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Alloy Steel Flanges

Industrial Forged & Machined Alloy Steel Flanges • ASTM A182 • F1, F5, F9, F11, F12, F22, F91 • ASME B16.5 • ASME B16.47

Alloy Steel Flange Manufacturer in India

Ganpat Metal is an Alloy Steel Flange Manufacturer in India supplying ASTM A182 / ASME SA182 alloy steel flanges for industrial piping, pressure systems, process plants and high-temperature applications. We offer F5, F9 and F11 grades in multiple flange types, pressure classes and sizes.

Alloy Steel Flanges

Our alloy steel flanges are available in ½″ to 36″, with pressure classes from 150# to 2500# and configurations including Weld Neck, Slip On, Socket Weld, Blind, Lap Joint, Threaded, Orifice, Spectacle Blind and other project-specific designs.

Specifications of Alloy Steel Flanges

Alloy Steel Flanges Technical Data & Specifications Matrix

Specifications of Alloy Steel Flanges

Category Specification Details
Standards ANSI Flanges, ASME Flanges, API, MSSP, BS Flanges, DIN Flanges, EN Flanges, NACE etc.
Grade ASTM / ASME A182 F1 / F5 / F9 / F11 / F22 / F91
Pressure Class 150#, 300#, 400#, 600#, 900#, 1500# & 2500#
Size ½″ to 36″
Pressure Ratings 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64
Wall Thickness SCH.10, 20, 30, 40, 80, 120, 160, STD, XS, XXS
Types Slip On, Weld Neck, Socket Weld, Blind, Lap Joint, Screwed, Long Weld Neck, Reducing, Spectacle, Ring Joint
Connection / Face Types SORF, WNRF, SWRF, BLRF, Lapped Joint, Screwed, RTJ and other specified configurations
Production Process Machined, Forged, Heat Treated

Chemical Composition of Alloy Steel Flanges

Grade C Mn Si P S Cr Mo
F1 0.15 max 0.3–0.6 0.5 0.03 0.03 4–6 0.44–0.65
F5 0.15 max 0.3–0.6 0.5–1.0 0.03 0.03 4–6 0.44–0.65
F9 0.15 max 0.3–0.6 0.5–1.0 0.03 0.03 8–10 0.9–1.1
F11 0.5–0.15 0.3–0.6 0.5–1.0 0.03 0.03 1.0–1.5 0.44–0.65
F12 0.15 max 0.3–0.6 0.5 0.03 0.03 4–6 0.44–0.65
F22 0.50.15 max 0.3–0.6 0.5 0.03 0.03 4–6 0.44–0.65
F91 0.15 max 0.3–0.6 0.5–1.0 0.03 0.03 8–10 0.9–1.1

Mechanical Properties of Alloy Steel Flanges

Grade Tensile Strength Yield Strength (0.2% Offset) Elongation
F1 275 485 20%
F5 275 485 20%
F9 380 585 20%
F11 205 415 20%
F12 275 485 20%
F22 205 415 20%
F91 380 585 20%

Alloy Steel Flange Pressure Ratings

Temperature °F #900 #300 #600 #400 #2500 #150 #1500
-20 to 100 2085 695 1390 925 5785 265 3470
200 2035 680 1360 905 5660 260 3395
300 1955 655 1305 870 5435 230 3260
400 1920 640 1280 855 5330 200 3200
500 1865 620 1245 830 5180 170 3105
600 1815 605 1210 805 5040 140 3025
650 1765 590 1175 785 4905 125 2940
700 1705 570 1135 755 4730 110 2840
750 1595 530 1065 710 4430 95 2660
800 1525 510 1015 675 4230 80 2540
850 1460 485 975 650 4060 65 2435
900 1350 450 900 600 3745 50 2245
950 845 280 560 375 2345 35 1405
1000 495 165 330 220 1370 20 825

