ASTM A182 is a standard specification for forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts used in high-temperature service. Among the various alloy steel grades covered by this specification, ASTM A182 F91 stands out as a popular choice for applications requiring high-temperature strength and corrosion resistance.
ASTM A182 F91 flanges are widely used in industries such as petrochemical, power generation, and oil and gas. These flanges are specifically designed for use in high-temperature, high-pressure environments, making them suitable for critical applications like steam and superheated steam transport.
Alloy Steel F91 Flange, ASTM A182 F91 Flanges, ASTM A182 F91 Flanges Supplier, A182 F91 Flanges, ALLOY STEEL ASTM A182 GRADE F91 Flanges, F91 CLASS 2 SORF Flange, ASTM A182 GRADE F91 Flanges, Alloy Steel F91 Flanges Manufacturer in Mumbai, India.
Table of Content
- About Alloy Steel ASTM A182 F91 Flanges
- Specification For Alloy Steel ASTM A182 F91 Flanges
- Equivalent Grades Of Alloy Steel ASTM A182 F91 Flanges
- Various Types of AS ASTM A182 F91 Flanges
- Ready Stock Of Chrome Moly ASTM A182 F91 Flanges
- AS ASTM A182 F91 Flanges Dimension
- Size Chart of ASTM A182 F91 Alloy Steel Flanges
- Weight Chart of ASTM A182 F91 Chromium Molybdenum Flanges
- Alloy Steel ASTM A182 F91 Flanges Chemical Composition
- Alloy Steel A182 F91 Flanges Mechanical Properties
- We Serve application Industry
- We Export ASTM A182 F91 CrMo Flanges Across the Globe
- Domestic Supply ASTM A182 F91 Cr-Mo Flanges
AS F91 Flanges, ASTM A182 F91 Flanges Manufacturer, SA182 F91 Flange, A182 F91 CLASS 2 Flanges, A182 F91 Alloy Steel Flange, GRADE F91 BLIND Flange, ASME SA182 GR F91 Slip On Flange, Alloy Steel A182 F91 Flanges Stockist in India.
Key features of ASTM A182 F91 flanges:
1. High-Temperature Strength: F91 alloy steel is known for its exceptional strength and durability at elevated temperatures. It can withstand temperatures of up to 600°C (1,112°F), making it an ideal choice for applications involving hot gases and liquids.
2. Corrosion Resistance: F91 alloy steel contains chromium and molybdenum, which enhance its corrosion resistance. This property is crucial in environments where exposure to corrosive substances is common.
3. Weldability: ASTM A182 F91 flanges are readily weldable using various welding processes. This makes installation and maintenance more convenient.
4. Excellent Mechanical Properties: F91 steel has excellent mechanical properties, including high tensile and yield strength, which ensures the flanges can withstand the stresses and pressures encountered in high-temperature applications.
5. Precise Dimensional Standards: ASTM A182 specifies the dimensions, tolerances, and materials for F91 flanges, ensuring consistency and compatibility in various systems.
6. Versatility: These flanges come in a variety of types, including slip-on, weld neck, socket weld, and blind flanges, providing flexibility for different piping systems and connection methods.
