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ASTM A694 F70 Flanges Manufacturer and Supplier in India
ASTM A694 F70 Flanges are forged steel pipe parts designed for pipeline systems with heavy pressure requirements and that require strength and reliable operation. Grade F70 steel has been standardized in ASTM A694/A694M, where the minimum yield and tensile strength of the grade are 70 ksi (485 MPa) and 82 ksi (565 MPa) respectively. These properties make Grade F70 steel very suitable for use in high-strength pipelines for oil & gas transportation and petrochemical industries. The flange sizes, facings, and pressure ratings are determined based upon relevant dimensional standards and project needs. Solitaire Overseas is an ASTM A694 F70 Flanges Manufacturer in India, supplying high quality Flanges solutions to its customers across the globe for challenging pipeline applications.
Technical Data
Specifications of ASTM A694 F70 Flanges
| Property / Parameter | Specification / Standard |
|---|---|
| Standard Specification | ASTM A694 / ASME SA694 |
| Grade Designation | Grade F70 |
| 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 48" and larger (ASME B16.47) |
| Pressure Classes | Class 150, 300, 400, 600, 900, 1500, 2500 |
| Heat Treatment Condition | Normalizing, Quenching and Tempering (tempering temp ≥ 540°C / 1000°F) |
| Flange Facings | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Temperature Range | -29°C to +427°C (-20°F to +800°F) typical |
Chemical Compositions of ASTM A694 F70 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 F70 Flanges Mechanical Properties
| Property | Minimum Requirement |
|---|---|
| Yield Strength (0.2% offset) | 485 MPa / 70 ksi |
| Tensile Strength | 565 MPa / 82 ksi |
| Elongation (in 2 inches / 50 mm) | 18% |
ASTM A694 F70 Forging Facing Flanges Thermal Properties
| Property | Value | Temperature / Condition |
|---|---|---|
| Coefficient of Thermal Expansion | 1.32×10-5 – 1.38×10-5 1/K | At 20 °C |
| Melting Point | 1480 – 1526 °C | Standard Pressure |
| Maximum Service Temperature | 500 °C | Continuous Operation |
ASTM A694 F70 Flanges Pressure Rating Chart
| Temperature (°F) | Class 150# | Class 300# | Class 400# | Class 600# | Class 900# | Class 1500# | Class 2500# |
|---|---|---|---|---|---|---|---|
| -20 to 100 | 35 | 380 | 510 | 765 | 1145 | 1910 | 3180 |
| 200 | 95 | 415 | 555 | 830 | 1245 | 2075 | 3460 |
| 300 | 20 | 310 | 410 | 615 | 925 | 1545 | 2570 |
| 400 | 65 | 395 | 530 | 790 | 1190 | 1980 | 3300 |
| 500 | 20 | 255 | 345 | 515 | 770 | 1285 | 2145 |
| 600 | 140 | 435 | 580 | 875 | 1310 | 2185 | 3640 |
| 650 | 20 | 155 | 205 | 310 | 465 | 770 | 1285 |
| 700 | 110 | 425 | 565 | 850 | 1275 | 2125 | 3540 |
| 750 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
| 800 | 20 | 115 | 150 | 225 | 340 | 565 | 945 |
| 850 | 20 | 50 | 65 | 95 | 145 | 240 | 400 |
| 900 | 20 | 60 | 80 | 125 | 185 | 310 | 515 |
| 950 | 230 | 600 | 800 | 1200 | 1800 | 3000 | 5000 |
| 1000 | 15 | 35 | 45 | 70 | 105 | 170 | 285 |
| 1050 | 190 | 495 | 660 | 995 | 1490 | 2485 | 4140 |
| 1100 | 275 | 720 | 960 | 1440 | 2160 | 3600 | 6000 |
| 1150 | 80 | 405 | 540 | 805 | 1210 | 2015 | 3360 |
| 1200 | 205 | 540 | 720 | 1080 | 1620 | 2700 | 4500 |
| 1250 | 50 | 390 | 520 | 780 | 1165 | 1945 | 3240 |
| 1300 | 170 | 465 | 620 | 930 | 1395 | 2330 | 3880 |
| 1350 | 20 | 320 | 430 | 640 | 965 | 1605 | 2675 |
| 1400 | 125 | 430 | 575 | 860 | 1290 | 2150 | 3580 |
| 1450 | 20 | 200 | 265 | 400 | 595 | 995 | 1655 |
| 1500 | 10 | 25 | 35 | 55 | 80 | 135 | 230 |
Wall Thickness Schedule for High Yield Carbon Steel F70 Flanges
| NPS | Outside Dia. | Sch 10 | STD Wall | Sch 40 | EXT Hvy | Sch 80 | Sch 160 |
|---|---|---|---|---|---|---|---|
| 1/2" | 0.840 | 0.083 | 0.109 | 0.109 | 0.147 | 0.147 | 0.188 |
| 3/4" | 1.050 | 0.083 | 0.113 | 0.113 | 0.154 | 0.154 | 0.219 |
| 1" | 1.315 | 0.109 | 0.133 | 0.133 | 0.179 | 0.179 | 0.250 |
