Hastelloy B3 |UNS N10675|2.4600 Seamless Tube
Our Hastelloy B3 seamless tubes feature significantly improved thermal stability compared to Alloy B2, minimizing the risk of embrittlement during welding and fabrication. These tubes offer outstanding protection against stress-corrosion cracking (SCC), pitting, and knife-line attack in chemical processing environments involving sulfuric, phosphoric, and acetic acids. Through advanced cold-drawing and vacuum annealing, Tengqi ensures every tube maintains uniform wall thickness and a high-integrity surface finish for the most demanding pharmaceutical and petrochemical applications.
"Why choose B3 over B2? Alloy B3 maintains its excellent ductility even after exposure to intermediate temperatures during fabrication."
SeamlessHastelloy B3 Tube (HastelloyB3 / UNS N10675 / W.Nr. 2.4600) is an improved Ni-Mo alloy with better fabricability and thermal stability than B2. 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 B163 — Seamless Condenser & Heat Exchanger Tubes
- ASTM B167 / B407 / B423 — Seamless Tube
- ASTM B444 — Seamless Pipe & Tube
- ASTM B704 — Welded Tube
- ASTM B829 — General Requirements
- 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
HastelloyB3 (UNS N10675) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | Ti | Al | W | Co | Fe | V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N10675 | ≤ 0.01 | ≤ 3.0 | ≤ 0.030 | ≤ 0.010 | ≤ 0.10 | 1.0 – 3.0 | ≥ 65.0 | 27.0 – 32.0 | ≤ 0.20 | ≤ 0.20 | ≤ 0.50 | ≤ 3.0 | ≤ 3.0 | 1.0 – 3.0 | ≤ 0.20 |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed, pickled & polished |
| Tensile Strength | ≥ 760 MPa |
| Yield Strength (0.2% offset) | ≥ 350 MPa |
| Elongation in 2 in. / 50 mm | ≥ 40% |
Physical Properties
| Property | Value |
|---|---|
| Density | 9.22 g/cm3 |
| Thermal Conductivity | 11.1 W/m·K |
| Specific Heat Capacity | 373 J/kg·K |
| Elastic Modulus | 216 GPa |
| Magnetic Properties | Practically non-magnetic |
Industry Applications
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