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Corrosion Resistant 254SMo Stainless Steel Plate with High Molybdenum Content and Good Resistance to Pitting Corrosion

Certification	ISO, AISI, ASTM
Minimum Order Quantity	50 kg
Price	US $8.25-10.85 / kg

Product Details

Model NO.	254SMO	Shape	Flat
Technique	Cold Rolled	Surface Treatment	Bright
Specification	12202440, 15003000, 15006000, 20006000mm	Carbon Content	0.010%
Tensile Strength	680 MPa	Yield Strength	300 MPa
Modulus Elasticity	195 GPa	Shear Modulus	75 GPa
Poisson Ratio	0.30	Elongation Break	50%
Brinell Hardness	210	Chromium Content	20%
Nickel Content	18%
Highlight	Corrosion Resistant 254SMo Stainless Steel Plate , High Molybdenum Content Alloy 254SMo Plate , Good Resistance to Pitting Corrosion Super Austenitic Stainless Steel Plate

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Product Description

Alloy 254SMO Technical Information - 254 SMO Plate

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 is classified as pure austenitic stainless steel, and when carbon content is under 0.01%, it qualifies as super austenitic stainless steel.

Features of Inox 254SMo

Super stainless steel represents a specialized category of stainless steel distinguished from conventional grades by its high alloy content of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content. This high molybdenum concentration provides exceptional local corrosion resistance, including excellent resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions such as seawater, aeration, crevices, and low-speed scouring. These properties make 254SMo a viable alternative to nickel-based alloys and titanium alloys.

Additionally, 254SMo exhibits superior high-temperature resistance and corrosion performance unmatched by 304 stainless steel. Metallurgically, this special stainless steel maintains a stable austenitic structure.

Extensive field testing and practical experience confirm that 254SMo maintains high crevice corrosion resistance in seawater, even at elevated temperatures—a characteristic shared by only a few stainless steel types. In acidic solutions and oxidizing halide solutions used in paper bleaching applications, 254SMo demonstrates corrosion resistance comparable to the most resistant nickel-based alloys and titanium.

The high nitrogen content in 254SMo provides enhanced mechanical strength compared to other austenitic stainless steels, while maintaining high ductility, impact strength, and excellent weldability. The elevated molybdenum content results in higher oxidation rates during annealing, producing a slightly rougher surface after pickling than conventional stainless steels, though this does not compromise corrosion resistance.

Specification

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

254SMo 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: Nuclear power generation, comprehensive coal utilization, ocean wave power generation
Petrochemical Industry: Refining operations, chemical processing equipment
Food: Salt production, soy sauce brewing processes
High Concentration Chloride Environments: Paper industry applications, various bleaching systems
Other specialized industrial applications