Specification For Alloy Steel A182 F91 Flanges
| Standards | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Flange Face Types | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
STOCKIST & SUPPILERS FOR ALLOY STEEL A182 F91 FLANGES IN INDIA, CUSTOM SIZES ASTM A182 F91 CHROME MOLY STEEL SORF, WNRF, Blind Flanges AS PER CLIENT REQUIREMENT
Equivalent Grades Of ASTM A182 F91 Alloy Steel Flanges
| STANDARD | UNS | WERKSTOFF NR. | EN | DIN |
| Alloy Steel F91 | K90901 | 1.4903 | 9Cr-1Mo-V | X 10 CrMoVNb 9 1 |
Various Types of Alloy Steel A182 F91 Flanges
ASTM A182 F91 Slip On Flanges
- ASTM 182 F91 Alloy Steel Slip On Flanges
- ANSI B16.5 CrMo F91 Slip On Flanges
- Chromium Molybdenum A182 F91 Slip On Flanges
- A182 AS Grade F91 Slip On Flanges
- Alloy Steel A182 Gr.F91 SOFF Flanges
- Cr-Mo ASTM A182 F91 Slip On Flange
- ASTM A182 Chrome Moly F91 SORF Flange
ASTM A182 F91 Socket Weld Flanges
- Cr-Mo ASTM A182 F91 SocketWeld Flange
- Chrome Moly A182 Gr.F91 SWFF Flanges
- ASTM A182 Chromium Molybdenum Grade F91 SWRF Flange
- Alloy Steel A182 F91 SocketWeld Flanges
- ASTM 182 F91 Alloy Steel Socket Weld Flanges
- ANSI B16.5 CrMo F91 Socket Weld Flanges
- A182 AS F91 Socket Weld Flanges
ASTM A182 F91 Blind Flanges
- Alloy Steel ASTM A182 F91 Blind Flange
- ASTM 182 F91 Alloy Steel Blind Flanges
- A182 AS F91 Blind Flanges
- Cr-Mo A182 F91 Blind Flanges
- ASTM A182 Chromium Molybdenum F91 BLRF Flange
- Chrome Moly A182 Gr.F91 BLFF Flanges
- ANSI B16.5 AS F91 Blind Flanges
ASTM A182 F91 Weld Neck Flanges
- Cr-Mo A182 F91 Weld Neck Flanges
- ASTM 182 F91 Alloy Steel Weld Neck Flanges
- A182 AS F91 Weld Neck Flanges
- ANSI B16.5 AS F91 Weld Neck Flanges
- ASTM A182 Chromium Molybdenum Grade F91 WNRF Flange
- Alloy Steel ASTM A182 F91 Weld Neck Flange
- Chrome Moly A182 Gr.F91 WNFF Flanges
ASTM A182 F91 Threaded Flanges
- ASTM A182 Chromium Molybdenum Grade F91 Screwed Flange
- ANSI B16.5 AS F91 Threaded Flanges
- Alloy Steel ASTM A182 F91 Threaded Flange
- A182 AS F91 Threaded Flanges
- Chrome Moly A182 Gr.F91 Screwed Flanges
- Cr-Mo A182 F91 Threaded Flanges
- ASTM 182 F91 Alloy Steel Threaded Flanges
ASTM A182 F91 Lap Joint Flanges
- ASTM A182 Chromium Molybdenum F91 Lap Joint Flange
- Chrome Moly A182 Gr.F91 LJ Flanges
- A182 AS F91 Lap Joint Flanges
- ASTM 182 F91 Alloy Steel Lap Joint Flanges
- ANSI B16.5 AS F91 Lap Joint Flanges
- Cr-Mo A182 F91 Lap Joint Flanges
- Alloy Steel ASTM A182 F91 Lap Joint Flange
Ready Stock Of Alloy Steel A182 F91 Flanges
- AS A182 F91 Tongue & Groove Flanges
- Chrome Moly A182 F91 Long Weld Neck Flanges
- ANSI B16.5 Alloy Steel F91 Class 300 Flanges Dimensions
