Stainless Steel 904L Forged Fittings Manufacturer & Supplier
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Benefits of SS 904L ASTM A182 Forged Fittings
- Non-magnetic nature improves performance in sensitive environments.
- Easy to weld and form for hassle-free fabrication.
- Excellent oxidation resistance at high temperature.
- Long service life reduces replacement frequency.
- Smooth surface finish for clean flow of media.
- Strong structural integrity even under high pressure.
- Available in tight tolerances for precise installations.
Uses of ASME SA182 904L Forged Fittings
Forged Stainless Steel 904L Fittings are widely used across several industries for their strong resistance to corrosion and pressure. In the chemical and petrochemical sectors, they are installed in pipelines and pressure systems handling aggressive fluids. In the oil and gas industry, they are used in offshore platforms and refineries. Pharmaceutical and food processing industries use them to ensure that operations are clean and free of contaminants. They are utilized in power plants, heat exchangers, seawater treatment systems, and pulp and paper mills. Their durability makes them suitable for the construction and cement industries.
Specification of Stainless Steel 904L Forged Fittings
Socketweld : 1/8" to 4" NB
Screwed-Threaded : 1/8" to 4" NB
ASTM A182/ASME SA182
ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Forge, Cast, Push, Press, etc.
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Socketweld Fittings, Screwed-Threaded Fittings
Types of Stainless Steel 904L Forged Fittings
Manufacturing Types
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Threaded Forged FittingsDesigned with internal or external threads, these fittings allow quick assembly and disassembly without welding.
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Socket Weld Forged FittingsThese fittings are joined by inserting the pipe into a recessed area of the fitting and welding around it, ensuring strong, leak-proof joints.
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Screwed FittingsSimilar to threaded types, screwed fittings are connected using screw threads, making installation simple and cost-effective.
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BSPTBushings help reduce the bore size in a fitting or valve connection by joining pipes of varying diameters.
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NPTEnd caps are used to seal a pipeline's end, shielding it from impurities and guaranteeing closed systems' safety.
Forms
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Forged ElbowElbows, which come in 45° and 90° varieties shift the direction of flow with little pressure loss.
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Forged BushingBushings help reduce the bore size in a fitting or valve connection by joining pipes of varying diameters.
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Forged TeeUsed to split or combine flow across three directions essential for branching pipeline.
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Forged CouplingOffer a safe connection between two pipes; threaded and socket-welded options are available.
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Forged PlugClose open pipe ends which are frequently used for isolation or testing.
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Forged CrossWith four openings, cross fittings help connect four pipes used when fluid distribution needs to occur in multiple directions.
Contact us today to discuss how Stainless Steel 904L Forged Fittings can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Stainless Steel Forged Fittings Grades We Offer
Stainless Steel 904L Socket Weld Fittings Dimensions
| Nominal Size | Socket Bore Dia | Bore Dia of Fittings | Socket Wall Thickness | Body Wall | Depth of Socket | Center to Bottom of Socket | |||||||||||||||
