ASME SA213 TP304L Stainless Steel Tube ASTM A213 TP304L Stainless Steel Tube

Guanyu Tube is Specialized manufacturer of ASTM A213 TP304L and ASME SA213 TP304L Stainless Steel Tubes in China.

ASME SA213 TP304L Stainless Steel Tube is a variation of the 18% chromium – 8% nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family.

• Corrosion Resistance: Excellent resistance to oxidation, pitting, and general corrosion in acidic/chloride environments.
• High-Temperature Performance: Suitable for service up to 816°C (1,500°F) due to stabilized austenitic structure.
• Low Carbon Content: Max 0.03% carbon minimizes carbide precipitation during welding (reduces sensitization risk).
• Non-Magnetic: Austenitic structure ensures non-magnetic properties in annealed condition.
• Formability & Weldability: Good ductility and compatibility with common welding techniques.

Precautions for Use of ASME SA213 TP304L

1. Avoid Sensitization: Prolonged exposure to 450–850°C (842–1,562°F) may cause carbide precipitation.
2. Stress Corrosion Cracking (SCC): Avoid chloride-rich environments above 60°C (140°F).
3. Welding: Use low-carbon filler (e.g., ER308L) and control interpass temperature (<150°C).
4. Cleaning: Remove iron contamination to prevent localized corrosion.
5. Inspection: Regularly check for pitting or crevice corrosion in aggressive media.

Benefits of using 304L Stainless Steel Tube

• Low carbon content eliminates carbon precipitation in the welding process
• Can be used in severe corrosive environments
• Weld annealing only required in high stress applications
• Very similar to Type 304

Testing Items & Requirements

Heat Treatment Requirements

Referenced Documents

1 Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.10 on Stainless and Alloy Steel Tubular Products. Current edition approved April 1, 2009. Published April 2009. Originally approved in 1939. Last previous edition approved in 2009 as A 213/A 213M – 09.

2 For ASME Boiler and Pressure Vessel Code applications see related Specification SA-213 in Section II of that Code.

ASTM A262 Practices for Detecting Susceptibility to Intergranu lar Attack in Austenitic Stainless Steel
A 941 Terminology Relating to Steel, Stainless Steel, Re lated Alloys, and Ferroalloys
A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
ASTM E112 Test Methods for Determining Average Grain Size

Nominal Pipe Size (NPS): 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2 inch
Outside Diameter: 10,3 – 73 mm (0,405 – 2,875 inch)
Wall Thickness: 1,24 – 7,01 (0,049 – 0,276 inch)

Tensile Requirements

Flattening Test

One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.

Flaring Test

One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.

Hydrostatic or Nondestructive Testing

Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test, the type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

Markings

Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer’s private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.

Note:

• Mill test certificates will be issued according to EN10204 3.1 and EN 10204 3.2
• All tubes shall be supplied as per applicable ASTM A213 /A213M Specification.

Notes:

1. Steel Grades – TP 304, TP 304L, TP 316, TP 316L, TP 321
2. Technical requirements acc. to ASTM A 450.
3. Size of pipes in accordance with ANSI/ASME B36.19M.
4. The quality of pipes is ensured by manufacturing process and non-destructive test.
5. Hardness of metal not less than 100 HB.
6. Length tolerance of measured pipes not greater than +10 mm.
7. Monitoring of continuity of metal by pneumotest with pressure of 6 bar is available.
8. Intergranular corrosion test in accordance with ASTM A262, Practice E is available.