- AS A182 Gr F91 Flanges
- ASTM A182 Grade F91 CrMo Reducing Flanges
- A182 F91 Alloy Steel SORTJ Flange
- ASTM A182 CrMo Grade F91 Plate Flanges
- ASTM A182 F91 Alloy Steel Ring Type Joint Flanges
- Alloy Steel ASTM A182 Gr.F91 DIN Flanges
- ASTM A182 F91 Cr-Mo Spectacle Blind Flanges
- A182 F91 Chrome Moly Spacer Ring Flanges
- ASME B16.5 Class 150 Alloy Steel F91 Flanges
- A182 F91 Chromium Molybdenum Pipe Flange
- ASTM A182 F91 Alloy Steel Square Flanges
- ASTM A182 F91 Alloy Steel Raised Face Flanges
- AS ASTM A182 F91 Orifice Flange
- A182 CrMo F91 Slip On Flat Face Flanges
- Cr-Mo A182 Gr F91 Flat Face Flange
- ASTM A182 Alloy Steel F91 Lap Joint Flanges
- Chrome Moly ASTM A182 F91 Flanges
- ASTM A182 Gr.F91 AS Large Diameter Flange
- ASTM A182M Alloy Steel Grade F91 Flange
- Chrome Moly A182 F91 Forged Flanges
- Alloy Steel A182 Gr F91 Screwed Flanges
- Alloy Steel A182 F91 BLRTJ Flanges
- CrMo A182 F91 Nipoflange
- Chromium Molybdenum A182 F91 NPT Threaded Flanges
- ASTM A182 F91 CrMo Male & Female Flanges
- Alloy Steel ASTM A182 F91 Industrial Flange
- Cr-Mo ASTM A182 Grade F91 Flangeolet
- ASTM A182 AS Gr F91 Paddle Blank and Spacer
- Cr-Mo A182 F91 SORF Flanges
- A182 F91 Chromium Molybdenum Blind Flange
- ASTM A182 Gr.F91 CrMo Exhaust Flanges
- Cr-Mo A182 F91 SWRTJ Flanges
- A182 F91 Chromium Molybdenum Flange Pressure Rating
- A182 F91 Alloy Steel Custom Flanges
ASTM A182 F91 Alloy Steel Flange Dimensions
| NPS (in.) | Alloy Steel A182 Flange Dimensions | ||||
|---|---|---|---|---|---|
| Dia. of Flange (in.) | No. of Bolts | Dia. of Bolts (in.) | Dia. of Bolt Holes (in.) | Bolt Circle (in.) | |
| 1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
| 1/2 | 3-1/2 | 4 | 1/2 | 0.62 | 2-3/8 |
| 3/4 | 3-7/8 | 4 | 1/2 | 0.62 | 2-3/4 |
| 1 | 4-1/4 | 4 | 1/2 | 0.62 | 3-1/8 |
| 1-1/4 | 4-5/8 | 4 | 1/2 | 0.62 | 3-1/2 |
| 1-1/2 | 5 | 4 | 1/2 | 0.62 | 3-7/8 |
| 2 | 6 | 4 | 5/8 | 0.75 | 4-3/4 |
| 2-1/2 | 7 | 4 | 5/8 | 0.75 | 5-1/2 |
| 3 | 7-1/2 | 4 | 5/8 | 0.75 | 6 |
| 3-1/2 | 8-1/2 | 8 | 5/8 | 0.75 | 7 |
| 4 | 9 | 8 | 5/8 | 0.75 | 7-1/2 |
| 5 | 10 | 8 | 3/4 | 0.88 | 8-1/2 |
| 6 | 11 | 8 | 3/4 | 0.88 | 9-1/2 |
| 8 | 13-1/2 | 8 | 3/4 | 0.88 | 11-3/4 |
| 10 | 16 | 12 | 7/8 | 1 | 14-1/4 |
| 12 | 19 | 12 | 7/8 | 1 | 17 |
| 14 | 21 | 12 | 1 | 1.12 | 18-3/4 |
| 16 | 23-1/2 | 16 | 1 | 1.12 | 21-1/4 |
| 18 | 25 | 16 | 1-1/8 | 1.25 | 22-3/4 |
| 20 | 27-1/2 | 20 | 1-1/8 | 1.25 | 25 |
| 24 | 32 | 20 | 1-1/4 | 1.38 | 29-1/2 |
Size Chart of ASTM A182 F91 Alloy Steel Flanges
| Nominal Pipe Size | Outside Diameter of Flanges | Thickness of Flanges | Diameter of Raised Face | Diameter of Hub at Base | Length Thru Hub | Diameter or Bore | Diameter of Hub at Bevel | Radius of Fillet | Depth of Socket | |||
