USA Piping Solutions is a trusted manufacturer, supplier, and exporter of SMO 254 Pipes & Tubes in India, offering products that meet ASTM, ASME, and DIN specifications. Our range includes SMO 254 Seamless Pipes, SMO 254 Welded Pipes, SMO 254 Rectangular Pipes, SMO 254 ERW Pipes, SMO 254 EFW Tubes, and SMO 254 Hydraulic Tubing, all manufactured using premium-grade raw materials.
Also known as Alloy 254 Pipes & Tubes or UNS S31254 Pipes & Tubes, these are high-end austenitic stainless steels designed for superior resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. They combine excellent impact toughness, high ductility, and exceptional strength, making them a preferred choice across demanding industries.
Our 254 SMO Pipes & Tubes are manufactured in compliance with both national and international quality standards, available in a variety of grades, thicknesses, diameters, and custom sizes to meet client-specific requirements.
.webp)
SMO 254 vs 316L vs 904L
|
Property / Feature |
SMO 254 (UNS S31254) |
316L (UNS S31603) |
904L (UNS N08904) |
|---|---|---|---|
|
PREN Value |
~42–45 |
~24–26 |
~35–36 |
|
Pitting / Crevice Resistance |
Excellent – ideal for seawater and brines |
Good – not suitable for high-chloride seawater |
Very good – better than 316L but less than SMO 254 |
|
Chloride SCC Resistance |
Very high |
Moderate |
High |
|
Mechanical Strength (Tensile) |
650 MPa |
485 MPa |
490 MPa |
|
Temperature Range |
–50°C to 250°C |
–196°C to 425°C |
–196°C to 400°C |
|
Typical Applications |
Desalination, offshore, pulp & paper |
Food processing, mild marine |
Chemical processing, phosphoric acid |
254 SMO Stainless Steel Tube Specifications
At USA Piping Solutions, we supply 254 SMO Pipes & Tubes in a variety of shapes, sizes, and finishes to meet the most demanding industrial applications. Our SMO 254 Tubes are manufactured using high-quality alloy 254 stainless steel, conforming to international standards like AISI, ASTM, JIS, and GB. These tubes are available in round, square, and rectangular forms, with precise dimensional tolerances, exceptional corrosion resistance, and finishing options suitable for construction, food industry, decorative, and marine applications.
The table below provides the detailed technical specifications for 254 SMO Stainless Steel Tubes, covering standards, sizes, thickness, length, tolerances, welding types, finishes, testing, and certification details. These parameters ensure our 254 SMO Pipes & Tubes meet both structural and high-performance industrial requirements.
|
Parameter |
Specification |
|---|---|
|
Standards |
AISI, ASTM, JIS, GB, or as per customer requirement |
|
Round Tube Size (OD) |
16 to 119 mm or as per requirement |
|
Thickness (Round Tube) |
0.25 mm to 3.0 mm |
|
Length |
6 m or customized |
|
Tolerances |
OD: ±0.2 mmThickness: ±0.05 mmLength: ±0.5 mm |
|
Ends |
Bevelled ends / Plain ends |
|
Welding Line Type |
ERW |
|
Finishing Options |
A. Mirror #600 to #1000, Gloss #400B. Threaded, EmbossedC. Wood GrainD. BrushedE. Sanded |
|
Industrial Uses |
Construction, Decoration, Food industry, etc. |
|
Certificates |
SGS, ISO |
|
Round Pipe Sizes (mm) |
89, 17, 76.2, 31.8, 38.1, 50.8, 101, 36, 21, 23, 28, 60, 114, 63.5, 20, 22, 18, 35, 25, 19, 16, 48 |
|
Square Pipe Sizes (mm) |
17, 20, 36, 21, 25, 50, 23, 28, 38, 30, 19, 18, 22, 24 |
|
Rectangular Pipe Sizes (mm) |
10×40, 10×30, 20×10, 10×50, 24×12, 23×11, 28×25, 25×13, 29×14, 28×13, 30×20, 30×15, 34×22, 30×22, 50×25, 36×23, 75×45, 60×30, 95×45 |
|
Exact Thickness Options (mm) |
0.28, 1.15, 0.71, 1.41, 1.11, 0.32, 0.25, 0.51, 0.91, 0.37, 0.41, 0.61 |
|
Outer Diameter (OD) |
6.35 to 219 mm |
|
Tolerance (General) |
Length: ±0.5 mmOD: ±0.2 mmThickness: ±0.02 mm |
|
Processing Method |
Annealed with nitrogen protection, Cold drawn, Automatic shaping, Ultrasonic testing, Polished |
|
Testing Conducted |
Magnetic particle detection, Hydrostatic testing, Direct-reading spectrograph, Ultrasonic flaw detection, X-ray inspection |
|
Machinery Used |
Bending machine, Press machine, Sand-blasting machine, Electric bevelling machine, Pushing machine |
|
Origin |
Japan, West Europe, USA, India, Korea, Europe |
|
Test Certificates |
Raw Material Certificate, EN 10204 / 3.1B Manufacturer Test Certificate, Third Party Inspection Report, 100% Radiography Test Report |
Selecting 254 SMO Pipes & Tubes with the right technical specifications ensures optimum performance in high chloride, marine, chemical processing, and desalination applications. At USA Piping Solutions, we not only supply 254 SMO pipe and 254 SMO tube in standard sizes but also provide custom manufacturing, testing, and certification to meet project-specific requirements for industries worldwide.
