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Super Duplex Steel UNS S32750 Flanges

API 6A Type 6BX 10000 PSI Flanges

Table of Content

Super duplex UNS S32750 flanges are high-performance piping components made from a super duplex stainless steel offering exceptional strength & corrosion resistance. These flanges are also known as super duplex 2507. Due to its dual-phase microstructure of austenite & ferrite, it delivers the strength of both the materials rather than the austenitic stainless steel grades. Super Duplex Steel S32750 flanges provide outstanding resistance to pitting, crevice corrosion & stress corrosion cracking in chloride-rich or aggressive environments.

These flanges are designed to be used in high pressure & temperature applications, to offer a minimum yield strength of 80 ksi & tensile strength of 116 ksi. They are available in many types, such as weld neck, slip-on, socket weld, blind, threaded & orifice flanges with pressure classes from 150 to 2500 & sizes ranging from ½ inch to 48 inches. As they have excellent thermal conductivity, dimensional stability & good weldability, these flanges ensure long-term performance. Whether for pipeline connections, structural assemblies or pressure systems, Super Duplex UNS S32750 flanges will be a top choice for critical industrial applications.

Super Duplex Steel Flanges UNS S32750 Manufacturer & Supplier

Kalpataru Piping Solutions is a trusted manufacturer, supplier & exporter of super duplex steel UNS S32750 flanges in India & South Africa offering premium-grade flange solutions built for strength, durability & corrosion resistance. We specialize in delivering super duplex S32750 flanges designed to meet the highest quality standards & supply to industries.

Made from super duplex stainless steel UNS S32750 (also known as Alloy 2507), our flanges feature a balanced austenitic-ferritic microstructure that delivers more strength than the austenitic stainless steel along with superior resistance to pitting, crevice corrosion & stress corrosion cracking to used in chloride-rich & offshore environments. As a reliable S32750 Super Duplex Flanges supplier, we cater to both bulk & customized orders with fast turnaround times, competitive pricing & global delivery.

Our UNS S32750 Super Duplex Flanges Offer:

  • High mechanical strength (80 ksi yield / 116 ksi tensile)
  • Temperature resistance and dimensional stability
  • Availability in a wide range of sizes (½” to 48”) and pressure ratings (Class 150 to 2500 / PN6 to PN64)
  • Compliance with international standards (ASTM A182, ASME B16.5, EN, DIN)
  • Exceptional resistance to aggressive chemicals and seawater

Why Choose Kalpataru Piping Solutions?

✔ In-house testing and quality inspection

✔ ISO-certified manufacturing facilities

✔ On-time delivery with secure export packaging

✔ Excellent customer support for technical queries & project consultation

Looking for top quality Super Duplex Flanges? Contact us today to request a quote or discuss your project needs. We are here to help you to get more durable and high-performance super duplex UNS S32750 flanges.

Enquire Now

Types of UNS Super Duplex Steel Flanges

As a top super duplex steel S32750 flanges manufacturer & supplier, we offers a wide range of super duplex steel S32750 flanges including Weld Neck, Slip-On, Blind, Orifice, Forged, Reducing, RTJ, SORF, Socket Weld, Threaded, Raised Face & Lap Joint Flanges. Designed for strength & corrosion resistance to be used in industrial applications in oil & gas, marine, chemical & power sectors. Available in multiple sizes, pressure classes & standards. We ensure precise, durable & high-performance connections meet your project needs.

Socket Weld Flange

Socket Weld Flanges

Threaded Lap Joint Flange

Threaded Lap Joint Flange

Raised Face Flanges

Raised Face Flanges

SORF Flange

SORF Flange

Weld Neck Flanges

Weld Neck Flanges

Blind Flanges

Blind Flanges

Orifice Flanges

Orifice Flanges

Forged Flanges

Forged Flanges

Reducing Flanges

Reducing Flanges

RTJ Flanges

RTJ Flanges

Slip-On Flanges

Slip‑On Flanges

Super Duplex Steel UNS S32750 Flanges Specifications

Explore detailed specifications of UNS S32750 Super Duplex Flanges, including size range, pressure classes, manufacturing standards, and available types like weld neck, slip-on & RTJ.