| Welding Neck | Slip-On Threaded Socket | Lap Joint | Slip-on Socket | Lap Joint | ||||||||
| O | Q | R | X | Y | Y | Y | W | B | H | r | Z | |
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 1-7/8 | 5/8 | 5/8 | .88 | .90 | .84 | 1/8 | 3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 2-1/16 | 5/8 | 5/8 | 1.09 | 1.11 | 1.05 | 1/8 | 7/16 |
| 1 | 4-1/4 | 9/16 | 2 | 1-15/16 | 2-3/16 | 11/16 | 11/16 | 1.36 | 1.38 | 1.32 | 1/8 | 1/2 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 2-5/16 | 2-1/4 | 13/16 | 13/16 | 1.70 | 1.72 | 1.66 | 3/16 | 9/16 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 2-9/16 | 2-7/16 | 7/8 | 7/8 | 1.95 | 1.97 | 1.90 | 1/4 | 5/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 2-1/2 | 1 | 1 | 2.44 | 2.46 | 2.38 | 5/16 | 11/16 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 3-9/16 | 2-3/4 | 1-1/8 | 1-1/8 | 2.94 | 2.97 | 2.88 | 5/16 | 3/4 |
| 3 | 7-1/2 | 15/16 | 5 | 4-1/4 | 2-3/4 | 1-3/16 | 1-3/16 | 3.57 | 3.60 | 3.50 | 3/8 | 13/16 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 4-13/16 | 2-13/16 | 1-1/4 | 1-1/4 | 4.07 | 4.10 | 4.00 | 3/8 | 7/8 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 3 | 1-5/16 | 1-5/16 | 4.57 | 4.60 | 4.50 | 7/16 | 15/16 |
| 5 | 10 | 15/16 | 7.5/16 | 6-7/16 | 3-1/2 | 1-7/16 | 1-7/16 | 5.66 | 5.69 | 5.56 | 7/16 | 15/16 |
| 6 | 11 | 1 | 8-1/2 | 7-9/16 | 3-1/2 | 1-9/16 | 1-9/16 | 6.72 | 6.75 | 6.63 | 1/2 | 1-1/16 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 9-11/16 | 4 | 1-3/4 | 1-3/4 | 8.72 | 8.75 | 8.63 | 1/2 | 1-1/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 4 | 1-15/16 | 1-15/16 | 10.88 | 10.92 | 10.75 | 1/2 | 1-5/16 |
| 12 | 19 | 1-1/4 | 15 | 14-3/8 | 4-1/2 | 2-3/16 | 2-3/16 | 12.88 | 12.92 | 12.75 | 1/2 | 1-9/16 |
| 14 | 21 | 1-3/8 | 16-1/4 | 15-3/4 | 5 | 2-1/4 | 3-1/8 | 14.14 | 14.18 | 14.00 | 1/2 | 1-5/8 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 18 | 5 | 2-1/2 | 3-7/16 | 16.16 | 16.19 | 16.00 | 1/2 | 1-3/4 |
| 18 | 25 | 1-9/16 | 21 | 19-7/8 | 5-1/2 | 2-11/16 | 3-13/16 | 18.18 | 18.20 | 18.00 | 1/2 | 1-15/16 |
| 20 | 27-1/2 | 1-11/16 | 23 | 22 | 5-11/16 | 2-7/8 | 4-1/16 | 20.20 | 20.25 | 20.00 | 1/2 | 2-1/8 |
| 24 | 32 | 1-7/8 | 27-1/4 | 26-1/8 | 6 | 3-1/4 | 4-3/8 | 24.25 | 24.25 | 24.00 | 1/2 | 2-1/2 |
Weight Chart of ASTM A182 F91 Alloy Steel Flanges
| Pipe Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diam. of Hub |
Diameter of Raised Face | Length Hub.Y | Thread Length | Diam. of Bolt Circle |
Diam. of Bolt Holes |
Number of Bolts |
Diam. of Bolts (inch) |
