Seamless Stainless Steel TP304L |UNS S30403|1.4307 Tube
Due to its minimized carbon content, our TP304L tubing offers superior intergranular corrosion resistance, making it the ideal choice for heavy-gauge welded components in chemical processing, cryogenic applications, and pharmaceutical systems. Through advanced cold-drawing and bright annealing processes, Tengqi guarantees tight dimensional tolerances and a superior surface finish. Rely on our expertise for certified stainless steel solutions that deliver long-lasting durability in the most demanding corrosive environments.
Seamless Stainless Steel TP304L Tube (TP304L / UNS S30403 / W.Nr. 1.4307) is the low-carbon version of 304, eliminating intergranular corrosion after welding without post-weld annealing. Manufactured by Tengqi in Fujian, China, every heat is fully traceable, hydro-tested and available with third-party inspection (SGS / BV / TUV) on request.
Product Specifications
- ASTM A213 / ASME SA213 — Seamless
- ASTM A269 / A269M — Seamless & Welded
- ASTM A270 / A270M — Sanitary Tubing
- ASTM A1016 / A1016M — General Requirements
- EN 10216-5 — Seamless Pressure Tubing
- Finishing: solution annealed, pickled & polished; bright annealed available on request
Size Range
| Outside Diameter (OD) | Wall Thickness | Length |
|---|---|---|
| 6.35 mm – 257 mm (1/4"– 10.1") | 0.5 mm – 12.7 mm | ≤ 22 m |
Chemical Composition
TP304L (UNS S30403) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni |
|---|---|---|---|---|---|---|---|
| S30403 | ≤ 0.035 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | ≤ 1.00 | 18.0 – 20.0 | 8.0 – 12.0 |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed, pickled & polished |
| Tensile Strength | ≥ 485 MPa |
| Yield Strength (0.2% offset) | ≥ 170 MPa |
| Elongation in 2 in. / 50 mm | ≥ 35% |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm3 |
| Thermal Conductivity | 16.2 W/m·K |
| Specific Heat Capacity | 500 J/kg·K |
| Elastic Modulus | 193 GPa |
| Magnetic Properties | Non-magnetic (slightly magnetic when cold worked) |
| PREN (Pitting Resistance Equivalent) | 18.0-20.0 |
Industry Applications
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CONTACT US
Lidun Industrial Park, Lidun Town, Zhouning County, Ningde City, Fujian Province，355400，China
+86-577-88877003
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+86-577-88877019
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