SORF Flanges Standards B16.47 Series ANSI/ASME B16.5, BS 10, B16.48, A & B, BS4504, DIN, EN-1092, ANSI / BS / ASME / EN / DIN Flanges, ASME/ANSI 16.36/B16.5/16.47B/16.47A, MSS S44, GOST Flanges, JISB2220, ISO70051, API7S-15, BS1560-3.1, API605, API7S-43, EN1092
Flanges Size Chart 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Flanges Pressure Calculation in DIN PN10, PN6, PN25, PN16, PN64, PN40/ 10Bar, 6Bar, 25Bar, 16Bar, 40Bar
Flanges Pressure Rating ANSI 150LBS, 900LBS, 1500LBS, 600LBS, 2500LBS 300LBS,
Flanges JIS 30K, 20K, 5K, 10K, 63K, 40K, 16K
Flanges UNI 16 Bar, 40 Bar, 10 Bar, 25 Bar, 6 Bar
basic types of Super Duplex 2507 Flanges Threaded / Plate/ Forged / Screwed
Coating on surface Anti-rust Paint, Cold and Hot Dip Galvanized, Oil Black Paint, Yellow Transparent, Zinc Plated
Flanges EN 6 Bar, 40 Bar, 10 Bar, 25 Bar, 16 Bar
Flanges Face and Connect Type Ring Type Joint (RTJ), Raised Face (RF), Large Male-Female (LMF), Flat Face (FF), Small Male-Female (SMF), Lap-Joint Face (LJF), Large Tongue & Groove, Small Tongue, Groove
Flanges Test UI trasonic flaw detector, Hydrostatic testing machine, Direct-reading Spectrograph, Magnetic particle and X-ray detector
Certificates Third Party Inspection Report, etc
Raw Materials Certificate
100% Radiography Test Report
EN 10204/3.1B
Flanges Equipment Press machine, Pushing Machine, Sand-blasting machine, electric bevelling machine, Bending machine etc
Origin of Flanges West Europe /Indian / USA / Japan / Korean
technique of Flanges Production
  • machined
  • Heat treated
  • Forged
Manufacturer of Saf 2507 Flanges

NFE, SABS, ANSI, AS2129, BS, JIS, AWWA, GOST, DIN, EN, UNI etc.
Super Duplex 2507 EN1092-1 Flanges, EN /BS/ ANSI Flanges, API 6A Flanges, DIN F/ ASME / UNI Flanges, BS4504 Flanges, JIS/ KS Flanges, GB / PSI / GOST Flanges, AWWA C207 Flanges

 

  • American standard (ANSI)
  • ANSI B16.47 Series A & B, ANSI B16.5, ASA, MSS SP44, AWWA, API-605, Custom need
  • ANSI B16.5, MSS SP44, ANSI B16.36/ B16.47/ B16.48
  • DIN: DIN 2527, 2633, 2642, 2632, 2576, 2631, 2634, 2656, 2655, 2566, 2627, 2629, 2573, 2637, 2641, 2638 2628, 2635, 2636,
  • German (DIN)
  • ANSI : ANSI B16.47(API605), ANSI B16.5, ANSI B16.36, MSS SP44, ANSI B16.48
  • other : EN1092-1, AWWA C207, JIS B2220; GOST12820, SABS1123; KS B1503, UNI2276, NFE29203
  • AS 2129: Table E; Table D; Table H
  • B.S: BS3293, BS4504 , BS10, BS1560
  • British standard
Special design As per customer requirement ANSI, AS, DIN , JIS and BS
15 NB (1/2 inch ) to 200 NB ( inch )
Configurations of Reducing and Equal
Flanges Export to Abu Dhabi , Gimhae-si, Pimpri-Chinchwad, Sydney, Calgary, Vadodara, Mumbai, Nagpur, Manama, Noida, Bengaluru, Howrah, Perth, Muscat, Bangalore, Bogota, Ahmedabad, Ernakulam, Karachi, Caracas, Gurgaon, Thiruvananthapuram, Chennai, Melbourne, Ankara, Istanbul, Damilimeteram, Indore, Ahvaz, Coimbatore, Kanpur, Janeiro, Tehran, Lagos, Gujarat, Baroda, London, Ranchi, India, Mexico, Courbevoie, Hyderabad, Montreal, Tau, Santiago, Khobar, Riyadh, Rajkot, Jamshedpur, Kolkata, Surat, Ludhiana, Kuwait, New Delhi, Port-of-Spain

