Hastelloy Flanges

Excellent corrosion resistance
High-temperature stability
Resistance to stress corrosion cracking

High Quality Hastelloy Flanges

Hastelloy flanges provided by SSM are made of a high-performance nickel-based alloy known as Hastelloy. This alloy offers excellent corrosion resistance and is specifically designed for use in harsh chemical environments and high-temperature applications. Our range of products includes various types to meet your specific requirements.

SSM provides Hastelloy flanges with specifications, standards, types, and pressure levels.

Standard	Flange Types	Pressure Class / Table
ASME/ANSI B 16.5	Welding Neck Flange, Slip-on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange	150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47	Welding Neck Flange, Blind Flange [Series A & B]	75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36	Welding Neck Flange, Slip-on Flange, Threaded Flange	300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1	Welding Neck Flange, Hubbed Slip-on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange, Loose Plate Flange, Loose Plate with Weld Neck Flange, Blank Flange	PN 2.5 to PN 40
BS 4504 [PART 1]	Welding Neck Flange, Hubbed Slip-on Flange, Hubbed Threaded Flange, Plate Flange, Loose Plate with Weld On Plate Collar, Blank Flange	PN 2.5 to PN 400
BS 1560 BOSS	Welding Neck Flange, Socket Welding Flange, Slip-On Flange, Blind Flange, Screwed Boss Flange, Lapped Flange	150, 300, 400, 600, 900, 1500, 2500
BS 10	Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange	Table D, E, F, H
DIN Flanges	DIN 2527, 2566, 2573, 2576, 2641, 2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638, 2673	PN 6 to PN 100

Equivalents of Different Hastelloy Flange Types

Hastelloy Grade	UNS Number	EN Number	DIN Number	AFNOR	BS	JIS
Hastelloy C276	N10276	2.4819	W.Nr. 2.4819	NC17D	NA 102	NW 0276
Hastelloy C22	N06022	2.4602	W.Nr. 2.4602	–	NA 45	NW 6022
Hastelloy C4	N06455	2.461	W.Nr. 2.4610	–	NA 39	NW 6455
Hastelloy C2000	N06200	2.4675	–	–	–	–
Hastelloy B2	N10665	2.4617	W.Nr. 2.4617	–	NA 34	NW 0665
Hastelloy B3	N10675	2.46	W.Nr. 2.4600	–	–	NW 0675
Hastelloy X	N06002	2.4665	W.Nr. 2.4665	–	NA 26	NW 602

Chemical Composition、Physical & Mechanical Properties

Chemical Composition (Weight %)

Element	C-276	C-22	C-4	C-2000	B-2	B-3	X
Nickel (Ni)	Balance	Balance	Balance	Balance	Balance	Balance	Balance
Chromium (Cr)	14.5 – 16.5	20.0 – 22.5	14.0 – 18.0	22.0 – 24.0	0.4 – 1.0	1.0 max	20.5 – 23.0
Molybdenum (Mo)	15.0 – 17.0	12.5 – 14.5	14.0 – 17.0	15.0 – 17.0	26.0 – 30.0	27.0 – 32.0	8.0 – 10.0
Iron (Fe)	4.0 – 7.0	2.0 – 6.0	2.0 max	3.0 – 4.5	2.0 max	1.5 max	17.0 – 20.0
Tungsten (W)	3.0 – 4.5	2.5 – 3.5	3.0 max	–	–	–	0.2 – 1.0
Cobalt (Co)	2.5 max	2.5 max	2.0 max	2.0 max	1.0 max	3.0 max	0.5 – 2.5
Carbon (C)	0.01 max	0.015 max	0.01 max	0.01 max	0.02 max	0.01 max	0.05 – 0.15
Manganese (Mn)	1.0 max	0.5 max	1.0 max	0.5 max	1.0 max	3.0 max	1.0 max
Silicon (Si)	0.08 max	0.08 max	0.08 max	0.08 max	0.1 max	0.1 max	1.0 max
Phosphorus (P)	0.025 max	0.02 max	0.03 max	0.02 max	0.02 max	0.02 max	0.04 max
Sulfur (S)	0.01 max	0.02 max	0.02 max	0.01 max	0.02 max	0.01 max	0.03 max
Vanadium (V)	–	–	–	–	–	–	0.35 max
Aluminum (Al)	–	–	–	–	–	–	0.5 max
Copper (Cu)	–	1.5 – 2.4	–	1.3 – 1.9	–	–	–

Physical Properties

Property	C-276	C-22	C-4	C-2000	B-2	B-3	X
Density (g/cm³)	8.89	8.69	8.64	8.69	9.24	9.14	8.22
Melting Point (°C)	1325 – 1370	1350 – 1400	1330 – 1380	1399 – 1426	1330 – 1380	1370 – 1418	1260 – 1348
Electrical Resistivity (µΩ·m)	1.2	1.23	1.27	1.3	1.3	1.3	1.21
Thermal Conductivity (W/m·K)	10.2	9.5	9.1	9.7	8.9	10.2	9.9
Coefficient of Thermal Expansion (µm/m·°C)	11.0 – 12.5	11.1	10.8 – 11.5	11	10.3	10.6	12.4

