ASTM B622 UNS N10276 Hastelloy C276 Seamless Tube for Harsh Environments

When industries operate in environments where corrosion and chemical attack are constant threats, the choice of material becomes critical. ASTM B622 UNS N10276 Hastelloy C276 Seamless Tube is one of the most dependable solutions for such demanding conditions. At DLX, we specialize in supplying these seamless tubes with precision, reliability, and global service, ensuring our customers achieve long-term performance in even the harshest environments.

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Hastelloy C276, designated UNS N10276, is a nickel-chromium-molybdenum alloy enhanced with tungsten for broad resistance to a wide variety of aggressive chemicals. What sets it apart is its ability to withstand both oxidizing and reducing conditions simultaneously, a unique advantage in industries that deal with complex processes.

ASTM B622 governs the manufacturing of seamless tubes in this alloy, ensuring strict quality and dimensional standards. Seamless tubes differ from welded tubes by having no welded seams, which eliminates weak points and improves overall structural integrity. This makes them particularly suitable for high-pressure and high-temperature applications.

At DLX, our Hastelloy C276 Seamless Tubes are produced under rigorous standards, delivering the durability and consistency required by global industries.

Specification

item	HC-276	C-22	C-4	B2	B3	N
C	≤0.01	≤0.015	≤0.015	≤0.02	≤0.01	0.04-0.08
Mn	≤1	≤0.5	≤1	≤1	≤3	≤1
Fe	4-7	2-6	≤3	≤2	≤1.5	≤5
P	≤0.04	≤0.02	≤0.04	≤0.04	--	≤0.015
S	≤0.03	≤0.02	≤0.03	≤0.03	--	≤0.02
Si	≤0.08	≤0.08	≤0.08	≤0.1	≤0.1	≤1
Ni	rest	rest	rest	rest	≤65	rest
Co	≤2.5	≤2.5	≤2	≤1	≤3	≤0.2
Ti+Cu	--	--	≤0.7	--	≤0.4	≤0.35
Al+Ti	--	--	--	--	≤0.5	≤0.5
Cr	14.5-16.5	20-22.5	14-18	≤1	≤1.5	6-8
Mo	15-17	12.5-14.5	14-17	26-30	≤28.5	15-18
B	--	--	--	--	--	≤0.01
W	3-4.5	2.5-3.5	--	--	≤3	≤0.5
V	≤0.35	≤0.35	--	0.2-0.4	--	≤0.5

Shape	Size (mm)
Wire	0.5-7.5
Rod/Bar	8.0-200
Strip	(0.5-2.5)*(5-180)
Tube/Pipe	Custom made
Sheet/Plate	Custom made

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Seamless tubes made from Hastelloy C276 are used in critical applications where failure is not an option:

• Chemical Processing: Transfer lines, evaporators, heat exchangers, and reactors handling aggressive acids and chlorides.

• Petrochemical Plants: Equipment exposed to mixed chemical streams, reducing agents, and oxidizers.

• Marine Engineering: Systems exposed to seawater where pitting, crevice corrosion, and stress corrosion cracking are risks.

• Power Generation: Flue gas scrubbers, condensers, and stack liners requiring resistance to hot contaminated environments.

• Pollution Control: Waste treatment and environmental protection equipment where chemicals are concentrated and aggressive.

• Pharmaceutical Industry: Equipment requiring resistance to sterilizing agents and ensuring contamination-free processes.

By offering seamless tubes in customized dimensions, DLX ensures each customer receives the best fit for their specific application.

The global demand for nickel alloys, particularly Hastelloy C276 seamless tubes, is increasing due to several industry drivers:

1. Growth in Chemical Processing Plants: Expansion in Asia-Pacific is creating high demand for robust tubing systems resistant to corrosion.

2. Petrochemical Expansion: With rising global energy needs, petrochemical facilities require durable tubes to handle extreme process conditions.

3. Marine and Offshore Development: Offshore oil, gas, and marine engineering projects demand materials capable of surviving seawater and harsh chemicals.

4. Tighter Environmental Regulations: Global policies on emissions and waste treatment push industries to adopt materials capable of long service life under aggressive cleaning and scrubbing conditions.

5. Pharmaceutical Sector Demand: Expanding healthcare production relies on corrosion-resistant alloys to maintain product purity and equipment durability.

Hastelloy C276 seamless tubes fit directly into these trends, ensuring that industries can operate efficiently, safely, and within regulatory frameworks.