Chemical Composition of UNS S32750 Super Duplex Flanges

Check the detailed chemical composition of Super Duplex S32750, enriched with high levels of chromium, molybdenum, and nitrogen—ensuring exceptional resistance to corrosion, pitting, and crevice attack in harsh environments.

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

Super Duplex Steel S32750 Flanges Mechanical Properties

Review the mechanical strength of S32750 Super Duplex Flanges, including high tensile (116 ksi) and yield (80 ksi) strength, perfect for high-pressure industrial applications.

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S32750 7.8 0.281 1350 2460

Dimension of Super Duplex Flanges S32750 Flanges

Get dimensional information about Super Duplex S32750 Flanges as per ASME/ANSI standards. Includes flange diameter, thickness, bolt hole sizes & face types.

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
5 10 0.94 7.31 6.44 8-0.88 8.5 3.5 5.56 5.05 1.44 5.66 0.44 1.44 5.69 0.94
6 11 1 8.5 7.56 8-0.88 9.5 3.5 6.63 6.07 1.56 6.72 0.5 1.56 6.75 1.06
8 13.5 1.12 10.62 9.69 8-0.88 11.75 4 8.63 7.98 1.75 8.72 0.5 1.75 8.75 1.25
10 16 1.19 12.75 12 12-1.00 14.25 4 10.75 10.02 1.94 10.88 0.5 1.94 10.92 1.31
12 19 1.25 15 14.38 12-1.00 17 4.5 12.75 12 2.19 12.88 0.5 2.19 12.92 1.56
14 21 1.38 16.25 15.75 12-1.12 18.75 5 14 13.25 2.25 14.14 0.5 3.12 14.18 1.63
16 23.5 1.44 18.5 18 16-1.12 21.25 5 16 15.25 2.5 16.16 0.5 3.44 16.19 1.75
18 25 1.56 21 19.88 16-1.25 22.75 5.5 18 17.25 2.69 18.18 0.5 3.81 18.2 1.94
20 27.5 1.69 23 22 20-1.25 25 5.69 20 19.25 2.88 20.2 0.5 4.06 20.25 2.13
22 29.5 1.81 25.25 24.25 20-1.38 27.25 5.88 22 21.25 3.13 22.22 0.5 4.25 22.25 2.38
24 32 1.88 27.25 26.12 20-1.38 29.5 6 24 23.25 3.25 24.25 0.5 4.38 24.25 2.5

Super Duplex Flanges UNS S32750 Weight Chart

Access the standard weight chart for UNS S32750 Super Duplex Flanges, helpful for load calculations, shipping logistics & engineering requirements.