| 1-1/4" | 1.660 | 0.109 | 0.140 | 0.140 | 0.191 | 0.191 | 0.252 |
| 1-1/2" | 1.900 | 0.109 | 0.145 | 0.145 | 0.200 | 0.200 | 0.281 |
| 2" | 2.375 | 0.109 | 0.154 | 0.154 | 0.218 | 0.218 | 0.344 |
| 2-1/2" | 2.875 | 0.120 | 0.203 | 0.203 | 0.276 | 0.276 | 0.375 |
| 3" | 3.500 | 0.120 | 0.216 | 0.216 | 0.300 | 0.300 | 0.438 |
| 4" | 4.500 | 0.120 | 0.237 | 0.237 | 0.337 | 0.337 | 0.531 |
| 5" | 5.563 | 0.134 | 0.258 | 0.258 | 0.375 | 0.375 | 0.625 |
| 6" | 6.625 | 0.134 | 0.280 | 0.280 | 0.432 | 0.432 | 0.719 |
| 8" | 8.625 | 0.148 | 0.322 | 0.322 | 0.500 | 0.500 | 0.906 |
| 10" | 10.750 | 0.165 | 0.365 | 0.365 | 0.500 | 0.594 | 1.125 |
| 12" | 12.750 | 0.180 | 0.375 | 0.406 | 0.500 | 0.688 | 1.312 |
| 14" | 14.000 | 0.250 | 0.375 | 0.438 | 0.500 | 0.750 | 1.406 |
| 16" | 16.000 | 0.250 | 0.375 | 0.500 | 0.500 | 0.844 | 1.594 |
| 18" | 18.000 | 0.250 | 0.375 | 0.562 | 0.500 | 0.938 | 1.781 |
| 20" | 20.000 | 0.250 | 0.375 | 0.594 | 0.500 | 1.031 | 1.969 |
Dimensions Table of ASTM A694 F70 Flanges
| Standard / System | Class / Rating | Flange Dia (mm) | No. of Bolts | Bolt Circle Dia (mm) | Bolt Size | Dia of Bolt Hole (mm) |
|---|---|---|---|---|---|---|
| AS 2129 | Table C | 95 | 4 | 67 | 13 | 14 |
| Table D | 95 | 4 | 67 | 13 | 14 | |
| Table E | 95 | 4 | 67 | 13 | 14 | |
| Table F | 95 | 4 | 67 | 13 | 14 | |
| Table H | 114 | 4 | 83 | 16 | 17 | |
| Table J | 114 | 4 | 83 | 16 | 17 | |
| ANSI / ASME B16.5 | Class 150 | 89 | 4 | 60 | 13 | 16 |
| Class 300 | 95 | 4 | 67 | 13 | 16 | |
| Class 600 | 95 | 4 | 67 | 13 | 16 | |
| Class 900 | 121 | 8 | 83 | 19 (3/4") | 22 | |
| Class 1500 | 121 | 4 | 83 | 19 | 22 | |
| ISO 7005 (DIN) | PN 6 | 55 | 8 | 0 | M10 | — |
| PN 10 | 95 | 4 | 65 | M12 | 14 | |
| PN 16 | 95 | 4 | 65 | M12 | 14 | |
| PN 20 | 90 | 4 | 60.5 | M14 | 16 | |
| PN 25 | 95 | 4 | 65 | M12 | 14 | |
| PN 40 | 95 | 4 | 65 | M12 | 14 | |
| AS 4087 | PN 14 | 95 | 4 | 67 | M12 | 14 |
Different Types of ASTM A694 F70 Flanges
ASTM A694 Steel Grade F70 SORF Flange
F70 Carbon Steel Forged Flanges
Carbon Steel A694 Grade F70 Reducing Flanges
ASTM A694 Grade F70 BLRF Flange
Carbon Steel F70 Square Flange
ASTM A694 F70 Spectacle Blind Flanges
High Yield CS A694 Grade F70 Orifice Flanges
ASTM A694 Grade F70 High Hub Blind Flanges
ASTM A694 Gr F70 Screwed Flanges
SA694 F70 Socket Weld Flange
A694 Carbon Steel F70 RTJ Flanges
A694 F70 SWRF Flanges
SA 694 F70 Ring Type Joint Flanges
SA694 Gr F70 WNRF Flanges
ASTM A694 F70 Threaded Flange
High Yield CS A694 Grade F70 Lapped joint Flanges
ASTM A694 Gr F70 Expander Flanges
SA 694 F70 Weld Neck Flanges Series A or B
Applications and Industrial Uses of ASTM A694 F70 Flanges
- High-Pressure Oil Transmission Pipelines
- Natural Gas Transmission Networks
- Offshore Oil and Gas Production Platforms
- Subsea Pipeline Systems
- Liquefied Natural Gas (LNG) Terminals
- Crude Oil Pumping Stations
- Petrochemical Processing Plants
- High-Pressure Gas Compressor Stations
Frequently Asked Questions
ASTM A694 F70 Flanges are high-strength forged steel flanges designed for high-pressure oil, gas, and pipeline transmission applications. Grade F70 has a minimum yield strength of 70 ksi (485 MPa).
ASTM A694 F70 has a minimum yield strength of 485 MPa (70 ksi), while F65 has a minimum yield strength of 450 MPa (65 ksi). F70 offers higher specified yield strength.
ASTM A694/A694M specifies material requirements. Flange dimensions and pressure classes generally follow ASME B16.5 for NPS 1/2 through 24 and ASME B16.47 for larger sizes.
Common types include weld neck, blind, slip-on, socket weld, threaded, and lap joint flanges, subject to applicable design and manufacturing requirements.
Typical tests include chemical analysis, tensile testing, hardness testing, dimensional inspection, and specified nondestructive examinations.
Yes, ASTM A694 F70 Flanges can be used in offshore and subsea pipelines when their design, material properties, corrosion protection, and project requirements are satisfied.