Alloy Steel Flange Dimensions

NPS Outside Dia. Flange Thickness Diameter of Hub Raised Face Dia. Bore Fillet Radius Dia. of Hub Socket Depth
½ 3-1/2 7/16 1-3/16 1-3/8 .90 .88 1/8 .84
¾ 3-7/8 1/2 1-1/2 1-11/16 1.11 1.09 1/8 1.05
1 4-1/4 9/16 1-15/16 2 1.38 1.36 1/8 1.32
1-1/4 4-5/8 5/8 2-5/16 2-1/2 1.72 1.70 3/16 1.66
1-1/2 5 11/16 2-9/16 2-7/8 1.97 1.95 1/4 1.90
2 6 3/4 3-1/16 3-5/8 2.46 2.44 5/16 2.38
2-1/2 7 7/8 3-9/16 4-1/8 2.97 2.94 5/16 2.88
3 7-1/2 15/16 4-1/4 5 3.60 3.57 3/8 3.50
3-1/2 8-1/2 15/16 4-13/16 5-1/2 4.10 4.07 3/8 4.00
4 9 15/16 5-5/16 6-3/16 4.60 4.57 7/16 4.50
5 10 15/16 6-7/16 7-5/16 5.69 5.66 7/16 5.56
6 11 1 7-9/16 8-1/2 6.75 6.72 1/2 6.63
8 13-1/2 1-1/8 9-11/16 10-5/8 8.75 8.72 1/2 8.63
10 16 1-3/16 12 12-3/4 10.92 10.88 1/2 10.75
12 19 1-1/4 14-3/8 15 12.92 12.88 1/2 12.75
14 21 1-3/8 15-3/4 16-1/4 14.18 14.14 1/2 14.00
16 23-1/2 1-7/16 18 18-1/2 16.19 16.16 1/2 16.00
18 25 1-9/16 19-7/8 21 18.20 18.18 1/2 18.00
20 27-1/2 1-11/16 22 23 20.25 20.20 1/2 20.00
24 32 1-7/8 26-1/8 27-1/4 24.25 24.25 1/2 24.00

Alloy Steel Flange Dimensions by Standard

Standard Class Bolt Circle Dia. Dia. Bolt Size Dia. of Bolt Hole No. of Bolts
AS 2129 Flange Table D 67 95 13 14 4
AS 2129 Table C 67 95 13 14 4
AS 2129 Table F 67 95 13 14 4
AS 2129 Table J 83 114 16 17 4
AS 2129 Table H 83 114 16 17 4
AS 2129 Table E 67 95 13 14 4
AS4087 PN14 67 95 M12 14 4
ISO 7005 (DIN) Flange PN16 65 95 M12 14 4
ISO 7005 (DIN) Flange PN10 65 95 M12 14 4
ISO 7005 (DIN) Flange PN25 65 95 M12 14 4
ISO 7005 (DIN) Flange PN20 60.5 90 M14 16 4
ISO 7005 (DIN) Flange PN6 55 80 M10 11 4
ISO 7005 (DIN) Flange PN40 65 95 M12 14 4
ANSI B16.5 ANSI 150 60 89 13 16 4
ANSI B16.5 ANSI 900 83 121 19 22 4
ANSI B16.5 ANSI 600 67 95 13 16 4
ANSI B16.5 ANSI 1500 83 121 19 22 4
ANSI B16.5 ANSI 300 67 95 13 16 4

Alloy Steel Flange Weight Chart

Class Nominal Pipe Size Threaded Flange Slip On Flange Socket Weld Flange Blind Flange Lap Joint Flange Weld Neck Flange
150 lb ½ 1 1 2 2 1 2
150 lb ¾ 2 2 2 2 2 2
150 lb 1 2 2 2 2 2 3
150 lb 1¼ 3 3 3 3 3 3
150 lb 1½ 3 3 3 4 3 4
150 lb 2 5 5 5 5 5 6
150 lb 2½ 8 8 8 7 8 10
150 lb 3 9 9 9 9 9 11.5
150 lb 3½ 12 11 11 13 11 12
150 lb 4 13 13 13 17 13 16.5
150 lb 5 15 15 15 20 15 21
150 lb 6 19 19 19 27 19 26
150 lb 8 30 30 30 47 30 42
150 lb 10 43 43 43 70 43 54
150 lb 12 64 64 64 123 64 88
150 lb 14 90 90 90 140 105 114
150 lb 16 98 106 98 180 140 140
150 lb 18 130 130 130 220 160 165
150 lb 20 165 165 165 285 195 197
150 lb 22 185 185 185 355 245 225

Alloy Steel Flange Weight Calculator

Select Alloy Steel Flange parameters and click the "Calculate Weight" button to reveal exact weight.

Alloy Steel Flange Grades

Ganpat Metal supplies alloy steel flanges in multiple ASTM A182 / ASME SA182 grades for different industrial and piping requirements.

  • ASTM A182 F5 Flanges
  • ASTM A182 F9 Flanges
  • ASTM A182 F11 Flanges

Additional A182 grades can be supplied according to project specifications and availability.

