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254 SMO Tubing S31254 Pipe Seamless Corrosion Resistant High Molybdenum Super Austenitic Stainless Steel

Certification	ISO, AISI, ASTM
Minimum Order Quantity	50 kg
Price	US $5.85-11.85 / kg

Product Details

Model NO.	254 SMO	Shape	Flat
Technique	Cold Rolled	Surface Treatment	Bright
Specification	OD 6-630mm	Production Capacity	50000kgs
Carbon Content	0.010%	Chromium Content	20%
Nickel Content	18%	Molybdenum Content	6.1%
Nitrogen Content	0.20%	Tensile Strength	680 MPa
Yield Strength	300 MPa	Elongation At Break	50%
Hardness Brinell	210
Highlight	Corrosion Resistant 254 SMO Tubing , High Molybdenum S31254 Pipe , Super Austenitic Seamless Tubing

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Product Description

254SMo Super Austenitic Stainless Steel

254SMo is an austenitic stainless steel specifically developed for use in halide-containing environments such as seawater. This steel demonstrates superior performance particularly in halide-containing acids and offers excellent resistance to uniform corrosion. With carbon content below 0.02%, it qualifies as pure austenitic stainless steel, and when carbon content is under 0.01%, it can be classified as super austenitic stainless steel.

Key Features of 254SMo Stainless Steel

High-alloy composition with elevated nickel, chromium, and molybdenum content
6% molybdenum content provides exceptional local corrosion resistance
Superior resistance to pitting corrosion (PI ≥ 40) and stress corrosion
Excellent performance in harsh conditions including seawater, aeration, gaps, and low-speed scouring
Suitable replacement for nickel-based alloys and titanium alloys
Enhanced high-temperature resistance and corrosion resistance compared to 304 stainless steel
Stable austenitic metallurgical structure
High crevice corrosion resistance in seawater, even at elevated temperatures
Strong corrosion resistance in acidic solutions and oxidizing halide solutions
High nitrogen content provides improved mechanical strength
Excellent ductility, impact strength, and weldability

Technical Specifications

Material Standards

Standard	UNS	Werkstoff Nr.	EN	SS	AFNOR
254 SMO	S31254	1.4529	X1CrNiMoCuN20-18-7	2378*	Z1 CNDU 20.18.06AZ*

Chemical Composition

Element	Content (%)
Iron, Fe	55.69
Chromium, Cr	20
Nickel, Ni	18
Molybdenum, Mo	6.1
Nitrogen, N	0.20
Carbon, C	0.010

Mechanical Properties

Properties	Metric	Imperial
Tensile strength	680 MPa	98600 psi
Yield strength	300 MPa	43500 psi
Modulus of elasticity	195 GPa	28300 ksi
Shear modulus	75 GPa	10900 ksi
Poisson's ratio	0.30	0.30
Elongation at break	50 %	50 %
Hardness, Brinell	210	210

Applications

Ocean: Marine structures in sea environments, seawater desalination, marine aquaculture, seawater heat exchange
Environmental Protection: Flue gas desulfurization for thermal power generation, wastewater treatment
Energy: Atomic power generation, comprehensive coal utilization, ocean wave power generation
Petrochemical Industry: Refining operations, chemical equipment
Food Industry: Salt production, soy sauce brewing processes
High Chloride Environments: Paper industry applications, various bleaching devices
Other industrial applications requiring superior corrosion resistance