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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

10 7 月, 2025