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ASTM A694 F56 Flanges Manufacturer and Supplier in India
ASTM A694 F56 Forged Steel Flanges are high strength forged steel piping parts used for high pressure transmission service for oil, gas, petrochemical and pipeline applications. These flanges conform to ASTM A694/A694M, having a minimum yield strength of 56ksi (385MPa) and a minimum tensile strength of 68ksi (470MPa). This makes sure that these flanges conform to the stringent specifications needed for these pipeline services. The flanges are available in different pressure classes, types, sizes, and dimensions. Materials testing and dimensional control can be used to guarantee expected performance under given operating conditions. Solitaire Overseas is a reputed manufacturer and supplier of ASTM A694 F56 Flanges in India, which supplies excellent quality Flanges globally for the industrial requirements.
Technical Data
Specifications of ASTM A694 F56 Flanges
| Property / Parameter | Specification / Standard |
|---|---|
| Standard Specification | ASTM A694 / ASME SA694 |
| Grade Designation | Grade F56 |
| Dimensional Standards | ASME B16.5, ASME B16.47 Series A & B, MSS SP-44 |
| Size Range | 1/2" to 24" (ASME B16.5), 26" to 60" (ASME B16.47) |
| Pressure Classes | Class 150, 300, 400, 600, 900, 1500, 2500 |
| Flange Facings | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Heat Treatment | Normalizing, Quenching and Tempering |
| Temperature Rating | -29°C to +427°C (-20°F to +800°F) typical |
Chemical Compositions of ASTM A694 F56 Flanges
| Element | Composition Limit (%) |
|---|---|
| Carbon (C) | ≤ 0.30 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | 0.15 – 0.35 |
ASTM A694 F56 Flanges Mechanical Properties
| Property | Minimum Requirement |
|---|---|
| Yield Strength (0.2% offset) | 385 MPa / 56 ksi |
| Tensile Strength | 470 MPa / 68 ksi |
| Elongation (in 2 inches / 50 mm) | 20% |
Dimensions of ASTM A694 F56 Flanges
| Nom. Pipe Size | Flange Outside Dia. (O) | Flange Thickness (T) | Raised Face Dia. (R) | Hub Dia. at Base (X) | Bolt Holes (No. - Dia.) | Bolt Circle Dia. (PCD) | Length Through Hub - Weld Neck (L2) | Bore Dia. - Weld Neck (H) | Slip-On Bore Dia. (B2) | Length Through Hub - Slip-On/Thrd (L) | Threaded / Socket Bore (Br) | Length Through Hub - Socket Weld (L3) | Socket Bore Dia. (B3) | Counterbore Dia. (D) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | 3.50 | 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 | 0.90 |
| 3/4" | 3.88 | 0.50 | 1.69 | 1.54 | 4 - 0.62 | 2.75 | 2.06 | 1.05 | 0.82 | 0.62 | 1.09 | 0.12 | 0.62 | 1.11 |
| 1" | 4.25 | 0.56 | 2.00 | 1.94 | 4 - 0.62 | 3.12 | 2.19 | 1.32 | 1.05 | 0.69 | 1.36 | 0.12 | 0.69 | 1.38 |