Comparison Table: Hastelloy C276 Seamless Tube vs Other Alloys

At DLX, we understand that material performance is only part of the solution. Reliability in supply, consistency in quality, and expert support make the difference. That is why customers worldwide choose DLX for Hastelloy C276 Seamless Tubes.

• Standards Compliance: We manufacture according to ASTM B622 and international norms, ensuring every product meets global benchmarks.

• Customization Flexibility: DLX provides seamless tubes in varied diameters, wall thicknesses, and lengths tailored to application requirements.

• Quality Assurance: Rigorous chemical analysis, mechanical testing, and corrosion resistance validation are performed on each batch.

• Technical Support: Our team provides welding guidance, machining recommendations, and installation best practices.

• Global Logistics: With efficient supply chains, DLX ensures timely delivery to customers across multiple continents.

• Value Balance: We offer competitive pricing while maintaining premium quality and service.

This combination of quality, service, and value makes DLX a trusted partner across industries.

When comparing Hastelloy C276 seamless tubes to stainless steel and other nickel alloys, the benefits are clear. Stainless steel 316L, while cost-effective, struggles in chloride-rich and oxidizing environments, leading to premature failure. Hastelloy B-2, while strong in reducing acids, has limited performance in oxidizing media.

Hastelloy C276 strikes the balance by offering strong resistance across a wide spectrum of environments, reducing the need for multiple materials in a single plant. Its seamless tube form further ensures no weld-related weak points, making it ideal for critical systems. DLX emphasizes this unique performance profile to help customers make informed decisions.

Looking forward, the demand for ASTM B622 UNS N10276 Hastelloy C276 Seamless Tubes is expected to continue growing. Factors driving this include:

• Industrialization in Asia-Pacific: Increasing chemical and refining projects.

• Offshore Oil & Gas Expansion: Subsea pipelines and processing systems requiring durable tubes.

• Stricter Environmental Standards: Stronger regulations in Europe and North America on emissions and waste treatment.

• Healthcare and Pharma Growth: Rising global drug production needs highly resistant alloys.

DLX is strategically positioned to serve these growing markets with reliable supply and technical expertise.

Conclusion

ASTM B622 UNS N10276 Hastelloy C276 Seamless Tube is a critical material for industries working in harsh environments. Its combination of corrosion resistance, structural integrity, and versatility makes it indispensable in chemical, petrochemical, marine, and environmental systems.

At DLX, we go beyond delivering tubes. We deliver reliability, consistency, and support. Our focus on strict standards, global logistics, and customer partnerships ensures that clients achieve the performance they expect from Hastelloy C276 Seamless Tubes.

As industries continue to face tougher conditions and higher demands, DLX remains committed to being the trusted supplier for ASTM B622 UNS N10276 Hastelloy C276 Seamless Tubes, helping clients succeed in the most challenging environments.

For more details, pls directly contact us.

About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQs:

Q1: What is ASTM B622 UNS N10276 Hastelloy C276 Seamless Tube?
A1: It is a nickel-chromium-molybdenum alloy seamless tube designed for excellent corrosion resistance in harsh oxidizing and reducing environments.

Q2: What industries use Hastelloy C276 Seamless Tube most often?
A2: Industries such as chemical processing, petrochemicals, marine engineering, power generation, and pollution control rely on it.

Q3: What is the main advantage of seamless tubes compared to welded tubes?
A3: Seamless tubes provide superior structural integrity, no weld-related weak points, and consistent performance under pressure.

Q4: How does Hastelloy C276 perform in seawater?
A4: It offers excellent resistance to localized corrosion, including pitting and crevice attack, making it suitable for marine applications.

Q5: Can ASTM B622 UNS N10276 Hastelloy C276 Seamless Tube handle high-temperature service?
A5: Yes, it maintains strength and corrosion resistance up to about 1000°C depending on the environment.

Q6: Is Hastelloy C276 Seamless Tube resistant to chlorides and strong acids?
A6: Yes, it resists ferric and cupric chlorides, hot contaminated solutions, and strong oxidizers like chlorine.

Q7: Why is DLX a reliable supplier of Hastelloy C276 Seamless Tube?
A7: DLX ensures ASTM-standard compliance, precise dimensions, strict quality control, and global customer support.

Q8: What applications benefit most from Hastelloy C276 Seamless Tubes?
A8: Heat exchangers, condensers, transfer pipelines, scrubbers, and reactors exposed to mixed chemicals and extreme conditions.