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Seamless Cold Rolled 254SMo Stainless Steel Pipe with Superior Corrosion Resistance

証明	ISO, AISI, ASTM
最小注文数量	50 kg
価格	US $4.85-11.85 / kg

商品の詳細

型番	S31254	形	ラウンド
技術	冷間圧延	表面処理	明るい
仕様	外径6～630mm	生産能力	50000KGS
炭素含有量	0.010%	クロムの内容	20%
ニッケル含有量	18%	モリブデン含有量	60.1%
窒素含有量	0.20%	抗張力	680MPa
降伏強さ	300 MPa	破断伸び	50%
ブリネル硬度	210
ハイライト	Seamless Stainless Steel Pipe , Cold Rolled 254SMo Pipe , Corrosion Resistant Seamless Pipe

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製品の説明

A312 S31254, 254SMo Seamless Stainless Steel Pipe

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 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 distinguished from ordinary grades by its high alloy content of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content, which provides exceptional local corrosion resistance. This material exhibits superior resistance to pitting corrosion (PI ≥ 40) and stress corrosion cracking in demanding conditions including seawater, aeration, crevice environments, and low-speed scouring applications, making it an excellent alternative to nickel-based alloys and titanium alloys.

254SMo demonstrates outstanding high-temperature resistance and corrosion performance that surpasses conventional 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 environments typical of paper bleaching applications, 254SMo exhibits corrosion resistance comparable to the most advanced nickel-based alloys and titanium alloys.

The high nitrogen content in 254SMo provides enhanced 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 the material's 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

Applications

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

Material Designations

Grade 254SMo Type 254SMo Inox 254SMo AISI 254SMo SUS 254SMo 1.4547 UNS S31254 Acero 254SMo

札:

Seamless Cold Rolled 254SMo Stainless Steel Pipe with Superior Corrosion Resistance

Seamless Stainless Steel Pipe

Cold Rolled 254SMo Pipe

Corrosion Resistant Seamless Pipe