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Alloy Steel A182 F9 Flanges are high-performance forged fittings designed for use in high-temperature and high-pressure applications. Manufactured from ASTM A182 F9 alloy steel, these flanges provide excellent resistance to corrosion, heat, and mechanical stress, making them ideal for industrial piping systems.
The A182 F9 material is a chromium-molybdenum alloy steel, offering superior strength and durability compared to carbon steel. The alloy typically contains chromium (0.5-1.25%), molybdenum (0.44-0.65%), carbon (0.05-0.15%), and other trace elements to enhance hardness and toughness.
Alloy Steel A182 F9 Flanges are available in various types, including weld neck flanges, slip-on flanges, socket weld flanges, blind flanges, threaded flanges, and lap joint flanges. Each type serves specific purposes in industrial piping, from easy assembly to pressure-tight connections.
These flanges are manufactured according to ASTM A182, ASME B16.5, and ANSI standards. They come in different pressure ratings (150, 300, 600, 900, 1500, and 2500 lbs) and sizes ranging from 1/2 inch to 48 inches, providing versatility for different piping systems.
Alloy Steel A182 F9 Flanges exhibit excellent mechanical properties, including high tensile strength, yield strength, and impact resistance. Typical tensile strength ranges from 550–750 MPa, while yield strength is approximately 250–450 MPa, ensuring reliable performance under heavy loads.
The chromium and molybdenum content provides outstanding resistance to oxidation and corrosion in high-temperature environments. This makes A182 F9 flanges suitable for applications in power plants, petrochemical industries, and refineries where high temperatures and pressures are common.
These flanges are widely used in the oil and gas sector, chemical plants, steam power plants, and industrial piping systems. They are ideal for handling high-pressure steam, water, oil, and other industrial fluids, ensuring safety and longevity in critical operations.
Alloy Steel A182 F9 Flanges are produced through advanced forging techniques followed by heat treatment. This process improves the microstructure, toughness, and dimensional accuracy of the flanges. Surface finishing and precision machining ensure proper fit and leak-proof connections.
Key advantages include high strength, durability, excellent heat and corrosion resistance, and compatibility with high-pressure systems. Their robust design reduces maintenance costs and enhances the safety of piping systems in industrial setups.
Specification Table
| Property | Specification | Unit |
|---|---|---|
| Standard | ASTM A182 | - |
| Material Grade | F9 | - |
| Type | Weld Neck, Slip-On, Blind, Socket Weld, Threaded | - |
| Size Range | 1/2" to 72" | inch |
| Pressure Rating | Class 150, 300, 400, 600, 900, 1500, 2500 | lbs |
| Surface Finish | RF / RTJ / Machined | - |
| Application | High Temperature, High Pressure Piping, Petrochemical, Power Plants | - |
| Material Certification | EN 10204 / 3.1 / 3.2 | - |
| Heat Treatment | Quenched & Tempered | - |
| Delivery Condition | Hot Finished / Machined | - |
Mechanical Properties (Typical)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength (UTS) | 585 - 740 | MPa |
| Yield Strength (YS) | 415 | MPa |
| Elongation (in 50mm) | 20 | % |
| Hardness | 217 - 302 | HB |
| Impact Toughness (Charpy V-notch) | 27 | J @ -29°C |
| Temperature Range | -29 to 593 | °C |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM A182 | F9 |
| EN | 1.25Cr-0.5Mo |
| DIN | 13CrMo4-5 |
| JIS | SCr12Mo1V |
| BS | 080M40 |
| API | 5CT F9 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Size (inch) | Outside Diameter (OD) mm | Thickness (mm) | Bolt Circle Diameter (BCD) mm | No. of Bolts | Bolt Size | Weight (kg) |
|---|---|---|---|---|---|---|
| 1/2" | 95 | 16 | 70 | 4 | M16 | 2.1 |
| 1" | 120 | 18 | 85 | 4 | M16 | 3.5 |
| 2" | 150 | 19 | 105 | 4 | M16 | 6.8 |
| 4" | 230 | 22 | 180 | 8 | M20 | 16 |
| 6" | 300 | 24 | 220 | 8 | M20 | 28 |
| 8" | 375 | 26 | 285 | 8 | M22 | 45 |
| 10" | 445 | 28 | 350 | 12 | M22 | 70 |
| 12" | 520 | 30 | 405 | 12 | M24 | 105 |
| 16" | 635 | 34 | 505 | 16 | M24 | 180 |
| 24" | 780 | 38 | 640 | 20 | M27 | 320 |
Common Types Of Flangess
Ring Flanges
Type of Flanges
General Flanges
Stainless Steel Pipe Flanges
ASME B16.5 Flanges
Stainless Steel Flanges
Frequently Asked Questions (FAQ)
What is Alloy Steel A182 F9 Flange?
Alloy Steel A182 F9 Flange is a high-strength flange made from ASTM A182 Grade F9 material. It is designed for high-temperature and high-pressure applications in industries like power plants, petrochemicals, and oil & gas.
What are the types of A182 F9 Flanges available?
Common types include Weld Neck, Slip-On, Blind, Socket Weld, and Threaded Flanges. Each type is selected based on application requirements and piping design.
What are the pressure ratings of Alloy Steel F9 Flanges?
They are available in Class 150, 300, 400, 600, 900, 1500, and 2500, suitable for various high-pressure systems.
What is the operating temperature range of A182 F9 Flanges?
They are typically suitable for temperatures ranging from -29°C to 593°C, making them ideal for high-temperature applications.
Which standards do Alloy Steel A182 F9 Flanges comply with?
They comply with ASTM A182 standards and are often manufactured according to ASME B16.5 dimensions.
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