5 Key Hastelloy C276 Flange Specifications You Should Know
- mvsuperalloys
- 2 days ago
- 3 min read

When it comes to corrosion-resistant alloys, Hastelloy C276 stands out as a premier entertainer, uniquely in industries negotiating with forceful chemicals and high-temperature environments. At MV Super Alloys Pvt. Ltd., we specialize in presenting high-quality flanges, fittings, and components, established to ISO-entitled product standards. As a trusted Hastelloy C276 flanges exporter, we help industries around the world meet their toughest design challenges.
With a dedicated customer support team and skilled personnel providing counselling services, we assure all customers get a faultless product at the exact price. In this blog, we’ll probe the 5 key Hastelloy C276 flange specifications that a complete buyer, engineer, or project manager should know.
Introduction
Hastelloy C276 is a nickel-molybdenum-chromium alloy known for its outstanding corrosion resistance in severe environments. It’s particularly productive counteracting strong oxidizers, reducing mediators, and acidic fixes. Hence, Hastelloy C276 applications such as chemical processing, waste treatment, and marine systems.
Ahead of you picking up C276 Hastelloy flanges, it's vital to understand their specifications. This ensures compatibility, durability, and compliance with your project standards.
1. Material Composition
Why the Composition Matters
The first key Hastelloy C276 flange specification is its chemical makeup. The alloy includes
Nickel (Ni): ~57%
Molybdenum (Mo): 15-17%
Chromium (Cr): 14.5-16.5%
Iron (Fe): 4-7%
Tungsten (W): 3-4.5%
This combination provides resistance to chloride-induced corrosion, pitting, and stress corrosion cracking—manufacturing Hastelloy C276, a preferred material in challenging environments.
As an optimal Hastelloy C276 stockiest, we ensure the total flange is made from allowed, high-purity material that meets international standards.
2. Pressure Class Ratings
Comprehension Pressure Ratings
Flanges are classified by pressure ratings that indicate the maximum pressure they can handle at a given temperature. Casual class ratings for Hastelloy C276 flanges incorporate:
Class 150
Class 300
Class 600
Class 900
Class 1500
These ratings help determine the suitability of a flange in applications like chemical processing plants, where pressure can generally vary. Choosing the accurate class ensures safety and long-term performance.
3. Flange Types
Selecting the Faultless Flange for Your System
MV Super Alloys Pvt. Ltd. offers various flange types under the Hastelloy C276 flange specification, including:
Weld Neck Flanges – Excellent for high-pressure systems
Slip-On Flanges – Simpler to install for low-pressure use
Blind Flanges – Used to seal pipe ends
Socket Weld Flanges – Ideal for small-diameter, high-pressure pipes
Lap Joint Flanges – Useful in systems that require frequent disassembly
Every one type serves a distinct role depending on your project's requirements.
4. Dimensional Standards
International Compatibility is Key
Flange dimensions must meet precise standards to ensure they fit faithfully within global systems. Our Hastelloy C276 flanges adhere to:
ASME B16.5 – For flanges up to 24 inches
ASME B16.47 – For more extensive diameters
ANSI, DIN, EN, JIS, and other international standards
Accurate proportions exclude leakage and misalignment, both of which can become costly in critical systems.
5. Surface Finish and Facing
Don’t Overlook the Finishing Touch
Surface finish is a prime Hastelloy C276 flange specification, as it affects sealing and corrosion resistance. General types attached:
Raised Face (RF) – Most normal; raises gasket seating
Flat Face (FF) – Used when the mating flange is flat
Ring Type Joint (RTJ) – For high-pressure, leak-proof bonds
Accurate facing and finish ensure the flange seals tightly, particularly in systems handling dangerous or corrosive supplies.
Advantage – What About Hastelloy C22 Flanges?
While C276 is largely used, as we are one of the topmost Hastelloy C22 flanges suppliers, we offer strong flanges. Hastelloy C22 has barely enough better resistance to some oxidizing traders and is preferred in particular applications like the pharmaceutical and pulp and paper industries. We stock both C276 and C22 grades to give our customers versatile choices based on their needs.
Conclusion – Choose Us for Validated Quality and Proficient Substitute
Whether you’re a project engineer looking for reliable elements or a buyer in need of international shipping, MV Super Alloys Pvt. Ltd. is your go-to Hastelloy C276 flanges exporter. We provide truthfulness-fabricated products confirmed by ISO-standard quality control, responsive customer service, and specialist meetings.
As a superior Hastelloy C276 stockiest, we not only meet your expectations — we goal to top them. Delve into our wide range of flanges, fittings, and specialty alloys, and let us help you find the faultless solution for your application.
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