High Nickel Alloy Flanges | Inconel | Monel | Hastelloy

High nickel alloys are a family of advanced metals built to perform where ordinary steels give out. They carry a high percentage of nickel, usually combined with chromium, molybdenum, iron, and cobalt, and that mix is what lifts their corrosion resistance, heat resistance, and mechanical strength. The balanced composition is why these alloys turn up wherever pressure, temperature, and chemical exposure run to the extremes. You will find them in chemical processing plants, marine environments, aerospace systems, power generation equipment, and oil and gas facilities. PM Industries supplies and stocks high nickel alloys across a wide range of grades and product forms.

The biggest draw is corrosion resistance. These alloys stand up to acids, seawater, chlorides, and oxidizing agents, which suits equipment that has to keep running in aggressive conditions for years. They also hold their strength and shape at high temperature, so they perform in turbines, heat exchangers, furnaces, and reactors. Their resistance to oxidation and stress-related damage stretches service life and trims maintenance cost. Many grades bring good toughness and fatigue resistance too, so they take repeated loading, vibration, and thermal cycling without losing performance.

Common grades include Inconel, Monel, Hastelloy, and Invar, each developed for a particular job. Inconel handles high-temperature service. Monel earns its place in seawater and chemical exposure. Hastelloy is the pick for severe corrosive media, and Invar suits work that needs very low thermal expansion. These materials also show up in medical, electrical, and scientific equipment, where precision and durability both matter.

High nickel alloys cost more than standard metals, but the long service life, reliability, and reduced downtime often make them the economical choice in critical applications. They carry a lot of modern engineering, delivering strength and protection where safety and durability cannot be cut. PM Industries holds stock ready to ship, with certification and test documentation on every order. Tell us your alloy grade, product form, size, and specification, and we will quote it.

Specification High Nickel Alloys Flanges

Standards	ANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard	5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGES	DIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure Rating	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Types	Threaded, Plate, Screwed, Forged.
Supporting material	Gasket, Ring Joint, Flange Bolts
Size range	1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production technique	Forged, machined and Heat treated
Available Flange Type	Weld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face Type	Ring Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom design	As per your drawing
Test	Direct-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
Origin	Indian / USA / Korean / West Europe / Japan
Pressure Class	PN 6 TO PN 100
Thickness	Normal Pipe Size ≤ 18
Bore Diameter	Normal Pipe ≤ 10
High Temperature	Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature	Above -29 Degree C (−20°F)
Coating/Surface Treatment:	Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard Flanges	Available
Gaskets Types	Full Face, Metallic Ring, Flat Ring Gasket
Marking Standard	Name of Manufacturer
	Schedule
	Type of Flange Facing
	Pressure Class
	Nominal Pipe Size, etc
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
	Raw Materials Certificate
	100% Radiography Test Report
	Third Party Inspection Report, etc

Flange Type Available

Equivalent Grade

STANDARD	UNS	WNR.	AFNOR	EN	JIS	BS	GOST
SS 304	S30400	1.4301	Z7CN18‐09	X5CrNi18-10	SUS 304	304S31	08Х18Н10

Chemical Properties

Grades	C	Mn	Si	P	S	Cr	Ni	N
304	0.07 max	2.0 max	0.75 max	0.045 max	0.03 max	18.0 - 20.0	8.0 - 10.5	—

Mechanical Properties

Grade	Tensile Strength ksi (min)	Yield Strength 0.2% ksi (min)	Elongation (%)	Hardness (Brinell) Max	Hardness (Rockwell B) Max
304	75	30	40	201	92

Dimensions Standard Of Nickel Flanges

ASME/ANSI B 16.5	Lap Joint Flange, Ring Type Joint Flange, Threaded Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Slip on Flange, Welding Neck Flange.
PRESSURE CLASS	150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47	Blind Flange [Series A & B], Welding Neck Flange.
PRESSURE CLASS	75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36	Slip on Flange, Threaded Flange, Welding Neck Flange.
PRESSURE CLASS	300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1	Plate Flange, Welding Neck Flange, Hubbed Slip on Flange, Lapped Pipe End Flange, Loose Plate With Weld Neck Flange, Hubbed Threaded Flange, Blank Flange, Loose Plate Flange.
PRESSURE CLASS	PN 2.5 TO PN 40
BS 4504[PART 1]	Blank Flange, Loose Plate With Weld On Plate Collar, Welding Neck Flange, Plate Flange, Hubbed Slip-On Hubbed Threaded.
PRESSURE CLASS	PN 2.5 TO PN 400
BS 1560 BOSS	Blind Flange, Screwed Boss Flange, Welding Neck Flange,Slip-On Flange, Lapped Flange, Socket Welding Flange.
PRESSURE CLASS	150, 300, 400, 600, 900, 1500, 2500
BS10	Screwed Boss Flange, Plate Slip-On Flange, Slip-On Boss Flange, Blind Flange, Welding Neck Flange.
TABLE	D, E, F, H
DIN FLANGES	DIN 2527, 2632, 2635, 2673, 2566, 2655, 2631, 2627, 2634, 2576, 2636, 2629, 2633, 2573, 2656, 2638, 2637, 2642, 2641, 2628
PRESSURE CLASS	PN 6 TO PN 100

