HomeProducts & services 254SMO Seamless Stainless Steel Tube

254SMO Seamless Stainless Steel Tube

254SMO Seamless Stainless Steel Tube is a high-performance tubing solution designed for extreme environments, offering exceptional resistance to corrosion, pitting, and acidic conditions—ideal for marine, chemical, and offshore applications.
① STANDARD: ASTM A213/ ASTM A249/ ASTM A269/ ASTMA270/EN10216-5/GOST 9940 /GOST 9941...

② OD RANGE : 6-257MM

③ THICKNESS RANGE: 1-35 MM

254SMO/1.4547/S31254/X1CrNiMoCuN20-18-7 Chemical Composition

Grade

C

SI

Mn

P

Cr

Ni

Mo

N

S

Others

254SMO

≤ 0.02

≤0.80

≤1.00

≤ 0.03

19.50-20.50

17.50-18.50

6.00-6.50

0.18-0.22

0.01

Cu 0.50-1.00

254SMO/1.4547/S31254/X1CrNiMoCuN20-18-7 Mechanical Properties

Grade

Tensile Strength

0.2 % Yield Strength Rpt

Elongation

Hardness

T#0.187”(5mm)

T>0.187”(5mm)

Brinell

Rockwell

254SMO

≥ 98ksi(675MPa)

≥ 95ksi(655MPa)

≥ 45ksi(310MPa)

≥  35%

220HBW

96HRB

254SMO/1.4547/S31254/X1CrNiMoCuN20-18-7 Applications

  • Natural and treated seawater systems, desalination plants
  • Pollution control: smelters (ducting, chimneys linings...)
  • Bleaching equipment for pulp and paper industries (washers)
  • Chemical industries: chloride containing media; phosphoric acid, sulphury acid Fine chemical production
  • Oil & Gas Exploration
  • Petrochemicals and Refineries
  • Fertilizer Plants
  • Thermal, Nuclear and Solar Power Plants
  • Aerospace
  • Pharmaceutical
  • Food and Dairy

One of our Services--Testing

  • EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
  • Raw Materials Certificate
  • 100% Radiography Test Report
  • 100% PMI
  • Heat Treatment Charts
  • Third Party Inspection Report
  • Surface roughness and size measurement
  • Manufacturer Test Certificate( Impact Testing, Flatten, Spin,Curve, Hardness, Intergranular ,Point corrosions, Grain size, ET,UT, HT...)
  • Laboratory Test Certificate from Govt. Approved Lab
  • ......

254SMO/1.4547/S31254/X1CrNiMoCuN20-18-7 Material Summary

254 SMO is an austenitic stainless steel, whose chemical base consists of high amounts of molybdenum, chromium as well as nickel. Under some circumstances, the UNS S31254 SMO Seamless Pipe is considered to be a highly economical, yet commercially viable solution to applications that are prone to corrosion. In fact, the corrosion resistance properties of 250 SMO pipe is compared to nickel alloys.

It demonstrates outstanding resistance to pitting, crevice corrosion stress cracking, and corrosion fatigue uniform corrosion. 254 SMO is substantially stronger than the common austenitic grades, with strength nearly twice that of 300 series stainless steel. It is also characterized by high ductility and impact strength.

Related Products

TP321 Seamless Stainless Steel Pipe

TP321 Seamless Stainless Steel Pipe is a titanium-stabilized austenitic tube known for their excellent resistance to intergranular corrosion and superior high-temperature strength. These tubes are ideal for applications requiring stability at elevated temperatures, such as in heat exchangers, aerospace systems, and petrochemical industries.
① STANDARD: ASTM A312/ EN10216-5/ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...

② OD RANGE : 6-1016 MM

③ THICKNESS RANGE: 1-65 MM

ASTMA213 Stainless Steel Seamless U Tube

Seamless Stainless Steel U-tube is a specific type of heat exchanger tube that is bent into a"U"shape after the manufacturing process. It is crafted from a single, solid billet of stainless steel and, like other seamless tubes, has no weld joint. This seamless construction is crucial for maintaining structural integrity and reliability, especially in high-stress and corrosive environments. The unique U-shape allows for thermal expansion and contraction, making it ideal for shell and tube heat exchangers. It enables a single-pass fluid flow on the shell side and a multi-pass flow on the tube side, maximizing heat exchange efficiency and reducing the overall footprint of the heat exchanger.

① STANDARD: ASTM A213

② OD RANGE : 6-50.8MM

③ THICKNESS RANGE: 0.5-9MM

④ U-BEND & STRAIGHT

253MA Seamless Stainless Steel Tube

253MA Seamless Stainless Steel Tube is a tube which features seamless construction, excellent heat and corrosion resistance, and long-lasting durability.
① STANDARD: ASTM A213/ EN10216-5/ ASTM A249/ ASTM A269/EN10216-5/ GOST 9940 /GOST 9941...

② OD RANGE : 6-257MM

③ THICKNESS RANGE: 1-35 MM

TP316Ti Seamless Stainless Steel Pipe

TP316Ti Seamless Stainless Steel Pipe is a high-performance tubing solutions known for their excellent resistance to corrosion, heat, and mechanical stress. These tubes are specially alloyed with titanium to enhance strength and stability at elevated temperatures, making them suitable for demanding environments.

① STANDARD: EN10216-5/ASTM A312/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...

② OD RANGE : 6-1016 MM

③ THICKNESS RANGE: 1-65 MM

Online Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at or use the following enquiry form. Our sales will contact you within 24 hours. Thank you for your interest in our products.