Austenitic Stainless Steel Tubing ASTM A269 TP304L, Used For General Corrosive-Resisting Service
Austenitic Stainless Steel Tubing ASTM A269 TP304L, Used For General Corrosive-Resisting Service
Introduction of A269 TP304L Austenitic Stainless Steel Tubing
ASTM A269 TP304L is a standard specification for seamless and welded austenitic stainless steel tubing, primarily used for ''general corrosive-resisting service'' and applications involving low or high temperatures.
Manufactured from ''TP304L grade'' (UNS S30403), this tubing is characterized by its low carbon content (maximum 0.035%), which significantly minimizes the risk of ''intergranular corrosion'' after welding or exposure to elevated temperatures. It offers excellent formability, good weldability, and robust mechanical properties, making it a versatile choice for transporting corrosive fluids and gases where material integrity and longevity are critical.
Commonly supplied in cold-finished conditions with either bright annealed (BA) or pickled (AP) finishes, it is widely utilized in industries such as chemical processing, petrochemical, food and beverage, and instrumentation.
Chemical Composition of A269 TP304L Stainless Steel Seamless Tube
|
Weight % |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
TP304L |
0.035
|
2.00 |
0.045
|
0.030
|
1.00
|
18.0-20.0
|
8.0-13.0
|
Mechanical Property of A269 TP304L Stainless Steel Seamless Tubes
TP304L |
Tensile Strength |
Yield Strength |
Elongation |
Hardness (HRB) |
≥ 485 MPa |
≥ 170 MPa |
≥ 40% |
≤ 92 |
Physical Properties of A269 TP304L Stainless Steel Seamless Tubes
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
TP304L |
8000 |
193 |
17.2 |
17.8 |
18.4 |
16.2 |
21.5 |
500 |
720 |
Application on A269 TP304L Stainless Steel Seamless Tubes
-
Petrochemical, Oil & Gas
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Refinery process piping
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Oil and gas transport lines
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Subsea control lines
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LNG and fertilizer terminals
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Chemical & Industrial Processing
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Heat exchangers and condensers
-
Chemical piping for mild corrosives
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Pulp and paper industry equipment
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Instrumentation & Hydraulics
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Impulse and signal transmission lines
-
Hydraulic and pneumatic systems
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Analyzer and sampling lines
-
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Food, Beverage & Pharmaceutical
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Sanitary process lines
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Dairy and food processing equipment
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Biotech and pharmaceutical piping
-
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General Engineering & Power
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Boilers and pressure vessels
-
Power generation (nuclear, thermal)
-
Automotive and medical components
-
Architectural and structural uses
-
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