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S31254 Cold Rolled Corrosion Resistant 254SMo Stainless Steel Plate for Harsh Environments

Certificazione	ISO, AISI, ASTM
Quantità di ordine minimo	50 kg
Prezzo	US $8.85-11.85 / kg

Dettagli

Modello n.	S31254	Forma	Piatto
Tecnica	laminato a freddo	Trattamento superficiale	Luminoso
Specifica	12202440, 15003000, 15006000, 20006000 mm	Capacità produttiva	50000KG
Contenuto di ferro	55,69%	contenuto del cromo	20%
Contenuto di nichel	18%	Contenuto di molibdeno	60,1%
Contenuto di azoto	0,20%	Contenuto di carbonio	0,010%
Resistenza alla trazione	680MPa	Forza di snervamento	300 MPA
Allungamento a rottura	50%
Evidenziare	S31254 Stainless Steel Plate , Cold Rolled 254SMo Plate , Corrosion Resistant Super Austenitic Stainless Steel Plate

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Descrizione di prodotto

S31254 Stainless Steel Specifications F44 Plate

254SMo is an austenitic stainless steel 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.

Features of Inox 254SMo

Super stainless steel represents a specialized category of high-alloy stainless steel containing elevated levels of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content. This composition provides exceptional local corrosion resistance, including excellent resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions such as seawater, aeration, gaps, and low-speed scouring. These properties make 254SMo 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. Metallurgically, special stainless steels maintain a stable austenitic structure. Extensive field testing confirms 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 alloys. The high nitrogen content contributes to enhanced mechanical strength relative to other austenitic stainless steels, while maintaining high ductility, impact strength, and excellent weldability.

Specification

Standard Designations

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: Atomic 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