Super Duplex Steel Flanges

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Super duplex steel flanges are designed for heavy industrial applications that require strong structural integrity. The components have minimal thermal expansion and strong thermal conductivity and have excellent resistance to localized pitting, crevice corrosion and chloride stress cracking. It’s why grades such as ASTM A182 Duplex UNS UNS S32750 and S32760 can perform so well in brackish water, marine settings, bleaching cycles and food processing lines.

These items are manufactured by Metracore Alloys, a leading super duplex steel flange manufacture with high quality standards. Our production lines guarantee dimensional precision, robust mechanical strength and optimum resilience to hostile fluids in every batch of super duplex steel flanges. Such components are expected to work under severe loads and reduce maintenance costs in long term by the optimization of the balanced microstructure of the alloy. The consequence is improved system flow. Request an estimate for your unique piping network configurations today!

Super Duplex Steel Flanges, Super Duplex Stainless Steel Flange, Super Duplex Flanges, Super Duplex Steel Flanges Manufacturer

These super duplex steel flanges come with strong mechanical properties and reliable specifications. Standards include ASTM A182 / ASME SA182 with grades UNS S32750, S32760, S32950, F51, F53, and F55. Sizes range from 1/8″NB to 48″NB. They show exceptional resistance to chlorides, including stress corrosion cracking (SCC). The higher chromium, molybdenum, and nitrogen levels give a PREN above 40, making them highly resistant to pitting and crevice corrosion. They also show strong resistance to sulfuric acid. Mechanically, they offer higher yield and tensile strength than standard duplex steels while keeping good ductility and formability. They also have excellent fatigue resistance, good weldability, and can absorb high energy during operation.

Super duplex flanges are frequently used in sectors where resistance to corrosion is crucial. Due to their enhanced resistance to pitting and crevice corrosion, Duplex Steel S32205 Flanges are frequently used in chemical processing facilities, desalination plants, and seawater systems. Additionally, they are employed in the food processing, municipal waterworks, pulp and paper, oil and gas, nuclear power plants, and fossil fuel power plants. Heat exchangers, fluid piping, textile equipment, and pharmaceutical processing are some additional uses. Raw super duplex steel is forged or rolled, then machined, heated, solution-annealed and quenched to create these flanges. Each flange is tested with dimensional checks and non-destructive methods to ensure quality.

All of our super duplex stainless steel flanges are certified to ASTM, ASME, and EN standards. They comply with dimensional norms such as ASME B16.5 and EN1092. Each product is supplied with mill test certificates (MTCs) confirming chemical composition, mechanical properties, and pressure ratings. To safeguard the flanges during handling and transportation, packaging options include palletised crates, bubble wrap, seaworthy cases and wooden boxes. As a renowned super duplex flanges manufacturer in India, we ensure that each flange satisfies international performance and dependability standards.

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Table of Content

Super Duplex Steel Flanges Specification

Types of Super Duplex Steel Flanges

Super Duplex Steel Flanges Face Forms

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Technical Details of Super Duplex Steel Flanges

Super Duplex Flange Pressure Rating

Temperature In °F	Working Pressure in Class 75 to 2500 In PSI
Temperature In °F	CL 75	CL 150	CL 300	CL 400	CL 600	CL 900	CL 1500	CL 2500
-20~100	145	290	750	1000	1500	2250	3750	6250
200	130	260	745	990	1490	2230	3720	6200
400	100	200	615	820	1230	1845	3070	5120
600	70	140	555	740	1115	1670	2785	4640
700	–	110	540	725	1085	1625	2710	4520

Super Duplex Blind Flange Tensile Strength

Grade	A182 F53	A182 F55
Tensile Strength, Min. (KSI)	116	109

SDSS Weld Neck Flanges Hardness

Grade	A182 F53	A182 F55
Hardness, (Maximum) Brinell	310	300

ASME SA182 Super Duplex Steel Flanges Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS
Super Duplex S2507	1.4410	S32750 / S32950

Chemical Composition of Super Duplex Steel Pipe Flanges

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N	Fe
S32750	0.030 max	1.20 max	0.80 max	0.035 max	0.020 max	24.00 – 26.00	3.00 – 5.00	6.00 – 8.00	0.24 – 0.32	58.095 min
S32760	0.05 max	1.00 max	1.00 max	0.030 max	0.010 max	24.00 – 26.00	3.00 – 4.00	6.00 – 8.00	0.20 – 0.30	57.61 min

Mechanical Properties of Super Duplex Steel Flanges

Grades	Density (g/cm³)	Density (lb/in³)	Melting Point (°C)	Melting Point (°F)
S32750 / S32760	7.8	0.281	1350	2460

Manufacturing Process of Super Duplex Steel Flanges

Super Duplex Steel Flanges Application

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