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Hastelloy B2 |UNS N10665|2.4617 Seamless Tube

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Hastelloy B2 Seamless Tubes are high-performance nickel-molybdenum alloy tubes engineered for exceptional resistance to strong reducing environments, particularly hydrochloric acid and other highly aggressive chemical media. Hastelloy B2 is widely recognized for its superior resistance to pitting, stress corrosion cracking, and localized corrosion in severe process conditions.

Thanks to their excellent corrosion resistance, high mechanical strength, and thermal stability, Hastelloy B2 seamless tubes perform reliably under high temperature and high-pressure operating conditions.

TENGQI, a professional nickel alloy tube manufacturer and supplier based in Fujian, China, specializes in producing precision seamless Hastelloy B2 tubes in compliance with international standards such as ASTM B622 / ASME SB622. Our products are manufactured using advanced production technology and strict quality control procedures.

Each tube undergoes comprehensive inspection and testing, including:

Chemical composition analysis

Mechanical property testing

Non-destructive testing (NDT)

Hydrostatic or eddy current testing

Full material traceability documentation

All tubes are carefully packaged and fully prepared for global export, ensuring consistent quality, reliable performance, and long service life in demanding industrial environments.

SeamlessHastelloy B2 Tube (HastelloyB2 / UNS N10665 / W.Nr. 2.4617) is a nickel-molybdenum alloy immune to hydrochloric acid across all concentrations. 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 ThicknessLength
6.35 mm – 257 mm (1/4"– 10.1")0.5 mm – 12.7 mm≤ 22 m

Chemical Composition

HastelloyB2 (UNS N10665) — Composition %

UNSCMnPSSiCrNiMoCoFe
N10665≤ 0.02≤ 1.0≤ 0.04≤ 0.03≤ 0.10≤ 1.0remainder26.0 – 30.0≤ 1.0≤ 2.0

Mechanical Properties

PropertyValue
Delivery ConditionSolution annealed, pickled & polished
Tensile Strength≥ 760 MPa
Yield Strength (0.2% offset)≥ 350 MPa
Elongation in 2 in. / 50 mm≥ 40%

Physical Properties

PropertyValue
Density9.22 g/cm3
Thermal Conductivity11.1 W/m·K
Specific Heat Capacity373 J/kg·K
Elastic Modulus217 GPa
Magnetic PropertiesPractically non-magnetic

Industry Applications

Hydrochloric & Acetic Acid Service
Sulfuric & Phosphoric Acid Service
Chemical & Petrochemical Industry
Fertilizer & Urea Plants
Heat Exchangers & Boiler Tubes
Pressure Vessels & Reactors
Flue Gas Desulfurization
Pharmaceutical & Food Processing

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Browse the complete ranges: All Hastelloy Alloy Tubes | Explore Hastelloy Alloy Pipes | Seamless Stainless Steel Tubes Catalog

CONTACT US

Lidun Industrial Park, Lidun Town, Zhouning County, Ningde City, Fujian Province,355400,China

+86-577-88877003
+86-577-88877015
+86-577-88877019

+86 13587686960

info@xtd-ss.com
sales@xtd-ss.com

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Lidun Industrial Park, Lidun Town, Zhouning County, Ningde City, Fujian Province,355400,China

+86-577-88877003
+86-577-88877015
+86-577-88877019

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