ASTM A182 Forged Fittings are pipe fittings forged from alloy, stainless steel, or duplex materials.ASTM A182 Forged Pipe Fittings are critical components of industrial piping systems used for making connections and redirecting flow, especially for high temperature service environments. Manufactured by the forging or rolling process, these fittings’ superior mechanical properties and corrosion resistance make them the preferred choice for a variety of high-pressure, high-temperature applications.
During the manufacturing process, ASTM A182 forged fittings are subjected to multiple steps, including material selection, forging, heat treatment, machining and inspection. Forged fittings typically have high dimensional accuracy and surface quality to meet stringent engineering requirements and service environments. Overall, ASTM A182 Forged Fittings is a high quality, high performance piping connectors, widely used in oil, gas, chemical and electric power industries in the piping system that need to withstand high temperature and high pressure.
What are forged fittings?
Forged fittings are the fittings made by forged steel. The process of manufacturing forged steel fittings include: cutting and heating billets, put pressure on heated billets under dies into desired shape, trimming and shot blasting. Then machine forged blank fittings for net shape and dimensions.
According to the applications of forged steel fittings, they are available in threaded and socket weld end connections. The dimensions for socket weld forged steel fitting conform to ASME B16.11 and threaded forged steel fittings conform to ASME (American Society of Mechanical Engineers) B1.20.1.
Types of products covered by ASTM A182
1. Flanges – used to connect pipes, valves, pumps and other equipment in piping systems.
2. Forged fittings – including elbows, tees, reducers, caps and unions used in high-pressure systems.
3. Valves – used to control the flow of fluids in high-temperature environments.
4. Other forged or rolled products – including valves and fittings used in steam, gas and other high-pressure systems.
ZIZI manufactures these products in a variety of sizes, materials and configurations to ensure they meet your specific application needs.
Manufacturing process
Material Selection: According to the required chemical composition and mechanical properties, select the appropriate alloy steel or stainless steel raw materials.
Forging: The steel is heated above the recrystallization temperature and then forged into the desired shape by hammering or pressing. The forging process refines the grain structure and improves the strength and toughness of the material, enabling it to withstand higher pressures and stresses.
Heat Treatment: After forging, fittings require appropriate heat treatment to eliminate internal stresses, optimize grain structure and achieve desired mechanical properties. Types of heat treatment include normalizing, quenching, tempering, solution treatment, etc., depending on the grade of steel.
Machining: Machining of forgings to achieve the final size, shape and connection.
Inspection: Strict quality control and inspection are essential, including visual inspection, dimensional inspection, non-destructive testing and mechanical property testing to ensure that the products meet the standard requirements.
Specifications of ASTM A182 Forged Fittings:
| Size | 1/2″NB TO 4″NB IN |
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.11 & BS3799, etc. |
| Class | 2000LBS, 3000LBS, 6000LBS, 9000LBS, etc. |
| Type | Socketweld Fittings, Threaded Fittings |
Forged Fittings Manufacturing Standards :
ASTM A182 – ASME SA182 Standard: Specification for Wrought Austenitic Duplex Steel Piping Fittings
ASME B16.11: Socket Welding and Threaded Forged Fittings
MSS SP-43: Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
MSS SP-95: Swage(d) Nipples and Bull Plugs
BS3799: Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry
ASTM A182 Types of Forged Fittings
Socket Weld Fittings (SW):
Used for small-bore, high-pressure pipelines. Provide high leak-proof integrity.
Socket Weld Cap
Socket Weld Elbow
Socket Weld Tee
Socket Weld Cross
Socket Weld Coupling
Socket Weld Union
Threaded Fittings (NPT/BSP):
Used in low to moderate pressure systems. Easy to assemble without welding.
