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Cold Rolled 254smo Stainless Steel Sheet with Bright Surface and Superior Corrosion Resistance

Certification	ISO, AISI, ASTM
Minimum Order Quantity	50 kg
Price	US $5.35-13.5 / kg

Product Details

Model NO.	254smo	Shape	Flat
Technique	Cold Rolled	Surface Treatment	Bright
Specification	12202440, 15003000, 15006000, 20006000mm	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	Cold Rolled 254smo Stainless Steel Sheet , Bright Surface S31254 Sheet , Corrosion Resistant Stainless Steel Plate

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Product Description

Cold Rolled 254SMo Stainless Steel Sheet S31254

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 features excellent resistance to uniform corrosion. With carbon content below 0.02%, it is classified as pure austenitic stainless steel, and when carbon content is less than 0.01%, it qualifies as super austenitic stainless steel.

Features of Inox 254SMo

Super stainless steel represents a specialized category of stainless steel. Unlike conventional stainless steel, 254SMo is a high-alloy stainless steel containing elevated levels of nickel, chromium, and molybdenum. The most notable characteristic is its 6% molybdenum content, which provides exceptional local corrosion resistance.

Key advantages include outstanding resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions such as seawater, aeration, gaps, and low-speed scouring. This makes 254SMo an excellent alternative to nickel-based alloys and titanium alloys. The steel also offers superior high-temperature resistance and corrosion performance that exceeds standard 304 stainless steel capabilities.

Metallurgically, 254SMo maintains a stable austenitic structure. Extensive field testing and practical experience confirm its high crevice corrosion resistance in seawater, even at elevated temperatures—a property shared by only a few stainless steel types. In acidic solutions and oxidizing halide environments typical of paper bleaching applications, 254SMo demonstrates corrosion resistance comparable to the most advanced nickel-based alloys and titanium.

The high nitrogen content enhances mechanical strength compared to other austenitic stainless steels, while maintaining excellent ductility, impact strength, and 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

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

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