Size of Nickel Flanges

Stainless Steel Flanges Wall Thickness
NPS (Normal Pipe Sizes)	Outside Daimeter (O.D.)	Schedule 10	Schedule 20	Schedule 30	Schedule 40	Schedule 60	Schedule 80	Schedule 100	Schedule 120	Schedule 140	Schedule 160
½	0.84	0.083	…	…	0.109	…	0.147	…	…	…	0.188
¾	1.05	0.083	…	…	0.113	…	0.154	…	…	…	0.219
1	1.315	0.109	…	…	0.133	…	0.179	…	…	…	0.25
1 ¼	1.66	0.109	…	…	0.14	…	0.191	…	…	…	0.25
1 ½	1.9	0.109	…	…	0.145	…	0.2	…	…	…	0.281
2	2.375	0.109	…	…	0.154	…	0.218	…	…	…	0.344
2 ½	2.875	0.12	…	…	0.203	…	0.276	…	…	…	0.375
3	3.5	0.12	…	…	0.216	…	0.3	…	…	…	0.438
3 ½	4	0.12	…	…	0.226	…	0.318	…	…	…	…
4	4.5	0.12	…	…	0.237	…	0.337	…	0.438	…	0.531
5	5.563	0.134	…	…	0.258	…	0.375	…	0.5	…	0.625
6	6.625	0.134	…	…	0.28	…	0.432	…	0.562	…	0.719
8	8.625	0.148	0.25	0.277	0.322	0.406	0.5	0.594	0.719	0.812	0.906
10	10.75	0.165	0.25	0.307	0.365	0.5	0.594	0.719	0.844	1	1.125
12	12.75	0.18	0.25	0.33	0.406	0.562	0.688	0.844	1	1.125	1.312
14	14	0.25	0.312	0.375	0.438	0.594	0.75	0.938	1.094	1.25	1.406
16	16	0.25	0.312	0.375	0.5	0.656	0.844	1.031	1.219	1.438	1.594
18	18	0.25	0.312	0.438	0.562	0.75	0.938	1.156	1.375	1.562	1.781
20	20	0.25	0.375	0.5	0.594	0.812	1.031	1.281	1.5	1.75	1.969
22	22	0.25	…	…	…	…	…	…	….	….	….
24	24	0.25	0.375	0.562	0.688	0.969	1.219	1.531	1.812	2.062	2.344
26	26	….	….	….	….	….	….	….	….	….	….
30	30	0.312	0.5	0.625	….	….	….	….	….	….	….
36	36	0.312	0.5	0.625	0.75	….	….	….	….	….	….
40	40	….	….	….	….	….	….	….	….	….	….
42	42	……..	……..	……..	……..	……..	……..	……..	……..	……..	……..
48	48	……..	……..	……..	……..	……..	……..	……..	……..	……..	……..

Weight Chart Of Nickel Flanges

NPS	Gasket I.D.	Gasket O.D.
		Class 150	Class 300	Class 400	Class 600	Class 900
1/2	0.84	1.875	2.125	2.125	2.125	2.50
3/4	1.06	2.25	2.625	2.625	2.625	2.75
1	1.31	2.625	2.875	2.875	2.875	3.125
1 1/4	1.66	3	3.25	3.25	3.25	3.50
1 1/2	1.91	3.375	3.75	3.75	3.75	3.875
2	2.38	4.125	4.375	4.375	4.375	5.625
2 1/2	2.88	4.875	5.125	5.125	5.125	6.50
3	3.50	5.375	5.875	5.875	5.875	6.625
4	4.50	6.875	7.125	7.00	7.625	8.125
5	5.56	7.75	8.50	8.375	9.50	9.75
6	6.62	8.75	9.875	9.75	10.50	11.375
8	8.62	11	12.125	12.00	12.625	14.125
10	10.75	13.375	14.25	14.125	15.75	17.125
12	12.75	16.125	16.625	16.50	18.00	19.625

Price Of Nickel Flanges

Product	Price (USD)
Stainless Steel Forged Flanges	$2.05 - $10.06 / Piece (FOB Price)
Stainless Steel Blind Flanges	$2.05 - $10.06 / Piece (FOB Price)
Stainless Steel Slip On Flange	$2.05 - $10.06 / Piece (FOB Price)
Stainless Steel Socketweld Flanges	$2.05 - $10.06 / Piece (FOB Price)
Stainless Steel Long Weld Neck Flanges	$2.05 - $10.06 / Piece (FOB Price)