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Cold Rolled Bright Surface Corrosion Resistant Seamless Steel Pipe 254SMo

Certification	ISO, AISI, ASTM
Minimum Order Quantity	50 kg
Price	US $4.85-11.85 / kg

Product Details

Model Number	S31254/1.4547/254smo	Shape	Round
Technique	Cold Rolled	Surface Treatment	Bright
Outer Diameter	6-630mm	Iron Content	55.69%
Chromium Content	20%	Nickel Content	18%
Molybdenum Content	6.1%	Nitrogen Content	0.20%
Carbon Content	0.010%	Tensile Strength	680 MPa
Yield Strength	300 MPa	Elongation At Break	50%
Brinell Hardness	210
Highlight	Cold Rolled Seamless Steel Pipe , Bright Surface Stainless Steel Pipe , Corrosion Resistant 254SMo Pipe

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Product Description

UNS S31254 / 1.4547 / 254SMO Seamless 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 falls below 0.01%, it qualifies as super austenitic stainless steel.

Key Features of Inox 254SMo

Super stainless steel represents a specialized category of stainless steel. Unlike conventional stainless steel, it is a high-alloy stainless steel containing elevated levels of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content.

Excellent local corrosion resistance due to high molybdenum content
Superior pitting corrosion resistance (PI ≥ 40) and stress corrosion cracking resistance in harsh conditions including seawater, aeration, gaps, and low-speed scouring
Suitable replacement for nickel-based alloys and titanium alloys
Outstanding high-temperature resistance and corrosion resistance surpassing 304 stainless steel
Stable austenitic metallurgical structure
High crevice corrosion resistance in seawater, even at elevated temperatures
Strong corrosion resistance in acidic solutions and oxidizing halide solutions comparable to nickel-based alloys and titanium
Enhanced mechanical strength due to high nitrogen content
High ductility, impact strength, and excellent weldability

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