- Material: 254 SMO / UNS S31254 / EN 1.4547
- Standards: ASTM A182, ASME SA182
- Flange Types: Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint
- Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500
- Size Range: ½” to 48” (custom dimensions available)
- Surface Finish: RF, FF, RTJ
- Manufacturing Process: Forged, Machined, Heat Treated
254 SMO/UNS S31254/ EN 1.4547 Super Austenitic Stainless Steel Flanges
254 SMO flanges are manufactured from a high-alloy austenitic stainless steel designed for exceptional corrosion resistance in chloride-rich and aggressive industrial environments. Also known as UNS S31254, 254 SMO contains elevated levels of chromium, molybdenum, and nitrogen, providing outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking.
254 SMO flanges are widely used in industries where conventional stainless steel grades cannot withstand harsh chemical exposure or seawater corrosion.
Key Features of 254 SMO Flange
- Excellent resistance to pitting and crevice corrosion
- Superior performance in chloride and seawater environments
- High resistance to stress corrosion cracking
- Excellent mechanical strength and durability
- Good weldability and fabrication properties
- Long service life in aggressive industrial conditions
Specifications
- Material: 254 SMO / UNS S31254 / EN 1.4547
- Standards: ASTM A182, ASME SA182
- Flange Types: Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint
- Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500
- Size Range: ½” to 48” (custom dimensions available)
- Surface Finish: RF, FF, RTJ
- Manufacturing Process: Forged, Machined, Heat Treated
Applications
254 SMO flanges are commonly used in highly corrosive and chloride-rich environments:
- Desalination Plants
- Marine and Offshore Engineering
- Chemical Processing Industry
- Pulp and Paper Industry
- Heat Exchangers and Condensers
- Seawater Cooling Systems
- Oil and Gas Processing Plants
Why Choose Our 254 SMO Flanges?
We manufacture premium-quality 254 SMO flanges under strict quality standards to ensure superior corrosion resistance, dimensional accuracy, and long-term reliability.
Our advantages include:
- Custom flange sizes and machining available
- Competitive factory-direct pricing
- Strict inspection and testing procedures
- Fast global shipping
- Full material certification (MTC EN 10204 3.1/3.2)
FAQ
What is 254 SMO flange used for?
254 SMO flanges are used in highly corrosive environments such as seawater systems, offshore platforms, and chemical processing plants.
Is 254 SMO better than 316 stainless steel?
Yes, 254 SMO offers significantly better resistance to chloride corrosion, pitting, and crevice corrosion compared to 316 stainless steel.
What industries use 254 SMO flanges?
These flanges are widely used in marine, desalination, offshore oil & gas, and chemical processing industries.
Get a quote
Contact us now for a quotation.
Email: sales@hengyimetal.com
WhatsApp:+86 19521258704
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