| 1-1/4" | 4.62 | 0.62 | 2.50 | 2.31 | 4 - 0.62 | 3.50 | 2.25 | 1.66 | 1.38 | 0.81 | 1.70 | 0.19 | 0.81 | 1.72 |
| 1-1/2" | 5.00 | 0.68 | 2.88 | 2.56 | 4 - 0.62 | 3.88 | 2.44 | 1.90 | 1.61 | 0.88 | 1.95 | 0.25 | 0.88 | 1.97 |
| 2" | 6.00 | 0.75 | 3.62 | 3.06 | 4 - 0.75 | 4.75 | 2.50 | 2.38 | 2.07 | 1.00 | 2.44 | 0.31 | 1.00 | 2.46 |
| 2-1/2" | 7.00 | 0.88 | 4.12 | 3.56 | 4 - 0.75 | 5.50 | 2.75 | 2.88 | 2.47 | 1.12 | 2.94 | 0.31 | 1.12 | 2.97 |
| 3" | 7.50 | 0.94 | 5.00 | 4.25 | 4 - 0.75 | 6.00 | 2.75 | 3.50 | 3.07 | 1.19 | 3.57 | 0.38 | 1.19 | 3.60 |
| 3-1/2" | 8.50 | 0.94 | 5.50 | 4.81 | 8 - 0.75 | 7.00 | 2.81 | 4.00 | 3.55 | 1.25 | 4.07 | 0.38 | 1.25 | 4.10 |
| 4" | 9.00 | 0.94 | 6.19 | 5.31 | 8 - 0.75 | 7.50 | 3.00 | 4.50 | 4.03 | 1.31 | 4.57 | 0.44 | 1.31 | 4.60 |
| 5" | 10.00 | 0.94 | 7.31 | 6.44 | 8 - 0.88 | 8.50 | 3.50 | 5.56 | 5.05 | 1.44 | 5.66 | 0.44 | 1.44 | 5.69 |
| 6" | 11.00 | 1.00 | 8.50 | 7.56 | 8 - 0.88 | 9.50 | 3.50 | 6.63 | 6.07 | 1.56 | 6.72 | 0.50 | 1.56 | 6.75 |
| 8" | 13.50 | 1.12 | 10.62 | 9.69 | 8 - 0.88 | 11.75 | 4.00 | 8.63 | 7.98 | 1.75 | 8.72 | 0.50 | 1.75 | 8.75 |
| 10" | 16.00 | 1.19 | 12.75 | 12.00 | 12 - 1.00 | 14.25 | 4.00 | 10.75 | 10.02 | 1.94 | 10.88 | 0.50 | 1.94 | 10.92 |
| 12" | 19.00 | 1.25 | 15.00 | 14.38 | 12 - 1.00 | 17.00 | 4.50 | 12.75 | 12.00 | 2.19 | 12.88 | 0.50 | 2.19 | 12.92 |
| 14" | 21.00 | 1.38 | 16.25 | 15.75 | 12 - 1.12 | 18.75 | 5.00 | 14.00 | 13.25 | 2.25 | 14.14 | 0.50 | 3.12 | 14.18 |
| 16" | 23.50 | 1.44 | 18.50 | 18.00 | 16 - 1.12 | 21.25 | 5.00 | 16.00 | 15.25 | 2.50 | 16.16 | 0.50 | 3.44 | 16.19 |
| 18" | 25.00 | 1.56 | 21.00 | 19.88 | 16 - 1.25 | 22.75 | 5.50 | 18.00 | 17.25 | 2.69 | 18.18 | 0.50 | 3.81 | 18.20 |
| 20" | 27.50 | 1.69 | 23.00 | 22.00 | 20 - 1.25 | 25.00 | 5.69 | 20.00 | 19.25 | 2.88 | 20.20 | 0.50 | 4.06 | 20.25 |
| 22" | 29.50 | 1.81 | 25.25 | 24.25 | 20 - 1.38 | 27.25 | 5.88 | 22.00 | 21.25 | 3.13 | 22.22 | 0.50 | 4.25 | 22.25 |
| 24" | 32.00 | 1.88 | 27.25 | 26.12 | 20 - 1.38 | 29.56 | 6.00 | 24.00 | 23.25 | 3.25 | 24.25 | 0.50 | 4.38 | 24.25 |
Weight Chart of ASTM A694 F56 Flanges
| Nominal Pipe Size | Dim. Code | Class 125 / 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
|---|---|---|---|---|---|---|---|---|
| 1/2" | A (OD) | 3-1/2" (88.9 mm) | 3-3/4" (95.2 mm) | 3-3/4" (95.2 mm) | 3-3/4" (95.2 mm) | — | 4-3/4" (121 mm) | 5-1/4" (133.4 mm) |
| b (Thickness) | 7/16" (11.1 mm) | 9/16" (14.3 mm) | 9/16" (14.3 mm) | 9/16" (14.3 mm) | — | 7/8" (22.2 mm) | 1-3/16" (30.2 mm) | |
| D2 (Hub Base) | 1-3/8" (34.9 mm) | 1-3/8" (34.9 mm) | 1-3/8" (34.9 mm) | 1-3/8" (34.9 mm) | — | 1-3/8" (34.9 mm) | 1-3/8" (34.9 mm) | |
| D1 (Bolt Circle) | 2-3/8" (60.3 mm) | 2-5/8" (66.7 mm) | 2-5/8" (66.7 mm) | 2-5/8" (66.7 mm) | — | 3-1/4" (82.6 mm) | 3-1/2" (88.9 mm) | |
| n (No. Holes) | 4 | 4 | 4 | 4 | — | 4 | 4 | |
