Seamless Nickel Alloy N08020 |UNS N08020|2.4660 Tube
Our seamless UNS N08020 tubes comply with ASTM B729 and ASME SB729 standards, offering exceptional mechanical properties in chemical processing, pharmaceutical production, and food equipment. With the addition of copper and molybdenum, our tubes provide superior pitting and chloride-ion corrosion resistance. Tengqi ensures every tube undergoes rigorous quality testing, including intergranular corrosion tests, to guarantee long-term reliability in aggressive industrial environments.
Seamless Nickel Alloy N08020 Tube (Alloy20 / UNS N08020 / W.Nr. 2.4660) is a niobium-stabilized austenitic alloy resisting sulfuric acid and chloride stress corrosion. 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
Alloy20 (UNS N08020) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | Nb | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| N08020 | ≤ 0.07 | ≤ 2.00 | ≤ 0.045 | ≤ 0.035 | ≤ 1.00 | 19.00 – 21.00 | 32.00 – 38.00 | 2.00 – 3.00 | 3.00 – 4.00 | 8×carbon-1.00 | balance |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed, pickled & polished |
| Tensile Strength | ≥ 550 MPa |
| Yield Strength (0.2% offset) | ≥ 240 MPa |
| Elongation in 2 in. / 50 mm | ≥ 30% |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.08 g/cm3 |
| Thermal Conductivity | 12.0 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) | 29.0-31.0 |
Industry Applications
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