HomeProducts & servicesTP309 Seamless Stainless Steel Pipe

TP309 Seamless Stainless Steel Pipe

TP309 Seamless Stainless Steel Pipe are high-performance tubing solutions designed for superior heat and corrosion resistance in demanding environments.
① STANDARD: ASTM A312/ ASTM A249/ ASTM A269/ EN10216-5/GOST 9940 /GOST 9941...

② OD RANGE : 6-1016 MM

③ THICKNESS RANGE: 1-65 MM

TP309/TP309S/TP309H(UNS30900) Chemical Composition

Grade

C

SI

Mn

Cr

Ni

P

S

Fe

309

≤0.20

≤0.75

≤2.00

22.00-24.00

12.00-15.00

≤0.045

≤0.03

Balance

TP309S

≤0.08

≤0.75

≤2.00

22.00-24.00

12.00-15.00

≤0.045

≤0.03

Balance

TP309H

0.04-0.10

≤0.75

≤2.00

22.00-24.00

12.00-15.00

≤0.045

≤0.03

Balance

TP309/TP309S/TP309H(UNS30900) Mechanical Properties

Grade

Tensile Strength Ksi(Mpa)

Yield Strength Ksi(Mpa)

Elongation in 50 mm%

Hardness Brinell/Vickers

Hardness Rockwell

TP309S

≥75(515)

≥30(205)

≥35

≤192HBW/200HV

≤90HRB

TP309H

≥75(515)

≥30(205)

≥35

≤192HBW/200HV

≤90HRB

TP309/TP309S/TP309H(UNS30900) Applications

    1. Boiler Components:
      • 309 stainless steel pipes are commonly used in boiler parts due to their high-temperature resistance and excellent corrosion resistance.
      • These pipes withstand harsh conditions in boiler systems.
    2. Flue Gas Desulfurization (FGD) Systems:
      • In FGD systems, which remove sulfur dioxide from flue gases, 309 stainless steel pipes are essential.
      • Their resistance to oxidation and high temperatures makes them suitable for this application.
    3. Industrial Furnaces:
      • 309 stainless steel pipes are employed in industrial furnaces for components like burners, retorts, and conveyor belts.
      • Their ability to withstand elevated temperatures ensures reliable performance.
    4. Automotive Exhaust Systems:
      • Due to their corrosion resistance and strength, 309 stainless steel pipes are used in automotive exhaust systems.
      • They handle high temperatures and exposure to corrosive gases.
    5. Cryogenic Applications:
      • Industries dealing with cryogenic environments benefit from 309 stainless steel pipes.
      • Their mechanical properties remain stable at extremely low temperatures.
    6. Food Processing and Pulp & Paper Industry:
      • 309 stainless steel pipes are suitable for food processing equipment and pulp & paper applications.
      • Their durability and resistance to corrosion are advantageous.

    In summary, UNS S30900 pipes offer reliable strength and durability in challenging environments across various industries!


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
  • ......

TP309/TP309S/TP309H(UNS30900) Material Summary

TP309 Stainless Steel Tubing are austenitic chromium-nickel ss that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. The lower nickel content of 309 tubes improves resistance to sulfur attack at high temperatures. The high chromium and nickel content of SUS 309 Pipe & tubes provides comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than the common austenitic 304.

The steel resists oxidation up to 1900°F (1038°C) under non-cyclic conditions
Because of its high chromium and low nickel content, 309 can be utilized in sulfur containing atmospheres up to 1832°F (1000°C). The steel is not recommended for use in highly carburizing atmospheres since it exhibits only moderate resistance to carbon absorption. 309 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced.

Related Products

Seamless TP317LMn Stainless Steel Pipe

TP317LMn Seamless Stainless Steel Pipe is a high-performance, low-carbon, austenitic stainless steel pipe with increased levels of Molybdenum (Mo) and Nitrogen (N). This composition enhances its corrosion resistance and mechanical strength, particularly when compared to standard grades like 316L and 317L.
It is typically manufactured to specifications such as ASTM A312/ASME SA312 for seamless pipe intended for high-temperature and general corrosive service, with the grade designation TP317LMn or UNS S31726.

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

② OD RANGE : 6-762MM

③ THICKNESS RANGE: 1-65 MM

254SMO Seamless Stainless Steel Pipe

254SMO Seamless Stainless Steel Pipe 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 A312/ ASTM A249/ ASTM A269/EN10216-5/ GOST 9940 /GOST 9941...

② OD RANGE : 6-960MM

③ THICKNESS RANGE: 1-65 MM

TP347H Seamless Stainless Steel Pipe

TP347H Seamless Stainless Steel Pipe are high-performance austenitic stainless steel tubes stabilised with niobium, specifically designed for elevated temperature applications and enhanced creep resistance.
① STANDARD: ASTM A312/ ASTM A249/ ASTM A269/ EN10216-5/GOST 9940 /GOST 9941...

② OD RANGE : 6-1016 MM

③ THICKNESS RANGE: 1-65 MM

TP310MOLN/S31050 Seamless Stainless Steel Tube

TP310MOLN/S31050 Seamless Stainless Steel Tube ,310MoLN stainless steel, also known as UNS S31050, is a fully austenitic stainless steel with optimized properties for specific applications. Let’s explore its characteristics and where it finds use in various industries:

Urea Plants:
310MoLN is specifically designed for applications in urea plants.
It provides improved corrosion resistance in urea carbamate environments, such as high-pressure strippers.
The nitrogen content in its chemical composition helps stabilize and strengthen the austenitic phase.
Chemical Processing:
Due to its excellent corrosion resistance, 310MoLN is used in chemical processing equipment.
It performs well in aggressive chemical environments, including acids and chlorides.
High-Temperature Applications:
310MoLN is suitable for high-temperature environments.
It finds use in furnace components, such as burners, retorts, and conveyor belts.
Petrochemical Industry:
In petrochemical plants, 310MoLN is employed for tube hangers.
Its resistance to oxidation and high-temperature strength are advantageous.
Mineral Equipment and Cement Production:
Used in mineral processing equipment and cement production due to its high strength at elevated temperatures.
Remember that 310MoLN stainless steel offers a unique combination of properties, making it valuable in critical applications.
① STANDARD: ASTM A213/ ASTM A249/ ASTM A269/EN10216-5/ GOST 9940 /GOST 9941...

② OD RANGE : 6-257MM

③ THICKNESS RANGE: 1-35 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.