Inconel 625 Flanges

Inconel 625 Flanges, also known as UNS N06625 or 2.4856, are nickel based alloy flanges with outstanding resistance to oxidation and corrosion. They keep their strength and toughness across a wide temperature range from cryogenic levels to 2000°F (1093°C). With a density of 8.4 g/cm³ and tensile strength of 135,000 psi, they deliver durability even in severe conditions.Stability and superior weldability are guaranteed by their chemical compostion, which includes nickel, chromium and trace amounts of carbon, manganese and iron. Metracore Alloys is a reputable manufacturer and supplier of Inconel 625 flanges also manufactures slip-on, weld neck, socket weld, threaded and blind flange that satisfy ASME/ANSI B16.5 requirements.

Inconel 625 Flanges Manufacturers, Inconel 625 Flanges Suppliers, Inconel 625 Flanges Price

These alloy 625 flanges are available in sizes from 1/2″ to 48″ (15NB–1200NB) with Werkstoff Nr. 2.4856. They provide superior corrosion resistance in chloride and acidic environments which makes them well-suited for chemical plants and marine use. Their long service life in the aerospace and power generation industries is made possible by their capacity to remain strong in extremely hot conditions. While resistance to high pressure ensures dependable use in oil, gas and refinery systems easy weldability without post weld heat treatment streamlines fabrication. Because of these factors suppliers of Inconel 625 flanges are selected for demanding applications.

ASTM B564 UNS N06625 flanges are used in turbine exhausts, heat exchangers, offshore platforms, and seawater equipment. They are also valued in aerospace for their high strength-to-weight ratio. Purchasing high-quality raw materials, melting and refining them, forging or rolling them, and then heat treating them for flexibility are all part of the manufacturing process. Correct dimensions are guaranteed by precision machining, and each component is subjected to quality testing, including non-destructive inspection, prior to shipment. These flanges comply with ASTM B564 / ASME SB564 and meet ANSI B16.5, DIN, EN 1092-1, and BS4504 standards. Quality control includes MTCs, PMI tests, and third-party inspections. Certifications like ISO 9001 and NACE MR0175/MR0103 confirm reliability in harsh service.

Inconel 625 Pipe Flanges, ASTM B564 Inconel 625 Flanges, Alloy 625 Flanges

For safe delivery, flanges are packed in bubble wrap, plastic sheets, and fumigated wooden cases, ensuring damage-free transport to global clients.

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Table of Content

Inconel 625 Flanges Specification

Types of Inconel 625 Flanges

Manufacturing Types of Inconel 625 Flanges

Inconel 625 Flanges Face Forms

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Technical Details of Inconel 625 Flanges

Equivalent Grades of ASTM B564 Inconel 625 Flanges

STANDARD	WERKSTOFF NR.	UNS	JIS	AFNOR	BS	GOST	EN	OR
Inconel 625	2.4856	N06625	NCF 625	NC22DNB4M	NA 21	ХН75МБТЮ	NiCr22Mo9Nb	ЭИ602

Inconel 625 Flanges Chemical Composition

Cr2

Nb + Ta

58.0 min

5.0 max

0.10 max

0.50 max

20.0-23.0

8.0-10.0

1.0 max

0.40 max

3.15–4.15

0.015 max

Inconel 625 Flanges Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.4 g/cm3	1350 °C (2460 °F)	Psi – 1,35,000 , MPa – 930	Psi – 75,000 , MPa – 517	42.5 %

Dimensions of Inconel 625 Flanges

Nom. Pipe Size	O	T	R	X	No./Dia. of Holes	Bolt Circle Dia.	L2	H	B2	L	B	r	L3	B3	D
1/2	3.5	0.44	1.38	1.19	4-0.62	2.38	1.88	0.84	0.62	0.62	0.88	0.12	0.62	0.9	0.38
3/4	3.88	0.5	1.69	1.5	4-0.62	2.75	2.06	1.05	0.82	0.62	1.09	0.12	0.62	1.11	0.44
1	4.25	0.56	2	1.94	4-0.62	3.12	2.19	1.32	1.05	0.69	1.36	0.12	0.69	1.38	0.5
1-1/4	4.62	0.62	2.5	2.31	4-0.62	3.5	2.25	1.66	1.38	0.81	1.7	0.19	0.81	1.72	0.56
1-1/2	5	0.68	2.88	2.56	4-0.62	3.88	2.44	1.9	1.61	0.88	1.95	0.25	0.88	1.97	0.62
2	6	0.75	3.62	3.06	4-0.75	4.75	2.5	2.38	2.07	1	2.44	0.31	1	2.46	0.69
2-1/2	7	0.88	4.12	3.56	4-0.75	5.5	2.75	2.88	2.47	1.12	2.94	0.31	1.12	2.97	0.75
3	7.5	0.94	5	4.25	4-0.75	6	2.75	3.5	3.07	1.19	3.57	0.38	1.19	3.6	0.81
3-1/2	8.5	0.94	5.5	4.81	8-0.75	7	2.81	4	3.55	1.25	4.07	0.38	1.25	4.1	0.88
4	9	0.94	6.19	5.31	8-0.75	7.5	3	4.5	4.03	1.31	4.57	0.44	1.31	4.6	0.94

Pressure Ratings of Inconel 625 ASTM B564 UNS N06625 Alloy Flanges

Nominal Diameter of ASTM B564 UNS N05500 Flange	Pressure Rating (PN) of Inconel 625 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 625 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 625 Flanges

Inconel 625 Flanges Application

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