What is ASTM A312 TP304L Stainless Steel Pipe?
ASTM A312 covers TP304 (UNS S30400), an austenitic grade with 18-20% chromium and 8-11% nickel for excellent corrosion resistance in general environments. These pipes suit high-temperature applications up to 1900°F (1040°C) after solution annealing. Production includes seamless, straight-seam welded, or cold-worked methods per ASME B36.19 dimensions.
Standard
ASTM A312 / ASME SA312
Grade
TP304L
UNS
S30403
EN
1.4307
ASTM A312 TP304L Pipe Specification
| Product Type : | Stainless Steel Pipe |
| Grade : | TP304L |
| Manufacturing Type : | Seamless / Welded |
| Certification : | EN 10204 3.1 / 3.2 MTC |
| Dimensional Standards | ASME B36.19M / ASME B36.10M |
| Nominal Pipe Size (NPS) | 1/8″ to 30″ (DN6 to DN750) |
| Standard Length | 6 meters, 12 meters, custom cut lengths |
| End Types | Plain End (PE), Beveled End (BE), Threaded |
| Testing | Hydrostatic Test, PMI, NDT (UT/RT), Third Party Inspection |
| Country Supply | India & Global Export |
All specifications are in accordance of ASTM A312 / ASME SA312 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition of TP304L Stainless Steel
| Element | Max (%) |
|---|---|
| Carbon (C) | 0.030 |
| Manganese (Mn) | 2.00 |
| Phosphorus (P) | 0.045 |
| Sulfur (S) | 0.030 |
| Silicon (Si) | 1.00 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 12.0 |
| Iron (Fe) | Balance |
Mechanical Properties of 304L Stainless Steel Pipe
| Property | Minimum Value |
|---|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness | ~ 90 HRB (approx.) |
Available Sizes & Dimensions
- Dimensional Standards :ASME B36.19M / ASME B36.10M
- Schedules Available : SCH 5S, 10S, 20, 40S, 80S, 80, 160, XS, XXS
- End Types: Plain End (PE), Beveled End (BE), Threaded
- Surface Finish 2B, No.1, No.4, Mirror Finish, Pickled & Annealed
Applications of TP304L Stainless Steel Pipes
- Chemical & petrochemical pipelines
- Oil & gas pipelines
- Power plants & refineries
- Food & pharmaceutical piping
- Heat exchangers & boilers
- Water treatment systems
304L is preferred where welding is extensive and corrosion resistance after welding is critical.
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Key Advantages of Applications of TP304L Stainless Steel Pipes
Excellent corrosion resistance
High strength and ductility
Good weldability
Long service life
International standard compliance