| d (Hole Dia.) | 5/8" (15.9 mm) | 5/8" (15.9 mm) | 5/8" (15.9 mm) | 5/8" (15.9 mm) | — | 7/8" (22.2 mm) | 7/8" (22.2 mm) | |
| 3/4" | A (OD) | 3-7/8" (98.4 mm) | 4-5/8" (117.5 mm) | 4-5/8" (117.5 mm) | 4-5/8" (117.5 mm) | — | 5-1/8" (130 mm) | 5-1/2" (139.7 mm) |
| b (Thickness) | 1/2" (12.7 mm) | 5/8" (15.9 mm) | 5/8" (15.9 mm) | 5/8" (15.9 mm) | — | 1" (25.4 mm) | 1-1/4" (31.8 mm) | |
| D2 (Hub Base) | 1-11/16" (42.9 mm) | 1-11/16" (42.9 mm) | 1-11/16" (42.9 mm) | 1-11/16" (42.9 mm) | — | 1-11/16" (42.9 mm) | 1-11/16" (42.9 mm) | |
| D1 (Bolt Circle) | 2-3/4" (69.8 mm) | 3-1/4" (82.5 mm) | 3-1/4" (82.5 mm) | 3-1/4" (82.5 mm) | — | 3-1/2" (88.9 mm) | 3-3/4" (95.2 mm) | |
| n (No. Holes) | 4 | 4 | 4 | 4 | — | 4 | 4 | |
| d (Hole Dia.) | 5/8" (15.9 mm) | 3/4" (19 mm) | 3/4" (19 mm) | 3/4" (19 mm) | — | 7/8" (22.2 mm) | 7/8" (22.2 mm) | |
| 1" | A (OD) | 4-1/4" (108 mm) | 4-7/8" (123.8 mm) | 4-7/8" (123.8 mm) | 4-7/8" (123.8 mm) | — | 5-7/8" (149.2 mm) | 6-1/4" (159 mm) |
| b (Thickness) | 9/16" (14.3 mm) | 11/16" (17.5 mm) | 11/16" (17.5 mm) | 11/16" (17.5 mm) | — | 1-1/8" (28.6 mm) | 1-3/8" (34.9 mm) | |
| D2 (Hub Base) | 2" (50.8 mm) | 2" (50.8 mm) | 2" (50.8 mm) | 2" (50.8 mm) | — | 2" (50.8 mm) | 2" (50.8 mm) | |
| D1 (Bolt Circle) | 3-1/8" (79.4 mm) | 3-1/2" (88.9 mm) | 3-1/2" (88.9 mm) | 3-1/2" (88.9 mm) | — | 4" (102 mm) | 4-1/4" (108 mm) | |
| n (No. Holes) | 4 | 4 | 4 | 4 | — | 4 | 4 | |
| d (Hole Dia.) | 5/8" (15.9 mm) | 3/4" (19 mm) | 3/4" (19 mm) | 3/4" (19 mm) | — | 1" (25.4 mm) | 1-1/4" (31.8 mm) | |
| 1-1/4" | A (OD) | 4-5/8" (117.5 mm) | 5-1/4" (133.4 mm) | 5-1/4" (133.4 mm) | 5-1/4" (133.4 mm) | — | 6-1/4" (159 mm) | 7-1/4" (184.2 mm) |
| b (Thickness) | 5/8" (15.9 mm) | 3/4" (19 mm) | 13/16" (20.6 mm) | 13/16" (20.6 mm) | — | 1-1/8" (28.6 mm) | 1-1/2" (38.1 mm) | |
| D2 (Hub Base) | 2-1/2" (63.5 mm) | 2-1/2" (63.5 mm) | 2-1/2" (63.5 mm) | 2-1/2" (63.5 mm) | — | 2-1/2" (63.5 mm) | 2-1/2" (63.5 mm) | |
| D1 (Bolt Circle) | 3-1/2" (88.9 mm) | 3-7/8" (98.4 mm) | 3-7/8" (98.4 mm) | 3-7/8" (98.4 mm) | — | 4-3/8" (111 mm) | 5-1/8" (130 mm) | |
| n (No. Holes) | 4 | 4 | 4 | 4 | — | 4 | 4 | |
| d (Hole Dia.) | 5/8" (15.9 mm) | 3/4" (19 mm) | 3/4" (19 mm) | 3/4" (19 mm) | — | 1" (25.4 mm) | 1-1/8" (28.6 mm) | |
| 1-1/2" | A (OD) | 5" (127 mm) | 6-1/8" (155.6 mm) | 6-1/8" (155.6 mm) | 6-1/8" (155.6 mm) | — | 7" (177.8 mm) | 8" (203 mm) |
| b (Thickness) | 11/16" (17.5 mm) | 13/16" (20.6 mm) | 7/8" (22.2 mm) | 7/8" (22.2 mm) | — | 1-1/4" (31.8 mm) | 1-3/4" (44.5 mm) | |
| D2 (Hub Base) | 2-7/8" (73 mm) | 2-7/8" (73 mm) | 2-7/8" (73 mm) | 2-7/8" (73 mm) | — | 2-7/8" (73 mm) | 2-7/8" (73 mm) | |
| D1 (Bolt Circle) | 3-7/8" (98.4 mm) | 4-1/2" (114 mm) | 4-1/2" (114 mm) | 4-1/2" (114 mm) | — | 4-7/8" (124 mm) | 5-3/4" (146 mm) | |
