UNS N06455 Hastelloy C-4 Sheet for Aerospace and Chemical Industries

Industries today face more demanding conditions than ever before, with increasing exposure to aggressive chemicals, high temperatures, and the need for long-term material reliability. In such environments, UNS N06455 Hastelloy C-4 Sheet stands out as a durable, high-performance solution. At DLX, we specialize in supplying this advanced nickel-chromium-molybdenum alloy in sheet form, enabling our customers to tackle some of the toughest industrial challenges with confidence.

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Hastelloy C-4 (UNS N06455) is an alloy developed to provide superior stability in high-temperature oxidizing environments. The sheet form of this alloy is particularly valuable for fabricating chemical reactors, aerospace components, pressure vessels, pollution control systems, and pharmaceutical equipment.

The combination of nickel, chromium, and molybdenum ensures excellent resistance to oxidizing agents, localized corrosion, and stress-induced cracking. Its unique metallurgical stability makes it a preferred choice where other alloys might suffer from embrittlement or grain boundary issues under prolonged exposure to heat. DLX manufactures Hastelloy C-4 Sheets in compliance with ASTM B575 standards, delivering materials with consistent quality and performance.

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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Hastelloy C-4 Sheets are widely recognized across critical industries due to their outstanding durability and chemical resistance. Some key application areas include:

• Aerospace: Used in exhaust systems, combustion liners, and other high-temperature structural parts exposed to corrosive gases.

• Chemical Processing: Essential in reactors, heat exchangers, and pipelines handling oxidizing acids, chlorine, and contaminated chemicals.

• Pharmaceutical Industry: Provides a clean, corrosion-resistant material for processing and sterilization equipment.

• Pollution Control: Utilized in scrubbers, stack liners, and waste treatment plants where aggressive chemicals and high heat coexist.

• Petrochemicals: Effective in environments where catalysts, chlorides, and elevated temperatures accelerate material degradation.

By selecting DLX’s Hastelloy C-4 Sheets, customers ensure long-term operational reliability in these demanding sectors.

Global industries are evolving rapidly, and the demand for high-performance materials continues to grow. Several factors are driving the increased adoption of Hastelloy C-4 Sheets:

1. Aerospace Expansion: With advanced propulsion systems and next-generation aircraft, the need for alloys that perform in high-heat, corrosive conditions has increased significantly.

2. Chemical Processing Growth: Modern plants handle stronger oxidizers and more aggressive compounds, requiring stable alloys.

3. Environmental Regulations: Stricter pollution control standards demand more reliable and durable materials for scrubbers and flue gas systems.

4. Pharmaceutical Development: The industry requires materials that maintain purity and integrity under cleaning and sterilization.

5. Global Petrochemical Investments: Expanding facilities across Asia and the Middle East require alloys that can handle both thermal and chemical stress.

Hastelloy C-4 Sheets are positioned as an optimal solution for these trends, combining strength, durability, and reliability.

Comparison Table: Hastelloy C-4 Sheet vs Other Alloys

At DLX, we don’t just provide alloy sheets—we provide engineered solutions. Our Hastelloy C-4 Sheets are produced to strict standards, ensuring superior mechanical properties and long-term corrosion resistance. Here’s what makes us stand out:

• Compliance with Global Standards: All sheets meet ASTM B575 requirements, ensuring consistent and verifiable quality.

• Customization: Thickness, dimensions, and surface finishes tailored to customer specifications.

• Quality Assurance: Each batch undergoes rigorous testing to confirm mechanical strength and resistance to localized corrosion.

• Technical Expertise: Our engineering team provides guidance on welding, forming, and fabrication.

• Global Supply Network: We ensure timely delivery to clients worldwide with efficient logistics.

• Value-Oriented Approach: High-quality products delivered at competitive pricing.

This focus on quality and reliability makes DLX a trusted partner for global clients seeking Hastelloy C-4 Sheets.

While stainless steel is a common choice in many industries, it lacks the durability needed for high-temperature and oxidizing environments. Stainless steel 316L, for instance, performs adequately in mild chemical exposure but falls short under strong oxidizers. Hastelloy C-22 provides a versatile solution for mixed environments, but C-4 excels where long-term high-temperature stability is crucial.

DLX guides its clients in choosing the right material based on performance and cost considerations, ensuring the best fit for their unique applications.

The demand for UNS N06455 Hastelloy C-4 Sheets is projected to grow as industries expand and face more challenging operating conditions. Key growth drivers include:

• Rising demand for aerospace alloys with high thermal stability.

• Expansion of chemical plants in emerging markets.

• Growth of pollution control infrastructure in response to environmental concerns.

• Increased use in pharmaceutical production requiring clean and corrosion-resistant surfaces.

With a strong global presence, DLX is well-positioned to meet this rising demand, providing customers with reliable supply and technical expertise.

UNS N06455 Hastelloy C-4 Sheet is a durable, nickel-chromium-molybdenum alloy designed for high-temperature and aggressive chemical environments. Its resistance to oxidizers, localized corrosion, and stress cracking makes it indispensable in aerospace, chemical processing, pharmaceuticals, and environmental applications.

DLX supplies ASTM-compliant Hastelloy C-4 Sheets, offering tailored solutions, strict quality control, and dependable delivery. By combining high-performance materials with expert support, we enable our customers to achieve reliable performance in the harshest industrial conditions.

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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 UNS N06455 Hastelloy C-4 Sheet?
A1: It is a nickel-chromium-molybdenum alloy sheet designed for high-temperature stability and superior resistance to oxidizing and aggressive chemical environments.

Q2: What industries commonly use Hastelloy C-4 Sheets?
A2: Aerospace, chemical processing, pharmaceuticals, petrochemical, and environmental engineering.

Q3: How does Hastelloy C-4 Sheet perform under high temperatures?
A3: It maintains excellent mechanical properties and corrosion resistance up to approximately 1000°C.

Q4: Is Hastelloy C-4 Sheet resistant to localized corrosion?
A4: Yes, it offers outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking.

Q5: Can Hastelloy C-4 Sheets be welded and fabricated easily?
A5: Yes, they exhibit good weldability and can be fabricated into complex components without grain boundary precipitation issues.

Q6: How does Hastelloy C-4 compare to Hastelloy C-22?
A6: C-4 provides better high-temperature stability, while C-22 is more versatile in mixed oxidizing and reducing environments.

Q7: What are the advantages of Hastelloy C-4 Sheets over stainless steels?
A7: Superior resistance to strong oxidizers, better performance in high-temperature conditions, and improved stability under stress.

Q8: Why choose DLX for Hastelloy C-4 Sheets?
A8: DLX delivers ASTM-compliant sheets, tailored solutions, strict quality control, and reliable global supply to ensure consistent performance.