ASTM B622 Hastelloy® C-276 Seamless Tube

Hastelloy C-276 seamless tube per ASTM B622 offers superior corrosion resistance for chemical, petrochemical & pollution control. ZYTC Alloy supplies quality tubes.

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As one of the most versatile nickel‑molybdenum‑chromium‑tungsten corrosion‑resistant alloys, Hastelloy® C‑276 (UNS N10276) seamless tube manufactured to ASTM B622 specification is widely trusted for harsh‑condition process piping across global heavy‑industry projects.

Chinese nickel alloy specialist ZYTC Alloy supplies fully‑compliant ASTM B622 Hastelloy® C‑276 seamless tube, delivering traceable material certification and custom manufacturing for international buyers.

Understanding ASTM B622 Standard Requirements

ASTM B622 is the primary industry specification governing seamless pipe and tube products made from nickel and nickel‑cobalt alloys, setting mandatory rules for chemical composition classification, mechanical performance, and full‑lot inspection procedures.

Under this standard, every single piece of Hastelloy® C‑276 seamless tube must complete critical validation:

Mechanical testing including tensile strength, yield strength and elongation measurement to verify ductility and pressure‑bearing capacity.
Mandatory hydrostatic test and non‑destructive electric test for each tube unit to detect hidden material defects.
Strict chemical composition verification and weight calculation for batch traceability.
Solution‑annealed delivery condition to secure balanced corrosion‑resistance and fabrication performance.

All Hastelloy® C‑276 seamless tubes from ZYTC Alloy strictly follow ASTM B622 compliance. Full MTC material test reports, PMI inspection records and EN certification are provided for every shipment, fully meeting overseas engineering‑project audit standards.

Material Advantages of Hastelloy® C‑276

Hastelloy C‑276 is a well‑balanced nickel‑base alloy formulated with molybdenum, chromium and tungsten additions. The combined alloying elements grant it unique material strengths that few stainless steels or ordinary nickel alloys can match.

Outstanding universal corrosion resistance, performing reliably under both oxidizing and reducing chemical environments; excellent resistance against pitting, crevice corrosion and chloride‑induced stress‑corrosion cracking.
Excellent fabricability: good welding and forming properties. Its low‑carbon design minimises carbide precipitation during welding, preserving corrosion resistance of weld joints without post‑weld heat treatment requirements.
Stable mechanical properties over wide temperature ranges, suited for high‑pressure piping systems operating under fluctuating process conditions.

These core characteristics make Hastelloy C‑276 seamless tube the preferred solution for scenarios where conventional stainless steel materials suffer rapid degradation.

Chemical Composition (UNS N10276) – ASTM B622

Element	Content Range
Nickel (Ni)	Balance
Chromium (Cr)	14.5 – 16.5%
Molybdenum (Mo)	15.0 – 17.0%
Tungsten (W)	3.0 – 4.5%
Iron (Fe)	4.0 – 7.0%
Cobalt (Co)	≤ 2.5%
Carbon (C)	≤ 0.010%
Manganese (Mn)	≤ 1.0%
Silicon (Si)	≤ 0.08%
Sulfur (S)	≤ 0.02%
Phosphorus (P)	≤ 0.025%
Vanadium (V)	≤ 0.35%

Mechanical Properties (ASTM B622 Requirement)

Property	Requirement
Tensile Strength, min	690 MPa (100 ksi)
Yield Strength (0.2% offset), min	283 MPa (41 ksi)
Elongation (in 2″ or 4D), min	40%

Applications

Industry	Applications
Chemical Processing	Heat exchangers, reaction vessels, evaporators, transfer piping
Pollution Control	Scrubbers, stack liners, ducts, flue gas desulfurization systems
Oil & Gas	Sour gas wells, downhole tubular components
Pharmaceutical	High-purity processing equipment
Pulp & Paper	Bleaching and chemical recovery systems
Waste Treatment	Incineration and hazardous waste processing

ZYTC Alloy Supply Capabilities

ZYTC Alloy supplies ASTM B622 seamless tubes in a complete range of dimensions:

Parameter	Range
Outside Diameter (OD)	5.0 – 250 mm
Wall Thickness	0.3 – 50 mm
Length	Up to 22 meters
Condition	Solution-annealed (solid solution heat-treated)

Beyond seamless tubes, ZYTC Alloy also offers:

Welded Pipe – ASTM B619
Welded Tubing – ASTM B626
Plate, Sheet & Strip – ASTM B575
Bar & Rod – ASTM B574
Forgings – ASTM B564
Fittings – ASTM B366
Welding Wire & Covered Electrodes – AWS A5.14 / A5.11

Why Source ASTM B622 C‑276 Seamless Tube from ZYTC Alloy

As a reliable China‑based nickel‑alloy supplier, ZYTC Alloy focuses on high‑performance corrosion‑resistant alloy products for global industrial clients.

Strictly execute ASTM B622 production specifications, with full‑range non‑destructive inspection for each batch of seamless tube.
Flexible order options: standard stock sizes plus custom OD, wall‑thickness and length manufacturing.
Complete documentation package for cross‑border project procurement, supporting third‑party inspection upon request.
One‑stop supply covering tubes, plates, bars and welding consumables to simplify customers’ sourcing workflow.

When your project requires dependable nickel‑alloy seamless tubing for extreme corrosive working conditions, ASTM B622 Hastelloy C‑276 from ZYTC Alloy delivers long‑term equipment reliability.

Contact us today to secure your stock.

📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350

Your trusted partner for high-performance nickel alloy seamless tubes.

Disclaimer: Hastelloy® is a registered trademark of Haynes International, Inc. Technical data for reference only. Please consult ZYTC Alloy for specific product specifications.