Threaded Elbow
Threaded Tee
Threaded Cross
Threaded Coupling
Threaded Cap
Threaded Union
Threaded Nipple
Threaded Hex Nipple
Threaded Swage Nipple
Threaded Plug
Threaded Bushing
ASTM A182 Forged Fittings Material Grades
ASTM A182 Alloy Steel
The alloy steel grades in the ASTM A182 standard are typically chromium-molybdenum steels (Cr-Mo steels), which have chromium (Cr) and molybdenum (Mo) added to improve high-temperature strength, creep resistance, and corrosion resistance. These steels usually require heat treatment to achieve the desired mechanical properties.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | Cb |
| ASTM A182 F11 CL1 | MIN | 0.05 | 0.30 | 0.50 | 1.00 | 0.44 | ||||
| MAX | 0.15 | 0.60 | 0.03 | 0.03 | 1.00 | 1.50 | 0.65 | |||
| ASTM A182 F11 CL2 | MIN | 0.10 | 0.30 | 0.50 | 1.00 | 0.44 | ||||
| MAX | 0.20 | 0.80 | 0.04 | 0.04 | 1.00 | 1.50 | 0.65 | |||
| ASTM A182 F11 CL3 | MIN | 0.05 | 0.30 | 0.50 | 1.00 | 0.44 | ||||
| MAX | 0.15 | 0.60 | 0.03 | 0.03 | 1.00 | 1.50 | 0.65 | |||
| ASTM A182 F12 CL1 | MIN | 0.05 | 0.30 | 0.80 | 0.44 | |||||
| MAX | 0.15 | 0.60 | 0.45 | 0.45 | 0.50 | 1.25 | 0.65 | |||
| ASTM A182 F12 CL2 | MIN | 0.10 | 0.30 | 0.10 | 0.80 | 0.44 | ||||
| MAX | 0.20 | 0.80 | 0.40 | 0.40 | 0.60 | 1.25 | 0.65 | |||
| ASTM A182 F22 CL1，CL3 | MIN | 0.05 | 0.30 | 2.00 | 0.87 | |||||
| MAX | 0.15 | 0.60 | 0.04 | 0.04 | 0.50 | 2.50 | 1.13 | |||
| ASTM A182 F91 | MIN | 0.08 | 0.30 | 0.02 | 8.00 | 0.85 | 0.06 | |||
| MAX | 0.12 | 0.60 | 0.02 | 0.01 | 0.50 | 0.40 | 9.50 | 1.05 | 0.10 |
Mechanical Property
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % | HARDNESS |
| ASTM A182 F11 CL1 | 415 min | 205 min | 20 min | 45 min | 121-174 |
| ASTM A182 F11 CL2 | 485 min | 275 min | 20 min | 30 min | 143-207 |
| ASTM A182 F11 CL3 | 515 min | 310 min | 20 min | 30 min | 150-207 |
| ASTM A182 F12 CL1 | 415min | 220min | 20min | 45min | 121-174 |
| ASTM A182 F12 CL2 | 485min | 275min | 20min | 30min | 143-207 |
| ASTM A182 F22 CL1 | 415min | 205min | 20min | 35min | 170 |
| ASTM A182 F22 CL3 | 515min | 310min | 20min | 30min | 156-207 |
| ASTM A182 F91 | 620min | 415min | 20min | 40min | 190-248 |
Characteristics: Containing alloying elements such as chromium and molybdenum to improve high temperature strength and creep resistance, F91 and F92 are “9Cr-1Mo-V” steels with excellent high temperature creep strength.
Applications: Mainly used in high temperature and high pressure services, such as electric power plants, oil and gas refineries, petrochemical industry in the boiler, piping, heat exchangers, pressure vessels, etc., where there are strict requirements on the creep resistance and oxidation resistance of the material.