Alloy Steel Flange Types

Alloy Steel Reducing Flange
Alloy Steel Reducing Flange
Chromoly AISI 4130 Lap Joint Flange
Chromoly AISI 4130 Lap Joint Flange
Low Alloy Steel Spectacle Blind Flanges
Low Alloy Steel Spectacle Blind Flanges
4130 Alloy Steel SORF Flanges
4130 Alloy Steel SORF Flanges
Chrome Moly Weldo Flange
Chrome Moly Weldo Flange
Low Alloy Steel Square Flanges
Low Alloy Steel Square Flanges
Low Alloy Steel High Hub Blind Flanges
Low Alloy Steel High Hub Blind Flanges
High Alloy Steel BLRF Flanges
High Alloy Steel BLRF Flanges
4130 Alloy Steel Forged Flanges
4130 Alloy Steel Forged Flanges
AS Weld Neck Flanges Series A or B
AS Weld Neck Flanges Series A or B
Chromoly Expander Flange
Chromoly Expander Flange
SCM415 Chromoly RTJ Flanges
SCM415 Chromoly RTJ Flanges
Chromoly 4130 Screwed Flanges
Chromoly 4130 Screwed Flanges
Chromium Alloy Steel Threaded Flange
Chromium Alloy Steel Threaded Flange
4150 Alloy Steel WNRF Flanges
4150 Alloy Steel WNRF Flanges
Low Alloy Steel Tongue and Groove Flange
Low Alloy Steel Tongue and Groove Flange
Chromoly Alloy Ring Joint Flanges
Chromoly Alloy Ring Joint Flanges
Alloy Steel Socket Weld Flanges
Alloy Steel Socket Weld Flanges
Chromoly Orifice Flange and Plate
Chromoly Orifice Flange and Plate
4145 Alloy Steel Nipo Flange
4145 Alloy Steel Nipo Flange
Chromium Alloy Steel SWRF Flanges
Chromium Alloy Steel SWRF Flanges

Alloy Steel Flange Standards

  • ASTM A182
  • ASME SA182
  • ANSI
  • ASME
  • API
  • MSS
  • BS
  • DIN
  • EN
  • NACE
  • Applicable project and piping specifications

Alloy Steel Flange Pressure Classes

  • 150#
  • 300#
  • 400#
  • 600#
  • 900#
  • 1500#
  • 2500#
  • PN6
  • PN10
  • PN16
  • PN25
  • PN40
  • PN64

Alloy Steel Flange Sizes

Size Range: ½″ to 36″

NPS sizes according to applicable flange standard

  • SCH.10
  • SCH.20
  • SCH.30
  • SCH.40
  • SCH.80
  • SCH.120
  • SCH.160
  • STD
  • XS
  • XXS

Alloy Steel Flange Manufacturing

Ganpat Metal supplies alloy steel flanges manufactured through forging, machining and heat treatment according to applicable material and purchase requirements.

The production process can include forging, heat treatment, machining, face finishing, bore machining, bolt-hole drilling, dimensional inspection and final identification.

Alloy Steel Flange Inspection and Testing

  • Chemical composition testing
  • Tensile strength testing
  • Yield strength testing
  • Elongation testing
  • Hardness testing
  • Dimensional inspection
  • Visual inspection
  • Surface inspection
  • PMI where specified
  • UT where specified
  • MT where specified
  • Material Test Certificate (MTC)
  • Third-party inspection where specified

Alloy Steel Flange Applications

  • Oil & Gas
  • Refineries
  • Petrochemical Plants
  • Chemical Processing
  • Power Generation
  • Process Piping
  • High-Temperature Piping
  • Pressure Piping
  • Pipeline Systems
  • Thermal Power Plants
  • Process Plants
  • Boiler Systems
  • Heat Exchanger Systems
  • Industrial Equipment
  • Engineering Projects

Alloy Steel Flange Manufacturer and Supplier in India

Ganpat Metal supplies Alloy Steel Flanges in India for industrial piping, process equipment, pressure systems and engineering projects. Our range includes ASTM A182 / ASME SA182 grades with multiple types, pressure classes, sizes and connection configurations.

We support requirements for standard and project-specific flange configurations, along with applicable inspection and material documentation. Ganpat Metal holds ISO certification and MSME registration as part of its business and quality credentials.

For pricing and availability, provide the required grade, size, flange type, pressure class, face, standard, quantity, testing requirements and delivery location.

Alloy Steel Flange Export Countries

India flag India Brazil flag Brazil New Zealand flag New Zealand Australia flag Australia Bangladesh flag Bangladesh Malaysia flag Malaysia UAE flag UAE Saudi Arabia flag Saudi Arabia Oman flag Oman Egypt flag Egypt Spain flag Spain Russia flag Russia Kazakhstan flag Kazakhstan

Why Choose Ganpat Metal for Alloy Steel Flanges?

  • ASTM A182 / ASME SA182 alloy steel flange supply
  • F5, F9 and F11 grade availability
  • Multiple alloy steel grades according to requirement
  • ½″ to 36″ size range
  • 150# to 2500# pressure classes
  • Forged and machined flange options
  • Multiple flange configurations
  • RF, FF, RTJ and other specified face configurations
  • Inspection and testing support
  • Material Test Certificate availability
  • ISO certification
  • MSME registration
  • Domestic and export supply capability

Request a Quote for Alloy Steel Flanges

Send your Alloy Steel Flange requirement to Ganpat Metal with the grade, size, flange type, pressure class, face type, applicable standard and quantity.

For project and bulk requirements, include inspection, testing, documentation and delivery requirements to receive a quotation aligned with your specification.

Related Alloy Steel Flanges

Explore the specific alloy steel grades supplied by Ganpat Metal: