SS 904L Forged Fittings

SS 904L forged fittings are renowned for their exceptional strength, durability, and resistance to aggressive environments, making them a preferred choice for engineers working on projects where safety, longevity, and cost efficiency are critical. Manufactured from stainless steel grade 904L, a high-alloy austenitic material enriched with nickel, chromium, molybdenum, and copper, these fittings are designed to withstand harsh conditions including strong reducing acids, seawater, and chloride-induced stress corrosion. The forging process begins with premium billets, heated and shaped under controlled pressure to refine the grain structure and eliminate internal weaknesses common in cast fittings. This ensures superior mechanical strength and leak-proof performance. Precision machining, threading, and stringent testing further guarantee compliance with ASTM, ASME, and ANSI standards. Such meticulous production makes SS 904L forged fittings an engineer’s first choice for critical applications in petrochemicals, offshore drilling, marine engineering, pharmaceutical processing, and high-purity water systems. Their ability to operate under high pressure, resist corrosion for decades, and minimize maintenance downtime offers industries substantial cost savings. Beyond being connectors, these fittings are precision-built components that safeguard entire systems, ensuring efficiency, safety, and long-lasting reliability even in the toughest environments.

The historical presence of SS 904L forged fittings in India highlights their role in supporting the nation’s industrial growth and modernization. Introduced during the expansion of chemical, refinery, and marine sectors in the latter half of the 20th century, they quickly became synonymous with trust and endurance. Over time, Indian manufacturers refined their forging expertise, blending traditional metallurgical skills with global technologies to supply both domestic and international markets. Today, India stands as a leading hub for producing SS 904L forged fittings, exporting reliability and engineering excellence worldwide. Engineers consistently select these fittings not only for their superior corrosion resistance and long service life but also for the economic advantage they bring through reduced replacements, lower operational costs, and sustainable performance in extreme conditions. Their legacy in India mirrors the nation’s industrial journey—resilient, adaptive, and forward-looking. SS 904L forged fittings align perfectly with user needs by embodying expertise, trustworthiness, and proven performance. More than industrial hardware, they are symbols of India’s engineering mastery, combining strength, cost-effectiveness, and historical reliability. Choosing SS 904L forged fittings means investing in safety and durability today while carrying forward a legacy of excellence that continues to power India’s industries and strengthen its global footprint.

904L SS Forged Fittings Equivalent Grades

STANDARD	UNS	WNR.	JIS	BS	KS	AFNOR	EN
SS 904L	N08904	1.4539	SUS 904L	904S13	STS 317J5L	Z2 NCDU 25-20	X1NiCrMoCu25-20-5

SS 904L Socket Weld Elbow

SS 904L Forged Elbow, UNS N08904 Threaded Elbow, SUS 904L Forged Elbow, ASME SA 182 SS F904L 45 deg Threaded Elbow, Stainless Steel 904L 90 deg Forged Elbow

SS 904L Forged Tee

ASME SA182 SS 904L Socket Weld Tee, ASTM A182 Stainless Steel 904L Forged Equal Tee, DIN 1.4539 Reducing Tee, Stainless 904L Unequal Tee, SS 904L Reducing Tee, SS 904L Threaded Equal Tee

SS 904L Forged Cross

SS A182 F904L Threaded Equal Cross, UNS N08904 / DIN 1.4539 Forged Cross, ASME SA182 SS 904L Socketweld Equal Cross, SS 904L Threaded Cross, Stainless 904L Reducing Cross, SS 904L Forged Unequal Cross Supplier

SS 904L Full Coupling

DIN 1.4539 Threaded Full Coupling, UNS N08904 Forged Full Coupling, ASME SA 182 Stainless Steel 904L Socketweld Full Coupling, ASTM A182 904L SS Full Coupling

SS 904L Forged Half Coupling

ASTM A182 F904L Stainless Steel Socket Weld Half Coupling, SS UNS N08904 Half Coupling, ANSI B16.11 SS 904L Threaded Half Coupling

SS 904L Forged Pipe Cap

UNS N08904 Forged Pipe End Cap, Stainless Steel 904L Threaded Pipe Cap, ASTM A182 F904L Stainless Steel Socketweld Pipe Cap, ASME SA 182 SS 904L Forged Pipe End Cap

SS 904L Forged Union

UNS N08904 Socketweld Union, ANSI B16.5 Stainless Steel 904L Union, ASTM A182 F904L Stainless Steel Threaded Union, ASME SA 182 SS 904L Forged Union

SS 904L Forged Bushing

UNS N08904 Bushing, B16.36 Stainless Steel 904L Hex Head Bushing, ASTM A182 F904L Stainless Steel Threaded Bushing, ASME SA 182 SS 904L Forged Threaded Bushing

SS 904L Forged Nipple

UNS N08904 Threaded Nipple, B16.36 SS 904L Socketweld Nipple ASTM A182 F904L Stainless Steel Swage Nipple, ASME SA 182 SS 904L Hex Nipple, SS 904L Screwed Pipe Nipple

Stainless Steel Forged Fittings Specification :

ASTM A182 / ASME SA182

Dimension Standard :

ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799

Size :

1/8" NB to 4" NB

Type :

Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)

Rating Pressure :

Threaded End - 2000 /3000/ 6000 LBS. Socket-weld End - 3000 / 6000/ 9000 LBS.

Chemical Composition of SS 904L Forged Fittings

C	Cr	Cu	Mn	Mo	Ni	P	S
Max			Max			Max	Max
0.02	19.0-23.0	2.0	4.0-5.0	23.0-28.0	0.045	0.035	1.0

Mechanical Properties Of Stainless Steel 904L Forged Fittings

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B)	Brinell (HB)
904L	490	220	36	70-90 typical	150

Physical Properties of 904L Stainless Steel Forged Fittings

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100C (J/kg.K)	Elec Resistivity (nΩ.m)
Grade	Density (kg/m3)	Elastic Modulus (GPa)	0-100C	0-315C	0-538C	At 20C	At 500C	Specific Heat 0-100C (J/kg.K)	Elec Resistivity (nΩ.m)
904L	7900	190	15	-	-	11.5	-	500	952