Mechanical Properties

Property	C-276	C-22	C-4	C-2000	B-2	B-3	X
Tensile Strength (MPa)	760	690	690	690	690	760	655
Yield Strength (MPa)	355	310	310	310	310	415	345
Elongation (%)	40	45	40	45	40	40	40
Hardness (HRB)	85	90	90	95	85	90	82

Excellent corrosion resistance

Hastelloy flanges can resist erosion from a variety of corrosive media, including strong acids, strong alkalis, oxidizing solutions, and chlorides. They are particularly suitable for use in highly corrosive environments such as the chemical and marine industries. Additionally, they maintain excellent corrosion resistance under high-temperature conditions and are suitable for equipment such as high-temperature chemical reactors and heat exchangers.

High-temperature strength and stability

Hastelloy flanges have excellent strength and stability in high-temperature environments and are not prone to deformation or failure. They maintain structural integrity at temperatures up to 1100°C, making them suitable for high-temperature equipment in aerospace, petrochemical, and other industries. Moreover, they possess excellent anti-oxidation and anti-carbonization capabilities, extending the equipment’s service life.

Excellent mechanical properties

Hastelloy flanges excel at stress corrosion cracking (SCC), especially in chloride-containing environments. They maintain structural stability under high-stress conditions and reduce the risk of equipment failure. Furthermore, they are highly tough and pliable, maintaining good mechanical properties even at low temperatures, and are suitable for extreme environments.

Wide application applicability

Hastelloy flanges can be used in various industries, including chemical, oil, gas, pharmaceutical, pollution control, and aerospace. Their excellent performance in various harsh working conditions makes them ideal for critical equipment. Additionally, they can operate reliably in complex acid-base mixed media, marine environments, and high-pressure and high-temperature conditions.

Application of Hastelloy Flanges

Chemical processing equipment: Used in reactors, heat exchangers, storage tanks, and other equipment operating in acidic environments.
Oil and gas industry: Employed in piping systems requiring high corrosion resistance, particularly in marine or acid gas treatment applications.
Pollution control equipment: Utilized in flue gas desulfurization equipment, wastewater treatment systems, etc.
Aerospace: Utilized in high-temperature and corrosive environments, such as engine components and exhaust systems.

One-Stop Flange Provider for All Your Needs

SSM has significant product advantages in manufacturing Hastelloy Flange. Whether it’s quality or price, we will meet your needs.

FAQ

What is the corrosion resistance of the Hastelloy flange?

The Hastelloy flange exhibits outstanding corrosion resistance and can withstand a wide range of corrosive substances, including sulfuric acid, hydrochloric acid, phosphoric acid, hydrofluoric acid, hypochlorite, and other strong oxidizing chemicals. It performs well in corrosive environments and is suitable for handling various acids, alkalis, and other substances.

How high a temperature can a Hastelloy flange withstand?

Hastelloy flanges maintain excellent performance at high temperatures. Different types of Hastelloy alloys can withstand various temperature ranges, but generally, they can endure temperatures up to 1100°C while maintaining good oxidation and carbonization resistance.

What are the advantages of Hastelloy flanges compared to stainless steel flanges?

Compared with stainless steel flanges, Hastelloy flanges offer higher corrosion resistance, especially when dealing with strong acids, alkalis, and high-temperature environments. Stainless steel may rust or experience stress corrosion cracking under certain extreme conditions, while Hastelloy flanges perform well in such scenarios.

How do you choose the suitable Hastelloy flange model?

Choosing the appropriate Hastelloy flange model depends on the specific requirements of the application environment, such as working pressure, temperature, media corrosiveness, etc. Common Hastelloy alloys include C-276, C-22, and B-2, with different alloys suitable for various working conditions. It is recommended that a professional engineer or manufacturer select an appropriate model.

Is Hastelloy flange easy to process and install?

Hastelloy flanges are challenging to process and require special tools and techniques. However, once processed, they can be installed as quickly as other metal flanges. To ensure the flange’s performance, it is recommended that experienced professionals handle the processing and installation.

Does the Hastelloy flange require high maintenance?

Due to the excellent corrosion resistance and high-temperature performance of Hastelloy flanges, frequent maintenance is generally not required. However, regular inspections are necessary to ensure the integrity of the flanges and connected components, especially under extreme operating conditions.

Is the price of Hastelloy flanges expensive?

Like ordinary carbon steel and stainless steel flanges, Hastelloy flanges are more expensive. However, their higher price reflects the unique properties of the material and the alloy composition used. Investing in Hastelloy flanges is often worthwhile for applications requiring high corrosion resistance and high-temperature performance.

Summary

Hastelloy flanges are high-performance products suitable for highly corrosive and high-temperature environments. Their exceptional corrosion resistance and high-temperature performance make them essential material choices for the chemical, oil, and natural gas industries. These flanges provide reliable connections and long service life even under harsh working conditions. We welcome you to consult with us and consider purchasing our Hastelloy flanges.

More Resources:

HASTELLOY® N alloy