Price List – ASTM A213 UNS S31254 / 254 SMO Seamless Tubes in USA
At USA Piping Solutions, we offer competitive prices for ASTM A213 UNS S31254 Seamless Tubes, also known as 254 SMO Tubes or Alloy 254 Tubing. Prices may vary depending on size, wall thickness, manufacturing type (seamless or welded), finish, and order quantity. Below is an indicative price range for different product types, suitable for bulk industrial procurement.
|
Description |
Price Range |
|---|---|
|
UNS S31254 Tubes / Tubings (254 SMO, 1.4547, 254SMO) |
US $1 / Piece |
|
254 SMO Tubing – S31254 Seamless Tubing |
US $5.85 – 11.85 / kg |
|
UNS S31254 Seamless Stainless Steel Tube (254 SMO, 1.4547, 254SMO) |
US $4.85 – 11.85 / kg |
|
Welded / Seamless High Quality SMO 254 Bright Seamless Stainless Steel Tube |
US $3000 – 3500 / Ton |
|
6Mo Alloy Stainless Steel Seamless Tube |
US $6.35 – 15.2 / kg |
|
Seamless 254 SMO Large Diameter Stainless Steel Tube |
US $600 – 1000 / Ton |
|
(X1CrNiMoN20-18-7) 254 SMO Stainless Steel Tube |
US $2000 – 5000 / Ton |
|
1.4547 S31254 Super Austenitic Stainless Steel Tube |
US $2000 – 5000 / Ton |
|
Nickel-Based Alloy 254 SMO / S31254 Stainless Steel Tube |
US $2000 – 5000 / Ton |
Prices are indicative and subject to change based on material availability, market demand, and order quantity. Customization, special coatings, and additional testing will be quoted separately. For bulk orders, project-based pricing and export packaging are available.
254 SMO Tube Size Chart
At USA Piping Solutions, we supply 254 SMO Tubes in a wide range of wall thicknesses and outside diameters to meet the precise requirements of industrial, marine, chemical processing, and high-performance engineering applications. These tubes, also known as Alloy 254 Tubes or UNS S31254 Tubes, are available in both seamless and welded forms, with exact dimensions that comply with ASTM A213 and related standards.
The chart below details the available 254 SMO Tube sizes along with their corresponding wall thickness. This ensures our clients can select the most suitable 254 SMO Pipes & Tubes for their specific operational needs.
|
Wall Thickness (inches) |
254 SMO Tube Sizes (Outside Diameter) |
|---|---|
|
0.010 |
1/16", 1/8", 3/16" |
|
0.020 |
1/16", 1/8", 3/16", 1/4", 5/16", 3/8" |
|
0.012 |
1/8" |
|
0.016 |
1/8", 3/16" |
|
0.028 |
1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 3/4", 1", 1 1/2", 2" |
|
0.035 |
1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4" |
|
0.049 |
3/16", 1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4" |
|
0.065 |
1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3" |
|
0.083 |
1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 7/8", 2", 2 1/2", 3" |
|
0.095 |
1/2", 5/8", 1", 1 1/4", 1 1/2", 2" |
|
0.109 |
1/2", 3/4", 1", 1 1/4", 1 1/2", 2" |
|
0.120 |
1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 2", 2 1/4", 2 1/2", 3" |
|
0.125 |
3/4", 1", 1 1/4", 1 1/2", 2", 3", 3 1/4" |
|
0.134 |
1" |
|
0.250 |
3" |
|
0.375 |
3 1/2" |
By referring to this 254 SMO Tube size chart, buyers can choose the exact combination of wall thickness and outer diameter required for their project. This ensures proper pressure handling, corrosion resistance, and mechanical strength in critical environments like desalination plants, offshore platforms, pulp & paper processing, and chemical industries.
