Overview of Bright Annealed A213 TP304L Stainless Steel Seamless Tube
Bright Annealed A213 TP304L seamless tubes are high-quality, austenitic stainless steel tubes manufactured to ASTM A213 specifications. Made from TP304L, a low-carbon variant of 304 stainless steel, these tubes are cold-drawn and bright annealed in a controlled atmosphere to achieve a smooth, reflective, oxide-free surface finish.
The bright annealing process enhances corrosion resistance, cleanliness, and dimensional precision, making these tubes ideal for heat exchangers, condensers, instrumentation lines, and high-purity applications in industries like, food processing, and petrochemicals.
Advantages of A213 TP304L BA Tube:
· Superior corrosion resistance
· High dimensional accuracy
· Hygienic and easy to clean
· Suitable for high-temperature service
Technical Parameters and Specifications
| Parameter Category | Range/Requirement |
|---|---|
| Outer Diameter | 3.175mm~42mm (1/8"~1.5") |
| Wall Thickness | 0.45mm~3.0mm (Tolerance ±10%) |
| Length | 3m/6m (fixed-length), customizable |
| Pressure Capacity | 80~180 MPa |
| Applicable Standards | ASTM A213/A269, ASME BPE, JIS G3459, etc. |
Chemical Composition of SS304L (UNS S30403)
|
Element |
Content (%) |
|---|---|
|
Carbon (C) |
≤ 0.035 |
|
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 |
|
Nitrogen (N) |
≤ 0.10 |
|
Iron (Fe) |
Balance |
Mechanical Properties of SS304L (UNS S30403)
|
Property |
Value |
|---|---|
|
Tensile Strength (min) |
485 MPa (70 ksi) |
|
Yield Strength (min) |
170 MPa (25 ksi) |
|
Elongation (min) |
35% |
|
Hardness (max) |
90 HRB (Rockwell B) |
|
Modulus of Elasticity |
~193 GPa (28 × 10⁶ psi) |
|
Density |
8.0 g/cm³ |
|
Melting Point |
~1400–1450 °C (2550–2640 °F) |
Typical Applications
· Heat exchangers and condensers
· Food, beverage
· Instrumentation and control tubing
· Ultra-high-purity gas and fluid transfer systems