KG | LB | |
| inch | dn | O | C | X | G | Y | T | BC | BH | BN | BD | ||
| 1/2″ | 15 | 89.00 | 11.20 | 30.20 | 35.10 | 15.70 | 15.70 | 60.50 | 15.80 | 4 | 1/2″ | 0.4 | 0.9 |
| 3/4″ | 20 | 98.50 | 12.70 | 38.10 | 42.90 | 15.70 | 15.70 | 69.90 | 15.80 | 4 | 1/2″ | 0.7 | 1.5 |
| 1″ | 25 | 108.00 | 14.20 | 49.30 | 50.80 | 17.50 | 17.50 | 79.30 | 15.80 | 4 | 1/2″ | 0.8 | 1.8 |
| 1-1/4″ | 32 | 117.50 | 15.70 | 58.70 | 63.50 | 20.60 | 20.60 | 88.90 | 15.80 | 4 | 1/2″ | 1.2 | 2.6 |
| 1-1/2″ | 40 | 127.00 | 17.50 | 65.00 | 73.20 | 22.40 | 22.40 | 98.60 | 15.80 | 4 | 1/2″ | 1.5 | 3.3 |
| 2″ | 50 | 152.50 | 19.10 | 77.70 | 91.90 | 25.40 | 25.40 | 120.70 | 19.10 | 4 | 5/8″ | 2.3 | 5.1 |
| 2-1/2″ | 65 | 178.00 | 22.40 | 90.40 | 104.60 | 28.40 | 28.40 | 139.70 | 19.10 | 4 | 5/8″ | 3.7 | 8.1 |
| 3″ | 80 | 190.50 | 23.90 | 108.00 | 127.00 | 30.20 | 30.20 | 152.40 | 19.10 | 4 | 5/8″ | 4.1 | 9 |
| 3-1/2″ | 90 | 216.00 | 23.90 | 122.20 | 139.70 | 31.80 | 31.80 | 177.80 | 19.10 | 8 | 5/8″ | 5.1 | 11.2 |
| 4″ | 100 | 228.50 | 23.90 | 134.90 | 157.20 | 33.30 | 33.30 | 190.50 | 19.10 | 8 | 5/8″ | 5.9 | 13 |
| 5″ | 125 | 254.00 | 23.90 | 163.60 | 185.70 | 36.60 | 36.60 | 215.90 | 22.40 | 8 | 3/4″ | 7 | 15.4 |
| 6″ | 150 | 279.50 | 25.40 | 192.00 | 215.90 | 39.60 | 39.60 | 241.30 | 22.40 | 8 | 3/4″ | 8.4 | 18.5 |
| 8″ | 200 | 343.00 | 28.40 | 246.10 | 269.70 | 44.50 | 44.50 | 298.50 | 22.40 | 8 | 3/4″ | 13 | 28.6 |
| 10″ | 250 | 406.50 | 30.20 | 304.80 | 323.90 | 49.30 | 49.30 | 362.00 | 25.40 | 12 | 7/8″ | 18 | 39.5 |
| 12″ | 300 | 482.50 | 31.80 | 365.30 | 381.00 | 55.60 | 55.60 | 431.80 | 25.40 | 12 | 7/8″ | 29 | 64 |
| 14″ | 350 | 533.50 | 35.10 | 400.10 | 412.80 | 57.20 | 57.20 | 476.30 | 28.50 | 12 | 1″ | 39 | 86 |
| 16″ | 400 | 597.00 | 36.60 | 457.20 | 469.90 | 63.50 | 63.50 | 539.80 | 28.50 | 16 | 1″ | 47 | 103 |
| 18″ | 450 | 635.00 | 39.60 | 505.00 | 533.40 | 68.30 | 68.30 | 577.90 | 31.80 | 16 | 1 1/8″ | 57 | 126 |
| 20″ | 500 | 698.50 | 42.90 | 558.80 | 584.20 | 73.20 | 73.20 | 635.00 | 31.80 | 20 | 1 1/8″ | 76 | 167 |
| 24″ | 600 | 813.00 | 47.80 | 663.40 | 692.20 | 82.60 | 82.60 | 749.30 | 35.10 | 20 | 1 1/4″ | 97 | 214 |
ASTM A182 F91 AS Flanges Chemical Composition
| Grade | C | Mn | P | s | Si | Ni | Cr | Mo | Cb |
| F91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 0.40 | 8.0-9.5 | 0.85-1.05 | 0.06-0.10 |
ASTM A182 Alloy Steel F91 Flanges Mechanical Properties
| Grade | Tensilee Strength (Mpa) | Yield Strength (Mpa) | Elongation % | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| F91 | 415 | 585 | 20 | – | 248 max |
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