ASTM A182 F304 stainless steel flanges are the most commonly used flanges among all other austenitic Stainless Steel grades. 304L stainless steel flanges have a chromium content of 15% to 20%, while the alloy used to manufacture these flanges contains 2% to 10.5% nickel.
ASTM A182 F304 is a specification developed by ASTM International that covers forged or rolled alloy and stainless steel pipe flanges,Alloy Steel Pipe forged fittings, and valves and parts intended for high-temperature service. Specifically, ASTM A182 F304 focuses on austenitic stainless steel material grade 304, which is commonly used in various industrial applications due to its excellent corrosion resistance and versatility.
ASTM A182 F304 Flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.
ASTM A182 F304 Flange Grade is the standard "18/8" stainless; it is the most versatile and most widely used Stainless Steel Flange, available in a wider range of products, forms and finishes than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-ware and saucepans. For these applications it is common to use special "304DDQ" (Deep Drawing Quality) variants.
ASTM A182 F304 flanges are made from alloy 304 Stainless Steel, which consists of chromium, nickel, and other elements. The most common composition is 18% chromium and 8% nickel.
Grade 304 stainless steel is known for its outstanding corrosion resistance, making it suitable for use in various corrosive environments, including chemical, petrochemical, and food processing industries.
These flanges and SS Flanges are typically manufactured using a forging or rolling process to ensure the desired mechanical properties and structural integrity. The forging process enhances the strength and durability of the flanges.
ASTM A182 F304 covers a wide range of flange types, including weld Neck Flange, slip-on, threaded, socket weld, lap joint, and blind flanges. Each type is designed for specific applications and joining methods.
The ASTM A182 F304 specification provides guidelines for the pressure-temperature ratings of the flanges, indicating the maximum allowable pressure at a given temperature. This information is crucial for ensuring the safe and reliable performance of the flanges in various operating conditions.
ASTM A182 F304 flanges find applications in industries such as oil and gas, chemical processing, pharmaceuticals, food and beverage, and many others where corrosion resistance and durability are essential requirements.
Manufacturers producing ASTM A182 F304 flanges must adhere to the specified requirements outlined in the ASTM A182 standard to ensure product consistency and quality. Compliance with additional industry standards and regulations may also be necessary depending on the intended application.
Flanges manufactured in accordance with ASTM A182 F304 are typically marked with relevant information such as material grade, size, pressure class, and manufacturer's identification. This helps users verify that the product meets the specified requirements.
ASTM A182 F304 flanges offer a reliable and corrosion-resistant solution for various industrial applications, meeting stringent standards to ensure their performance and safety in challenging environments.
ASTM A182 F304 Flange Specification | ASTM A182 / ASME SA182 |
ASTM A182 F304 Flange Manufacturing Process | Hot Forging / Rolling / Machining |
ASTM A182 F304 Flange Other Grades | 202 / 304 / 304L / 304H / 309S / 310S / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. UNS No. - UNS S30400, UNS S30403, UNS S31008, UNS S31620, UNS S31603, UNS S31603, UNS S31635, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904 EN No. - 1.4301, 1.4307, 1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539 |
ASTM A182 F304 Flange Outer Diameter | 1/2" NB TO 64" NB |
ASTM A182 F304 Flange Pressure Class | Class 150#, Class 300#, Class 400#, Class 600#, Class 900#, Class 1500#, Class 2500# or As Per Custom Requirement PN 6, PN 10, PN 16, PN 25 and PN 40 etc |
ASTM A182 F304 Flange Schedule | Sch 10s TO Sch XXS or As Per Custom Requirement |
ASTM A182 F304 Flange Facing | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
ASTM A182 F304 Flange Dimension | ASME B16.5, ASME B16.47 SERIES A, ASME B16.47 SERIES B, ASME B16.36, BS10, EN1092-1:2013, MSS SP44, ASA, API-605, ISO 7005, ISO 15590-3, DIN 2631--2638, DIN 2573-2576, DIN 2527, DIn 2641-2642, DIN 2565-2566, DIN2502, AWWA, AS2129 TABLE C, D, E, F, J etc.. |
ASTM A182 F304 Flange Types | Welding Neck Flange, Slip On Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Blind Flange, Orifice Flanges, Plate Flange, Long Welding Neck Flanges, Weldoflange, Nipoflange, Expander Flange, Reducing Flange, WNRF Flange, SORF Flange, SWRF Flange, Custom Flange as per Drawing etc. |
ASTM A182 F304 Flange Other Testing | NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, HIC, SSC, Sour Service etc. |
ASTM A182 F304 Flange Value Added Services | Rolling, Drill, Punch, CNC Machining, Sand Blasting, Shot Blasting, Heat Treatment, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
ASTM A182 F304 Flange Packaging | Loose / Carrate / Wooden Pallet / Wooden Box / Plastic Cloth Wraps |
ASTM A182 F304 Flange Shipment & Transportation | By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel /Pressure Vessel /FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
ASTM A182 F304 Flange Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC |
The chemical composition of grade ASTM A182 F304 Flange is outlined in the following table
C | Mn | Si | P | S | Cr | Ni | N | |
---|---|---|---|---|---|---|---|---|
304 | 0.07max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 10.5 | — |
304L | 0.03max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 12.0 | 0.10 max |
304H | min: 18.0 max:20.0 | min: 8.0 max: 10.5 | min: 0.04 max:0.10 | 0.75 max | 2.0 max | 0.045 max | 0.03 max | 0.10 max |
The mechanical properties and Components of grade ASTM A182 F304 Flange are displayed in the following table.
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
304 | 515 | 205 | 40 | 92 | 201 |
304L | 485 | 170 | 40 | 92 | 201 |
304H | 515 | 205 | 40 | 92 | 201 |
304H also has a requirement for a grain size of ASTM No 7 or coarser. |
Physical properties of ASTM A182 F304 grade Stainless Steel and Carbon Steelin the annealed condition
Grade | Density(kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
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