Normal Sizes In inch Dimension Flanges Dimensional Sizes 1/2 inch. to 2 1/2 inch.
Class 125
Class 150		 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
inch. mm inch. millimeter inch. mm inch. mm inch. mm inch. mm inch mm
1/2 A 3 1/2 88.9 3 3/4 95.2 3 3/4 95.2 3 3/4 95.2 4 3/4 121 4 3/4 121 5 1/4 133.4
b 7/16 11.1 9/16 14.3 9/16 14.3 9/16 14.3 7/8 22.2 7/8 22.2 1 3/16 30.2
D2 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9
D1 2 3/8 60.3 2 5/8 66.7 2 5/8 66.7 2 5/8 66.7 3 1/4 82.6 3 1/4 82.6 3 1/2 88.9
n 4 4 4 4 4 4 4 4 4 4 4 – 4 44
d 5/8 15.9 5/8 15.9 5/8 15.9 5/8 15.9 7/8 22.2 7/8 22.2 7/8 22.2
3/4 A 3 7/8 98.4 4 5/8 117.5 4 5/8 117.5 4 5/8 117.5 5 1/8 130 5 1/8 130 5 1/2 139.7
b 1/2 12.7 5/8 15.9 5/8 15.9 5/8 15.9 1 25.4 1 25.4 1 1/4 31.8
D2 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9
D1 2 3/4 69.8 3 1/4 82.5 3 1/4 82.5 3 1/4 82.5 3 1/2 88.9 3 1/2 88.9 3 3/4 95.2
n 4 4 4 4 4 4 4 4 4 4 4 – 4 44
d 5/8 15.9 3/4 19 3/4 19 3/4 19 7/8 22.2 7/8 22.2 7/8 22.2
1 A 4 1/4 108 4 7/8 123.8 4 7/8 123.8 4 7/8 123.8 5 7/8 149.2 5 7/8 149.2 6 1/4 159
b 9/16 14.3 11/16 17.5 11/16 17.5 11/16 17.5 1 1/8 28.6 1 1/8 28.6 1 3/8 34.9
D2 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8
D1 3 1/8 79.4 3 1/2 88.9 3 1/2 88.9 3 1/2 88.9 4 102 4 102 4 1/4 108
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 15.9 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 25.4
1 1/4 A 4 5/8 117.5 5 1/4 133.4 5 1/4 133.4 5 1/4 133.4 6 1/4 159 6 1/4 159 7 1/4 184.2
b 5/8 15.9 3/4 19 13/16 20.6 13/16 20.6 1 1/8 28.6 1 1/8 28.6 1 1/2 38.1
D2 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5
D1 3 1/2 88.9 3 7/8 98.4 3 7/8 98.4 3 7/8 98.4 4 3/8 111 4 3/8 111 5 1/8 130
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 15.9 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 1/8 28.6
1 1/2 A 5 127 6 1/8 155.6 6 1/8 155.6 6 1/8 155.6 7 177.8 7 177.8 8 203
b 11/16 17.5 13/16 20.6 7/8 22.2 7/8 22.2 1 1/4 31.8 1 1/4 31.8 1 3/4 44.5
D2 2 7/8 73 98 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73
D1 3 7/8 4 4 1/2 114 4 1/2 114 4 1/2 114 4 7/8 124 4 7/8 124 5 3/4 146
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 . 15.9 7/8 22.2 7/8 22.2 7/8 22.2 1 1/8 28.6 1 1/8 28.6 1 1/4 31.8
2 A 6 152.4 6 1/2 165.1 6 1/2 165.1 6 1/2 165.1 8 1/2 215.9 8 1/2 215.9 9 1/4 234.9
b 3/4 19 7/8 22.2 1 25.4 1 25.4 1 1/2 38.1 1 1/2 38.1 2 50.8
D2 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1
D1 4 3/4 121 5 127 5 127 5 127 6 1/2 165.1 6 1/2 165.1 6 3/4 171
n 4 4 8 8 8 8 8 8 8 8 8 8 8 8
d 3/4 19 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 1/8 28.6
2 1/2 A 7 177.8 7 1/2 190.5 7 1/2 190.5 7 1/2 190.5 9 5/8 244 9 5/8 244 10 1/2 266.7
b 7/8 22.2 1 25.4 1 1/8 28.6 1 1/8 28.6 1 5/8 41.3 1 5/8 41.3 2 1/4 57.2
D2 4 1/8 104.8 4 1/8 104.8 4 1/8 104.8 4 1/8 104.8 4 1/8 105 4 1/8 105 4 1/8 105
D1 5 1/2 139.7 5 7/8 149.2 5 7/8 149.2 5 7/8 149.2 7 1/2 190.5 7 1/2 190.5 7 3/4 197
n 4 4 8 8 8 8 8 8 8 8 8 8 8 8
d 3/4 19 7/8 22.2 7/8 22.2 7/8 22.2 1 1/8 28.6 1 1/8 28.6 1 1/4 31.8

Equivalent Grades Of UNS S32750 Super Duplex Flanges

Compare UNS S32750 with equivalent grades like EN 1.4410 ensuring material compatibility for global standards.

