application Seawater Desalination, Offshore Platforms, Chemical Tankers, FGD Systems, Bleach Plants
Brand Name Hongtu
Model Number 254 SMO (UNS S31254 / 1.4547)
Place of Origin Shanxi / Imported, China
Certification ISO 9001:2015, SGS, ASTM A240/A240M, NACE MR0175, NORSOK M-650

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T, L/C at sight Supply Ability 500 Tons per Month
Delivery Time 5-10 working days for stock, 20-35 days for production Packaging Details PVC protective film on both sides, anti-rust paper, fumigated export-grade wooden pallet, vacuum packing available
Alloy 254 SMO (UNS S31254 / EN 1.4547) Temper Annealed, Cold Rolled, Hot Rolled
Thickness 0.5mm - 30mm Width 1000mm, 1219mm, 1250mm, 1500mm, 2000mm
Length 2000mm, 2438mm, 3000mm, 6000mm or Customized Standard ASTM A240, EN 10088-2, NACE MR0175/ISO 15156, NORSOK M-650
Surface Finish No.1, 2B, 2D, Pickled & Passivated Tensile Strength ≥ 650 MPa
Yield Strength ≥ 300 MPa Elongation ≥ 35%
PREN (Pitting Resistance) ≥ 43.0 CPT (Critical Pitting Temp) ≥ 60°C (ASTM G48 Method C)
Application Seawater Desalination, Offshore Platforms, Chemical Tankers, FGD Systems, Bleach Plants Brand Name Hongtu
Model Number 254 SMO (UNS S31254 / 1.4547) Place of Origin Shanxi / Imported, China
Certification ISO 9001:2015, SGS, ASTM A240/A240M, NACE MR0175, NORSOK M-650
High Light 254 SMO Super Austenitic SS SheetUNS S31254 Seawater Resistant Plate6Mo Super Austenitic Alloy Sheet
254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet 0.5mm-30mm for Seawater Desalination Equipment
Product Overview

254 SMO is a state-of-the-art super austenitic stainless steel containing 6% molybdenum, delivering extraordinary corrosion resistance that bridges the performance gap between standard 300-series stainless steels and high-nickel alloys. With a PREN ≥ 43, 254 SMO provides robust resistance to pitting, crevice corrosion, and chloride stress corrosion cracking (SCC) in the most demanding marine, chemical, and offshore environments. Its significantly higher strength compared to 316L allows for lighter designs with excellent lifecycle economics.

Key Features
  • Premium 6% Mo Super Austenitic: PREN ≥ 43 ensures exceptional pitting and crevice corrosion resistance in high-chloride environments
  • Chloride SCC Immunity: High nickel and molybdenum content provides virtual immunity to chloride stress corrosion cracking
  • Superior Seawater Performance: Proven in decades of seawater handling, MSF desalination, and offshore platform service
  • High Strength: Tensile ≥ 650 MPa, yield ≥ 300 MPa — approximately 50% higher than 316L, enabling thinner, lighter designs
  • Excellent Weldability: Weldable with over-alloyed Ni-Cr-Mo fillers (ERNiCrMo-3) maintaining full corrosion resistance
  • Cost-Effective vs. Nickel Alloys: Delivers C-276 and 625 level corrosion resistance at a fraction of the material cost
Chemical Composition (Weight %)
ElementCMnSiPSCrNiMoCuN
254 SMO≤0.02≤1.00≤0.80≤0.030≤0.01019.5-20.517.5-18.56.0-6.50.50-1.000.18-0.22
Mechanical Properties (Annealed, Room Temperature)
PropertyValue
Tensile Strength≥ 650 MPa
Yield Strength (0.2% offset)≥ 300 MPa
Elongation in 50mm≥ 35%
Hardness (Rockwell B)≤ 96 HRB
Density8.0 g/cm³
PREN = %Cr + 3.3*%Mo + 16*%N≥ 43.0
Available Dimensions
ParameterRange
Thickness0.5mm - 30mm
Width1000mm - 2000mm
Length2000mm - 6000mm or Custom
Surface FinishNo.1, 2B, 2D, Pickled & Passivated
Applications
  • Multi-stage flash (MSF) and reverse osmosis (RO) desalination equipment
  • Seawater intake, piping, and heat exchanger tube sheets
  • Offshore oil and gas platform topside process equipment
  • Chemical tanker cargo tanks and piping systems
  • Flue gas desulfurization (FGD) absorber internals and outlet ducting
  • Bleach plant washers and filtrate tanks in pulp and paper mills
  • Tall oil distillation columns and fatty acid processing equipment
  • Pharmaceutical and fine chemical reactor vessels
Our Advantages
  • NORSOK M-650 Qualified: Material qualification per NORSOK standards for offshore oil and gas projects
  • ASTM G48 Testing: Critical pitting temperature (CPT) and crevice corrosion testing per ASTM G48 available for every heat
  • Full NACE Compliance: NACE MR0175/ISO 15156 certified for H₂S-containing sour service environments
  • Dual Sourcing: Premium Outokumpu mill material and cost-competitive TISCO domestic production options
  • Technical Expertise: Application engineering support for material selection, welding procedures, and fabrication guidelines
Contact our specialty alloys team for a comprehensive quotation on 254 SMO super austenitic stainless steel sheets. Premium product with full corrosion test documentation provided.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Exporter,Seller

  • Year Established:

    2006

  • Total Annual:

    15000000-20000000

  • Employee Number:

    400~500

  • Ecer Certification:

    Verified Supplier

Hongtu Metal was founded in 2006 with a registered capital of 27 million US dollars. It is a comprehensive, modern and high-quality enterprise integrating steel production, processing and sales. Since its establishment, the company has developed rapidly. It has built long-term and stable cooper... Hongtu Metal was founded in 2006 with a registered capital of 27 million US dollars. It is a comprehensive, modern and high-quality enterprise integrating steel production, processing and sales. Since its establishment, the company has developed rapidly. It has built long-term and stable cooper...

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Get in touch with us

  • Reach Us
  • Jiangsu Hongtu Metal Technology Co.,Limited
  • No.118 Beihuan Road, Xishan District, Wuxi City, Jiangsu Province China
  • https://www.sheetsstainless-steel.com/

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