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Corrosion Resistant Austenitic 254SMo Stainless Steel Plate Cold Rolled S31254

Certification	ISO, AISI, ASTM
Quantité de commande min	50 kg
Prix	US $8.25-12.85 / kg

Détails sur le produit

Numéro de modèle.	S31254	Forme	Plat
Technique	laminé à froid	Traitement de surface	Brillant
Spécification	12202440, 15003000, 15006000, 20006000 mm	Capacité de production	50000KGS
Contenu en fer	55,69%	contenu de chrome	20%
Contenu en nickel	18%	Contenu en molybdène	60,1%
Teneur en azote	0,20%	Teneur en carbone	0,010%
Résistance à la traction	680 MPa	Limite d'élasticité	300 MPA
Allongement à la rupture	50%
Mettre en évidence	Corrosion Resistant Stainless Steel Plate , Austenitic 254SMo Plate , Cold Rolled S31254 Plate

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Description de produit

254SMo Austenitic Stainless Steel Plate 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 below 0.01%, it qualifies as super austenitic stainless steel.

Key Features of 254SMo Stainless Steel

254SMo represents a class of super stainless steel characterized by high nickel, chromium, and molybdenum content. The 6% molybdenum content provides exceptional local corrosion resistance, including excellent resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions such as seawater, aeration, gap environments, and low-speed scouring. This makes it a viable alternative to nickel-based alloys and titanium alloys.

The steel exhibits superior high-temperature resistance and corrosion resistance compared to standard 304 stainless steel. Its stable austenitic metallurgical structure ensures reliable performance across various applications.

Extensive field testing confirms 254SMo's 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 solutions used in paper bleaching, 254SMo demonstrates corrosion resistance comparable to the most resistant nickel-based alloys and titanium.

The high nitrogen content provides enhanced mechanical strength compared to other austenitic stainless steels, while maintaining high ductility, impact strength, and excellent weldability. The high molybdenum content may result in a slightly rougher surface after pickling due to increased oxidation during annealing, but this does not compromise corrosion resistance.

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: Nuclear power generation, comprehensive coal utilization, ocean wave power generation
Petrochemical Industry: Refining, chemical equipment
Food: Salt production, soy sauce brewing
High Concentration Chloride Environments: Paper industry, various bleaching devices
Other industrial applications requiring superior corrosion resistance