STANDARD

WERKSTOFF NR.

UNS

Super Duplex 2507

1.4410

S32750

Dimensions standard of Class 150 Super Duplex S32750/ S32760 Flanges

Find standard dimensions for Class 150 Super Duplex Flanges, including S32750 and S32760 types, as per ANSI B16.5 for reliable fit and performance.

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)
  • ASME B1.20.1, Pipe Threads, General Purpose
  • ASME B16.1, Cast Iron Flanges and Flanged Fittings Classes 25, 125 and 250
  • ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24
  • ASME B16.11, Forged Fittings, Socket Welding and Threaded
  • ASME B16.25, Buttwelding Ends
  • ASME B16.36, Orifice Flanges
  • ASME B16.47, Large Diameter Steel Flanges NPS 26 Through NPS 60
  • ASME B31.1, Power Piping
  • ASME B31.3, Process Piping
  • ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay)

Sizes chart of Super Duplex Stainless Steel S32750 Orifice Flange

Understand the size chart for S32750 Orifice Flanges, covering diameter, thickness, pressure class, and orifice bore sizes for precision flow measurement systems to request quotes to meet your specific needs.

NPS

DN

4

100

3/4

20

3

80

2 1/2

65

2

50

1/2

15

1 1/4

32

1 1/2

40

1

25

Pressure Ratings of ANSI B16.5 Super Duplex UNS S32760 Blind Flange

Understand the pressure-temperature ratings of S32760 Blind Flanges under ANSI B16.5 ensuring safe operation in high-stress environments.

ASME/ANSI B 16.5 Slip on Flange, Welding Neck Flange, High Hub Blind Flange, Blind Flange,Lap Joint Flange, Socket Weld Flange, Ring Type Joint Flange, Threaded 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, Welding Neck Flange, Threaded Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1 Hubbed Slip on Flange, Welding Neck Flange, Lapped Pipe End Flange, Hubbed Threaded Flange, Loose Plate Flange, Plate Flange, Blank Flange, Loose Plate With Weld Neck Flange
PRESSURE CLASS PN 2.5 TO PN 40
BS 4504[PART 1] Welding Neck Flange, Plate Flange, Hubbed Slip-On Hubbed Threaded,Blank Flange, Loose Plate With Weld On Plate Collar
PRESSURE CLASS PN 2.5 TO PN 400
BS 1560 BOSS Socket Welding Flange, Welding Neck Flange, Blind Flange, Slip-On Flange, Lapped Flange, Screwed Boss Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS10 Plate Slip-On Flange, Welding Neck Flange, Slip-On Boss Flange, Screwed 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
PRESSURE CLASS PN 6 TO PN 100

Frequently Asked Questions About Super Duplex UNS S32750 Flanges Supplier

What is the difference between UNS S32750 and S32760 Flanges?
UNS S32750 & S32760 are both super duplex stainless steel grades having similar chemical compositions & mechanical properties. S32760 contains slightly higher amounts of molybdenum & tungste giving it enhanced corrosion resistance especially in more aggressive environments or highly acidic conditions. S32760 is often preferred for more demanding offshore & chemical processing applications S32750 is ideal for general high-strength, corrosion-resistant uses.
What are Super Duplex S32750 Flanges?
Super Duplex S32750 Flanges are high-performance pipe fittings made from UNS S32750 super duplex stainless steel. This material is known for its dual-phase microstructure (ferrite + austenite). These flanges offer twice the strength of conventional stainless steels (like 304/316) along with pitting & crevice corrosion. They are used in industries such as oil & gas, petrochemicals, marine, and desalination plants where both mechanical strength and corrosion resistance are critical.

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