| n (No. Holes) | 4 | 4 | 4 | 4 | — | 4 | 4 | |
| d (Hole Dia.) | 5/8" (15.9 mm) | 7/8" (22.2 mm) | 7/8" (22.2 mm) | 7/8" (22.2 mm) | — | 1-1/8" (28.6 mm) | 1-1/4" (31.8 mm) | |
| 2" | A (OD) | 6" (152.4 mm) | 6-1/2" (165.1 mm) | 6-1/2" (165.1 mm) | 6-1/2" (165.1 mm) | — | 8-1/2" (215.9 mm) | 9-1/4" (234.9 mm) |
| b (Thickness) | 3/4" (19 mm) | 7/8" (22.2 mm) | 1" (25.4 mm) | 1" (25.4 mm) | — | 1-1/2" (38.1 mm) | 2" (50.8 mm) | |
| D2 (Hub Base) | 3-5/8" (92.1 mm) | 3-5/8" (92.1 mm) | 3-5/8" (92.1 mm) | 3-5/8" (92.1 mm) | — | 3-5/8" (92.1 mm) | 3-5/8" (92.1 mm) | |
| D1 (Bolt Circle) | 4-3/4" (121 mm) | 5" (127 mm) | 5" (127 mm) | 5" (127 mm) | — | 6-1/2" (165.1 mm) | 6-3/4" (171 mm) | |
| n (No. Holes) | 4 | 8 | 8 | 8 | — | 8 | 8 | |
| d (Hole Dia.) | 3/4" (19 mm) | 3/4" (19 mm) | 3/4" (19 mm) | 3/4" (19 mm) | — | 1" (25.4 mm) | 1-1/8" (28.6 mm) |
Types of ASTM A694 F56 Flanges
A694 F56 Carbon Steel Slip On Flanges
A694 F56 Weld Neck Flanges
ASTM A694 F56 Lap Joint Flanges
Carbon Steel F56 Threaded Flanges
CS F56 Socket Weld Flanges
F56 Carbon Long Weld Neck Flanges
CS F56 Pipe Weldo / Nipo Flanges
Carbon Steel A694 F56 Orifice Flanges
A694 F56 Carbon Steel Plate Flange
A694 F56 Forged Flanges
ASTM A694 F56 Blind Flanges
Carbon Steel F56 Reducing Flanges
Carbon Steel F56 Flat Flanges
A694 F56 Insert Flanges
CS F56 Jacket Insert Flanges
Carbon Steel F56 Standard Insert Flanges
A694 F56 Carbon Steel Loose Flanges
A694 F56 RTJ Flanges
ASTM A694 F56 SORF Flanges
Carbon Steel F56 Square Flanges
A694 F56 Carbon Steel SWRF Flanges
Carbon Steel A694 F56 Expander Flanges
ASTM A694 F56 WNRF Flanges
F56 Carbon Tongue & Groove Flanges
Applications and Industrial Uses of ASTM A694 F56 Flanges
- Oil and Gas Transmission Pipelines
- High-Pressure Natural Gas Pipelines
- Crude Oil Transportation Systems
- Petrochemical Processing Plants
- Offshore Oil and Gas Platforms
- Gas Gathering and Distribution Systems
- Pipeline Pumping Stations
Frequently Asked Questions
ASTM A694 F56 Flanges are high-strength forged steel flanges designed for high-pressure oil, gas, and pipeline transmission systems.
Select flanges based on operating pressure, temperature, flange size, pressure class, material compatibility, and applicable piping standards.
Heat treatment depends on the applicable ASTM A694/A694M requirements and manufacturing conditions. Normalizing, quenching, and tempering may be specified where applicable.
Common tests include tensile testing, chemical analysis, hardness testing, dimensional inspection, and nondestructive examination when specified by the purchase order.
Yes, ASTM A694 F56 Flanges can be used in offshore pipeline projects when their material properties, pressure rating, corrosion protection, and project requirements are suitable.