Stainless Steel 254smo Tube

S31254 254smo Stainless steel Pipe Manufacturer, Supplier. Contact us to get free quote and sample!

 

In the chemical, marine engineering, flue gas desulfurization (FGD) and pharmaceutical industries, corrosion is the primary threat to the life and safety of equipment and pipelines. When ordinary stainless steel such as 316L is unable to cope, S31254 (UNS S31254) super austenitic stainless steel pipe becomes the key choice for engineers to cope with extreme corrosion challenges.

 

ASTM A312 S31254 Pipe Manufacturer, Supplier

As a trusted stockist and exporter with a decade and a half of global experience, HT PIPE offers an extensive range of industrial materials: pipes, sheets, bars, plus precision-engineered fittings, flanges, and couplings. Contact our team for free, customized quotes and product brochures.

 

SMO 254 / UNS S31254 Pipes Specifications

Specifications	ASTM A 409 ASME SA 409 / ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358
Dimensions	ASTM, ASME, and API
Size	3/4″ – 12″
Thickness	Sch10, Sch40, Sch80, etc.
Type	Seamless / ERW / Welded / Fabricated
Form	Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipe, "U" Shape, Hydraulic Pipes
Length	Single Random, Double Random & Cut Length.
End	Plain End, Beveled End, Treaded

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SMO 254 Pipes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	SIS	AFNOR	EN
SMO 254	S31254	1.4547	2378	Z1 CNDU 20.18.06Az	X1CrNiMoCuN20-18-7

 

SMO 254 Pipes Chemical Composition

C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu
Carbon	Manganese	Phosphorus	Sulfur	Silicon	Chromium	Nickel	Molybdenum	Nitrogen	Copper
0.020 max	1.00 max	0.030 max	0.015 max	0.80 max	19.5–20.5	17.5–18.5	6.0–6.5	0.18–0.22	0.50–1.00

 

SMO 254 Pipes Mechanical & Physical Properties

Element	SMO 254
Density	8.0 g/cm3
Melting Point	1320-1390°C
Tensile Strength	650
Yield Strength (0.2%Offset)	300
Elongation	35%
Hardness (HB) max	220

 

Corrosion resistance of 254smo Pipe

ss254smo pipe Anti-pitting and crevice corrosion

The extremely high pitting resistance equivalent value (PREN > 43) is its most significant label. High molybdenum and nitrogen content effectively resists localized corrosion induced by chloride ions (Cl⁻), making it perform much better than conventional stainless steel (such as 316L, PREN ~26) in environments such as seawater, chlorine bleach, and salt solutions.

 

S31254 stainless steel pipe Resistance to stress corrosion cracking

Excellent resistance to chloride stress corrosion cracking (SCC). This makes S31254 pipe an ideal choice for handling hot concentrated chloride solutions, seawater cooling systems, and certain chemical processes, avoiding sudden failure of equipment under the combined effects of stress and corrosion.

 

UNS S31254 pipe Wide range of acid and alkali resistance

It exhibits good corrosion resistance in moderate concentrations of sulfuric acid, phosphoric acid, organic acids (such as acetic acid, formic acid), and many strong oxidizing acids (such as nitric acid) and weak reducing acids. Its corrosion resistance range far exceeds that of ordinary austenitic stainless steel.

Application of stainless steel 254smo tube

Oil and gas: submarine pipelines, downhole tools for acid gas wells.

Chemical equipment: sulfuric acid reactors, phosphoric acid evaporators, pickling equipment.

Nuclear industry: containers and pipelines for nuclear waste treatment systems.

Marine engineering: seawater desalination devices, heat exchangers.

Environmental protection: key components of flue gas desulfurization (FGD) systems.

 

Dimensional Tolerances of ss smo 254 pipe

OD	OD Tolerance	Wall Tolerance
≤ .500″	± .005"	± 15%
.500″–.750″	± .005"	± 10%

 

 

 

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