254 SMO Seamless Tube – Mechanical Properties
USA Piping Solutions supplies 254 SMO Seamless Tubes (UNS S31254, Alloy 254, 1.4547) designed for exceptional performance in high-corrosion and high-strength applications. These tubes combine superior mechanical strength, ductility, and impact resistance with excellent resistance to chloride-induced stress corrosion cracking.
The table below lists the mechanical properties of 254 SMO Seamless Tubes, which make them a preferred choice for industries like chemical processing, desalination, pulp and paper, and offshore engineering.
Mechanical Properties – ASTM A213 UNS S31254 / 254 SMO Seamless Tubes
|
Property |
Value |
|---|---|
|
Melting Point |
1320 – 1390 ℃ |
|
Density |
8.0 g/cm³ |
|
Yield Strength (0.2% Offset) |
300 MPa |
|
Tensile Strength |
650 MPa |
|
Elongation |
35% |
The mechanical properties of 254 SMO Seamless Tubes ensure outstanding performance in demanding conditions:
- High Tensile and Yield Strength – suitable for high-pressure systems.
- Excellent Elongation – offers flexibility and prevents brittle failure.
- High Melting Point – ideal for elevated-temperature service.
- Superior Density and Corrosion Resistance – ensures durability in seawater and chemical environments.
SS 254 SMO Tubing – Chemical Composition
USA Piping Solutions supplies SS 254 SMO Tubes (UNS S31254, Alloy 254, 1.4547) manufactured to strict ASTM and ASME standards. This super austenitic stainless steel is specially alloyed with high chromium, nickel, molybdenum, and nitrogen content, delivering exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking.
The table below details the chemical composition of 254 SMO Tubing, specifying both minimum and maximum content percentages for each element.
Chemical Composition – ASTM A213 UNS S31254 / SS 254 SMO Tubes
|
Element |
% Minimum |
% Maximum |
|---|---|---|
|
Chromium (Cr) |
19.5 |
20.5 |
|
Nickel (Ni) |
17.5 |
18.5 |
|
Copper (Cu) |
0.5 |
1.0 |
|
Molybdenum (Mo) |
6.0 |
6.5 |
|
Carbon (C) |
– |
0.02 |
|
Phosphorus (P) |
– |
0.03 |
|
Nitrogen (N) |
0.18 |
0.22 |
|
Sulfur (S) |
– |
0.01 |
|
Silicon (Si) |
– |
0.8 |
|
Manganese (Mn) |
– |
1.0 |
The balanced chemistry of 254 SMO Tubing provides High corrosion resistance in chloride-rich and acidic environments. Superior mechanical strength while maintaining ductility. Long service life in seawater, desalination, pulp & paper, and chemical industries.
Alloy 254 Tube – Equivalent Standards
USA Piping Solutions offers Alloy 254 Tubes (also known as 254 SMO Tubes or UNS S31254 Tubes) that comply with major international standards, ensuring global compatibility for industrial projects. The table below lists the equivalent grades and standards for SS 254 SMO Tubing, making it easier for engineers, procurement teams, and project managers to match specifications across different regions.
Equivalent Grades – ASTM A213 UNS S31254 / Alloy 254 Tubes
|
Standard |
Werkstoff Nr. |
UNS |
EN |
AFNOR |
BS |
JIS |
GOST |
|---|---|---|---|---|---|---|---|
|
SMO 254 |
1.4547 |
S31254 |
X1CrNiMoCuN20-18-7 |
Z1 CNDU 20.18.06Az |
– |
2378 |
– |
Using the correct 254 SMO equivalent grade ensures Material compatibility in global procurement. Compliance with regional and international standards. Ease of substitution when sourcing from multiple countries.
Weight Chart – SMO 254 Pipes & Tubes
USA Piping Solutions supplies SMO 254 Pipes & Tubes (UNS S31254, Alloy 254, 1.4547) in a wide range of nominal pipe sizes (NPS), wall thicknesses, and schedules. Knowing the weight per meter (kg/m) or per foot (lb/ft) is essential for accurate material estimation, shipping calculations, and structural load planning.
The table below provides a comprehensive SMO 254 pipe weight chart covering outside diameter, wall thickness, and corresponding weights for both metric and imperial units.
