Inconel Flanges

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Inconel flanges are pipe fittings used to join pipes, valves or equipment. It is composed of Inconel, an alloy based on nickel and chromium that is renowned for its exceptional corrosion resistance, high strength, and capacity to withstand high pressure and heat. These flanges retain their mechanical stability across wide temperature ranges, making them reliable in tough environments. Metracore Alloys a trusted Inconel flanges manufacturer in India creates precise, high-quality products to meet demands around the world. The alloy composition typically includes Nickel (≥ 72%), Chromium (14–17%), Iron (6–10%) and small amounts of Manganese, Copper, and Carbon. Mechanical properties include a tensile strength of 655 MPa, yield strength of 310 MPa and elongation of 40%, giving the flanges toughness and durability in critical uses.

Inconel Flanges Manufacturers, Inconel Flanges Suppliers, Inconel Flanges Price

The flanges are manufactured in line with international standards. Specifications include ASTM B564 / ASME SB564, with sizes ranging from 1/2″NB to 60″NB. They are made to deliver reliability under high temperatures up to 2000°F (1093°C) without losing strength. Key features include strong resistance to corrosion in acids, alkalis and chlorides, along with oxidation resistance at elevated temperatures. They retain toughness from cryogenic to hot conditions, support ease of welding, and show strong creep resistance under long-term stress. These qualities make Inconel flanges suitable for demanding industrial environments.

The unique combination of strength and corrosion resistance makes them a preferred choice in many sectors. They are used in gas turbine engines, nuclear reactors, petrochemical plants and chemical processing systems. Industries rely on them for valves, pumps, exhaust systems and heat exchangers that need safety and reliability. They are used in turbine components for power generation and in aircraft engines and combustion chambers for aerospace applications. High-grade Inconel alloy must be forged or rolled, heat treated for the right grain structure, machined for precise dimensions, and subjected to stringent testing prior to shipment.

Inconel Pipe Flanges, ASTM B564 Inconel Flanges

Every batch of our Inconel Flanges is tested and certified before delivery. Certifications include EN 10204/3.1B, raw material test reports, 100% radiography test reports, and third-party inspection certificates. To ensure safe transit, our flanges are packed in wooden crates, pallets, or bubble-wrapped bundles depending on size and order requirements. This prevents damage and ensures products reach customers in ready-to-use condition. Metracore Alloys is a reliable Inconel flanges supplier, committed to delivering consistent quality and timely service worldwide.

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Table of Content

Inconel Flanges Specification

Types of Inconel Flanges

Manufacturing Types of Inconel Flanges

Inconel Flanges Face Forms

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Technical Details of Inconel Flanges

Dimensions of Inconel Flanges

Inconel Flanges Dimensions ‘DN’ (Nominal Diameter) in mm
INCH	DN	INCH	DN
1/2	15	12	300
3/4	20	14	350
1	25	15	375
1 1/4	32	16	400
1 1/2	40	18	450
2	50	20	500
2 1/2	65	24	600
3	80	28	700
4	100	30	750
5	125	32	800
8	200	36	900
10	250

Pressure Ratings of ASTM B564 Inconel Alloy Flanges

Nominal Diameter of ASTM B564 UNS N06600 Flange	Pressure Rating (PN) of Inconel Flange
Nominal BSP Pipe Size	PN6	PN10	PN16	PN25	PN40
DN 10	75	90	90	90	90
3/8″	50	60	60	60	60	Bolt circle (PCD)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	*
DN 15	80	95	95	95	95
1/2″	55	65	65	65	65	Bolt circle (PCD)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	*
DN 20	90	105	105	105	105
3/4″	65	75	75	75	75	Bolt circle (PCD)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	*
DN 25	100	115	115	115	115
1″	75	85	85	85	85	Bolt circle (PCD)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	*
DN 32	120	140	140	140	140
1 1/4″	90	100	100	100	100	Bolt circle (PCD)
	4 x 14	4 x 18	4 x 18	4 x 18	4 x 18	*
NOTE:*# of holes x diam. of holes “PCD” – Pitch Circle Diameter

Size of Inconel Flanges

Size in (In)	Size in (Mm)	No of Bolts	Bolt UNC Size	RF Stud Length	Stud ISO Size	Machine Flange Bolt Len
1/2	15	4	1/2	55	M14	50
3/4	20	4	1/2	65	M14	50
1	25	4	1/2	65	M14	55
1 ^1/2	40	4	1/2	70	M14	65
2	50	4	5/8	85	M16	70
3	80	4	5/8	90	M16	75
3 ^1/2	90	8	5/8	90	M16	75
6	150	8	3/4	100	M20	85
8	200	8	3/4	110	M20	90
10	250	12	7/8	115	M24	100
1 ^1/4	32	4	1/2	70	M14	55
2 ^1/2	65	4	5/8	90	M16	75
5	125	8	3/4	95	M20	85
16	400	16	1	135	M27	115
18	450	16	1 1/8	145	M30	125
20	500	20	1 1/8	160	M30	140

Manufacturing Process of Inconel Flanges

Inconel Flanges Application

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