ASTM A182 Stainless Steel
ASTM A182 covers a wide range of stainless steel types including austenitic, ferritic and martensitic stainless steels, which provide excellent corrosion resistance by the addition of large amounts of chromium (at least 10.5%) to form a passivation film.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N |
| ASTM A182 F304 | MIN | 8.0 | 18.0 | |||||||
| MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 11.0 | 20.0 | 0.10 | ||
| ASTM A182 F304L | MIN | 8.00 | 18.00 | |||||||
| MAX | 0.03 | 2.00 | 0.045 | 0.030 | 1.00 | 13.00 | 20.00 | 0.10 | ||
| ASTM A182 F316 | MIN | 10.0 | 16.0 | 2.00 | ||||||
| MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 14.0 | 18.0 | 3.00 | 0.10 | |
| ASTM A182 F316L | MIN | 10.00 | 16.0 | 2.00 | ||||||
| MAX | 0.03 | 2.00 | 0.045 | 0.030 | 1.00 | 15.00 | 18.0 | 3.00 | 0.10 |
Mechanical Property
| MATERIAL | ASTM A182 F304 | ASTM A182 F304L | ASTM A182 F316 | ASTM A182 F316L |
| T.S (MPA) | 515 min | 485 min | 515 min | 485 min |
| Y.S (MPA) | 205 min | 170 min | 205 min | 170 min |
| EL % | 30 min | 30 min | 30 min | 30 min |
| R/A % | 50 min | 50 min | 50 min | 50 min |
Properties: Excellent corrosion resistance, good ductility and high temperature strength.F304L and F316L are low carbon grades with better resistance to intergranular corrosion.
Applications: Widely used in chemical, petroleum, food processing, pharmaceutical, water treatment industries, especially in the need for good corrosion resistance and does not involve very high pressure.
ASTM A182 Duplex Stainless Steel
Duplex stainless steel combines the advantages of austenitic and ferritic stainless steels, and contains approximately equal amounts of austenitic and ferritic phases in its microstructure.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu | W |
| ASTM A182 F51 | MIN | 4.50 | 21.00 | 2.50 | 0.08 | |||||||
| MAX | 0.03 | 2.00 | 0.030 | 0.020 | 1.00 | 6.50 | 23.00 | 3.50 | 0.20 | |||
| ASTM A182 F53 | MIN | 6.00 | 24.00 | 3.00 | 0.24 | |||||||
| MAX | 0.03 | 1.20 | 0.035 | 0.020 | 0.80 | 8.00 | 26.00 | 5.00 | 0.32 | 0.50 | ||
| ASTM F55 | MIN | 6.00 | 24.00 | 3.00 | 0.20 | 0.50 | 0.5 | |||||
| MAX | 0.03 | 1.00 | 0.030 | 0.010 | 1.00 | 8.00 | 26.00 | 4.00 | 0.30 | 1.00 | 1 | |
| ASTM F60 | MIN | 4.50 | 22.00 | 3.00 | 0.14 | |||||||
| MAX | 0.03 | 2.00 | 0.030 | 0.020 | 1.00 | 6.50 | 23.00 | 3.50 | 0.20 |
Mechanical Property
| MATERIAL | ASTM A182 F51 | ASTM A182 F53 | ASTM A182 F55 | ASTM A182 F60 |
| T.S (MPA) | 620 min | 800 min | 750-895 | 655min |
| Y.S (MPA) | 450 min | 550 min | 550min | 450min |
| EL % | 25 min | 25 min | 25min | 25min |
| R/A % | 45 min | 15 min | 45min | 45min |
Properties: Combines the advantages of austenitic and ferritic stainless steels with high strength, excellent resistance to chloride stress corrosion cracking and pitting corrosion. Duplex stainless steel has good strength and corrosion resistance, high resistance to chloride ion stress corrosion cracking, and good corrosion resistance in chloride-containing media.
Applications: Mainly used in seawater, brine, ocean engineering, chemical industry and other high chloride ion and corrosive environment.
Applications of ASTM A182 Forged Fittings
Oil and Gas Industry
Power Industry
Chemical and Petrochemical Industry
Marine and Offshore Engineering
Paper Industry
You can get an offer for products in below material forms:
-Pipe and Tube (EN 10216-5, ASTM A213, ASTM A249, A312, A790,)
-Forged Fitting and Flange (ASTM A182 , ASTM A105,ASTM B564 )
-Butt Weld Fittings (ASTM A234, ASTM A403,ASTM A815)
-Round bar , Billet (ASTM A276, ASTM A479)
– Plate, Sheet, Strip(ASTM A240, EN 10028-7, A480)
-Bolting, Nuts（ASTM A193, A194, A320）
ASTM A182 Forged Fittings Exported Countries
We Export ASTM A182 Forged Fittings to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Europe, Africa, Asia, North America, South America, Middle East.etc