SMO 254 Pipes & Tubes – NPS, Dimensions & Weight
|
NPS |
Outside Diameter |
Wall Thickness |
Weight (kg/m) |
Weight (lb/ft) |
|---|---|---|---|---|
|
1/2″ |
21 mm (0.840 in) |
2.769 mm (0.109 in) – 40 STD |
1.268 |
0.851 |
|
3.734 mm (0.147 in) – 80 STD |
1.621 |
1.088 |
||
|
3/4″ |
27 mm (1.050 in) |
2.870 mm (0.113 in) – 40 STD |
1.684 |
1.131 |
|
3.912 mm (0.154 in) – 80 STD |
2.195 |
1.474 |
||
|
1″ |
33 mm (1.315 in) |
3.378 mm (0.133 in) – 40 STD |
2.501 |
1.679 |
|
4.547 mm (0.179 in) – 80 STD |
3.325 |
2.172 |
||
|
1 1/4″ |
42 mm (1.660 in) |
3.556 mm (0.140 in) – 40 STD |
3.385 |
2.273 |
|
4.851 mm (0.191 in) – 80 STD |
4.464 |
2.997 |
||
|
1 1/2″ |
48 mm (1.900 in) |
3.683 mm (0.145 in) – 40 STD |
4.048 |
2.718 |
|
5.080 mm (0.200 in) – 80 STD |
5.409 |
3.361 |
||
|
2″ |
60 mm (2.375 in) |
3.912 mm (0.154 in) – 40 STD |
5.441 |
3.653 |
|
5.537 mm (0.218 in) – 80 STD |
7.480 |
5.022 |
||
|
2 1/2″ |
73 mm (2.875 in) |
5.516 mm (0.203 in) – 40 STD |
8.629 |
5.793 |
|
7.010 mm (0.276 in) – 80 STD |
11.411 |
7.661 |
||
|
3″ |
89 mm (3.500 in) |
5.486 mm (0.216 in) – 40 STD |
11.284 |
7.576 |
|
7.620 mm (0.300 in) – 80 STD |
15.272 |
10.253 |
||
|
4″ |
114 mm (4.500 in) |
6.020 mm (0.237 in) |
16.073 |
10.790 |
|
8.560 mm (0.337 in) |
22.318 |
14.983 |
||
|
6″ |
168 mm (6.625 in) |
4.775 mm (0.188 in) |
19.252 |
12.924 |
|
12.700 mm (0.500 in) |
48.719 |
32.708 |
||
|
8″ |
219 mm (8.625 in) |
4.775 mm (0.188 in) |
25.233 |
16.940 |
|
12.700 mm (0.500 in) |
64.627 |
43.388 |
||
|
10″ |
273 mm (10.750 in) |
4.775 mm (0.188 in) |
31.588 |
21.207 |
|
15.088 mm (0.594 in) |
95.969 |
64.429 |
||
|
12″ |
324 mm (12.750 in) |
4.775 mm (0.188 in) |
37.570 |
25.222 |
|
14.275 mm (0.562 in) |
108.966 |
73.154 |
||
|
14″ |
356 mm (14.000 in) |
4.775 mm (0.188 in) |
41.308 |
27.732 |
|
15.875 mm (0.625 in) |
132.983 |
89.278 |
||
|
16″ |
406 mm (16.000 in) |
4.775 mm (0.188 in) |
47.290 |
31.748 |
|
15.875 mm (0.625 in) |
123.289 |
82.770 |
||
|
18″ |
457 mm (18.000 in) |
5.563 mm (0.219 in) |
61.948 |
41.588 |
|
15.875 mm (0.625 in) |
172.754 |
115.978 |
||
|
20″ |
508 mm (20.000 in) |
6.350 mm (0.250 in) |
78.547 |
52.733 |
|
17.475 mm (0.688 in) |
211.368 |
141.901 |
||
|
24″ |
610 mm (24.000 in) |
6.350 mm (0.250 in) |
94.456 |
63.413 |
|
19.050 mm (0.750 in) |
277.401 |
186.233 |
||
|
30″ |
762 mm (30.000 in) |
6.350 mm (0.250 in) |
118.318 |
79.433 |
|
19.050 mm (0.750 in) |
348.988 |
234.293 |
||
|
36″ |
914 mm (36.000 in) |
6.350 mm (0.250 in) |
142.180 |
95.453 |
|
19.050 mm (0.750 in) |
420.576 |
282.353 |
||
|
42″ |
1067 mm (42.000 in) |
7.925 mm (0.312 in) |
206.914 |
138.911 |
|
19.050 mm (0.750 in) |
492.163 |
330.413 |
||
|
48″ |
1219 mm (48.000 in) |
9.525 mm (0.375 in) |
284.112 |
190.738 |
|
22.225 mm (0.875 in) |
655.969 |
440.383 |
Out Diameter of Alloy 254 High Pressure Tubes
USA Piping Solutions offers Alloy 254 Tubes (also known as 254 SMO Tubes or UNS S31254 Tubes) in a variety of outside diameters (OD), wall thicknesses, and lengths to meet high-pressure application requirements. We supply both seamless and welded tube types in standard NB sizes as well as custom dimensions, ensuring compatibility with demanding industries like offshore oil & gas, chemical processing, desalination, and marine engineering.
The table below provides details on the outside diameter range, wall thickness, and lengths available for different types of 254 SMO Tubes.
|
Type of 254 SMO Tube |
Outside Diameter (OD) |
Wall Thickness |
Length |
|---|---|---|---|
|
NB Sizes (In Stock) |
1/8” ~ 8” |
SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 |
Up to 6 Meters |
|
254 SMO Seamless Tube (Custom Sizes) |
5.0 mm ~ 203.2 mm |
As per requirement |
Up to 6 Meters |
|
254 SMO Welded Tube (In Stock + Custom Sizes) |
5.0 mm ~ 1219.2 mm |
1.0 mm ~ 15.0 mm |
Up to 6 Meters |
Selecting the right outside diameter for Alloy 254 Tubes ensures proper pressure handling, optimal flow capacity, and seamless compatibility with fittings, flanges, and connectors in high-performance systems.
DIN 1.4547 Welded Tubes – Pressure Rating
USA Piping Solutions supplies DIN 1.4547 Welded Tubes (254 SMO, UNS S31254) engineered for high strength and exceptional corrosion resistance in demanding environments. The working pressure rating depends on tube outside diameter (OD) and wall thickness (WT), ensuring safe operation in high-pressure applications such as offshore oil & gas, desalination, and chemical processing systems.
|
Tube OD (inches) |
WT .035 |
WT .083 |
WT .065 |
WT .049 |
WT .109 |
WT .095 |
WT .028 |
WT .120 |
|---|---|---|---|---|---|---|---|---|
|
3/8" |
3100 |
– |
6100 |
4400 |
– |
– |
– |
– |
|
1/8" |
10100 |
– |
– |
– |
– |
– |
– |
7900 |
|
5/16" |
3700 |
– |
7300 |
5400 |
– |
– |
– |
– |
|
1" |
– |
2900 |
2200 |
– |
3900 |
3400 |
– |
4300 |
|
1/4" |
4800 |
– |
9500 |
7000 |
– |
– |
3700 |
– |
|
1/2" |
2300 |
– |
4400 |
3200 |
– |
– |
– |
– |
|
3/4" |
– |
4000 |
3000 |
2200 |
– |
4600 |
– |
– |
Note:All pressures are in psig and represent working pressure limits under standard conditions.
SMO 254 Pipes & Tubes – Surface Finish
USA Piping Solutions supplies SMO 254 Pipes & Tubes with multiple surface finish options to meet industry-specific requirements. Surface roughness is a key factor in determining tube performance in hygienic, high-pressure, and corrosion-resistant applications such as food processing, pharmaceuticals, and chemical industries.
The table below details the external (OD) and internal (ID) surface roughness averages (RA) for different SMO 254 tube finishing processes.
|
Surface Finish |
Description |
External Surface (OD)Roughness Average (RA) |
Internal Surface (ID)Roughness Average (RA) |
|---|---|---|---|
|
BA – Bright Annealed |
Smooth, reflective surface produced by heat treatment in a controlled atmosphere |
0.8 μm / 32 μin |
1.0, 0.6, 0.8, 0.5 μm / 32, 40, 20, 25 μin |
|
EP – Electro Polished |
Ultra-smooth surface achieved via electrochemical polishing for superior cleanliness |
0.8 μm / 32 μin |
0.25, 0.38, 0.13, 0.20 μm / 10, 7, 15, 5 μin |
|
AP – Annealed & Pickled |
Oxide scale removed through pickling; surface roughness may vary |
1.0 μm or Not Defined / 40 μin or Not Defined |
Not Defined |
|
MP – Mechanical Polish |
Smooth finish obtained through mechanical polishing techniques |
0.8 μm / 32 μin |
0.8, 1.0, 0.5, 0.6 μm / 32, 40, 20, 25 μin |
Frequently Asked Questions – SMO 254 Pipes & Tubes
Related Products
Our expertise extends beyond SMO 254. USA Piping Solution is also your source for a comprehensive range of other high-performance and corrosion-resistant piping materials. Consider us for:
Matching SMO 254 Fittings, Flanges, and Bar Stock
To complete your system requirements
Our Products
Application Industries
Boilers
Heat Exchangers
Power Plants
Steam Piping
Refineries
Drop us a line
We respects customer privacy and ensures absolute confidentiality of any information that is given to us.