| D N | NPS | B | D | C | Gmin | J min | A | ||||||||||||||
| 3000 | 6000 | 9000 | 3000 | 6000 | 9000 | 3000 | 6000 | 9000 | 90° Elbow Tee Cross | 45° Elbow | |||||||||||
| ave | min | ave | min | ave | min | 3000 | 6000 | 9000 | 3000 | 6000 | 9000 | ||||||||||
| 6 | 1/8 | 10.9 | 6.1 | 3.2 | 3.18 | 3.18 | 3.96 | 3.43 | 2.41 | 3.15 | 9.5 | 11.0 | 11.0 | 8 | 8 | ||||||
| 8 | 1/4 | 14.3 | 8.5 | 5.6 | 3.78 | 3.30 | 4.60 | 4.01 | 3.02 | 3.68 | 9.5 | 11.0 | 13.5 | 8 | 8 | ||||||
| 10 | 3/8 | 17.7 | 11.8 | 8.4 | 4.01 | 3.50 | 5.03 | 4.37 | 3.20 | 4.01 | 9.5 | 13.5 | 15.5 | 8.0 | 11.0 | ||||||
| 15 | 1/2 | 21.9 | 15.0 | 11 | 5.6 | 4.67 | 4.09 | 5.97 | 5.18 | 9.53 | 8.18 | 3.73 | 4.78 | 7.47 | 9.5 | 15.5 | 19.0 | 25.5 | 11 | 12.5 | 15.5 |
| 20 | 3/4 | 27.3 | 20.2 | 14.8 | 10.3 | 4.90 | 4.27 | 6.96 | 6.04 | 9.78 | 8.56 | 3.91 | 5.56 | 7.82 | 12.5 | 19.0 | 22.5 | 28.5 | 13 | 14 | 19 |
| 25 | 1 | 34 | 25.9 | 19.9 | 14.4 | 5.69 | 4.98 | 7.92 | 6.93 | 11.38 | 9.96 | 4.55 | 6.35 | 9.09 | 12.5 | 22.5 | 27.0 | 32.0 | 14.0 | 17.5 | 20.5 |
| 32 | 1-1/4 | 42.8 | 34.3 | 28.7 | 22.0 | 6.07 | 5.28 | 7.92 | 6.93 | 12.14 | 10.62 | 4.85 | 6.35 | 9.70 | 12.5 | 27.0 | 32.0 | 35.0 | 17.5 | 20.5 | 22.5 |
| 40 | 1-1/2 | 48.9 | 40.1 | 33.2 | 27.2 | 6.35 | 5.54 | 8.92 | 7.8 | 12.70 | 11.12 | 5.08 | 7.14 | 10.15 | 12.5 | 32.0 | 38.0 | 38.0 | 20.5 | 25.5 | 25.5 |
| 50 | 2 | 61.2 | 51.7 | 42.1 | 37.4 | 6.93 | 6.04 | 10.92 | 9.5 | 13.84 | 12.12 | 5.54 | 8.74 | 11.07 | 16.0 | 38.0 | 41.0 | 54.0 | 25.5 | 28.5 | 28.5 |
| 65 | 2-1/2 | 73.9 | 61.2 | 8.76 | 7.62 | 7.01 | 16.0 | 41.0 | 28.5 | ||||||||||||
| 80 | 3 | 89.9 | 76.4 | 9.52 | 8.30 | 7.62 | 16.0 | 57.0 | 32.0 | ||||||||||||
| 100 | 4 | 115.5 | 100.7 | 10.69 | 9.35 | 8.56 | 19.0 | 66.5 | 41.0 | ||||||||||||
Stainless Steel 904L Threaded Fittings Dimensions
| Nominal Size | Center-to-End | Outside Diameter of Band | Wall Thickness | Length of Thread | |||||||||||
| DN | NPS | A | H | G min | min | mim | |||||||||
| 90° Elbows, Tees, Crosses | 45° Elbows | ||||||||||||||
| 2000 | 3000 | 6000 | 2000 | 3000 | 6000 | 2000 | 3000 | 6000 | 2000 | 3000 | 6000 | ||||
| 6 8 10 | 1/8 1/4 3/8 | 21 21 25 | 21 25 28 | 25 28 33 | 17 17 19 | 17 19 22 | 19 22 25 | 22 22 25 | 22 25 33 | 25 33 38 | 3.18 3.18 3.18 | 3.18 3.30 3.51 | 6.35 6.60 6.98 | 6.4 8.1 9.1 | 6.7 10.2 10.4 |
| 15 20 25 | 1/2 3/4 1 | 28 33 38 | 33 38 44 | 38 44 51 | 22 25 28 | 25 28 33 | 28 33 35 | 33 38 46 | 38 46 56 | 46 56 62 | 3.18 3.18 3.68 | 4.09 4.32 4.98 | 8.15 8.53 9.93 | 10.9 12.7 14.7 | 13.6 13.9 17.3 |
| 32 40 50 | 1-1/4 1-1/2 2 | 44 51 60 | 51 60 64 | 60 64 83 | 33 35 43 | 35 43 44 | 43 44 52 | 56 62 75 | 62 75 84 | 84 102 | 3.89 4.01 4.27 | 5.28 5.56 7.14 | 10.59 11.07 12.09 | 17.0 17.8 19.0 | 18.0 18.4 19.2 |
| 65 80 100 | 2-1/2 3 4 | 76 86 106 | 83 95 114 | 95 106 114 | 52 64 79 | 52 64 79 | 64 79 79 | 92 109 146 | 102 121 152 | 121 146 152 | 5.61 5.99 6.55 | 7.65 8.84 11.18 | 15.29 16.64 18.67 | 23.6 25.9 27.7 | 28.9 30.5 33.0 |
Stainless Steel 904L Forged Fittings Tolerance Chart
| Minimal Diam. | Outer Dia. For Bevel End | Inner Dia. For End | Elbow | Tee | Reducer | Cap | 180° Elbow | |||||
| DN | NPS | A | B | C | M | H | E | O | K | Roughness | ||
| 500-600 | 20-24 | +6.4/-4.8 | 4.8 | 3.2 | 3.2 | 3.2 | 3.2 | 4.8 | 9.6 | – | – | – |
| 650-750 | 26-30 | |||||||||||
| 4.8 | 4.8 | 4.8 | 4.8 | |||||||||
| 800-1200 | 32-48 | |||||||||||
| 1250-1500 | 50-60 | +9.6/-6.4 | 6.4 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | – | |||
| 1550-1750 | 62-70 | +12.7/-9.6 | 9.6 | 12.7 | 12.7 | – | ||||||
| 1800-2000 | 72-80 | +16/-12 | 12 | 16 | 16 | |||||||
| 15-65 | 1/2-2 1/2 | +1.6/-0.8 | 0.8 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 3.2 | 6.4 | 6.4 | 0.8 |
| 80-100 | 3-4 | 1.6 | 1.6 | 6.4 | ||||||||
| 125-200 | 5-8 | +2.4/-1.6 | ||||||||||
| 250-450 | 10-18 | +4/-3.2 | 3.2 | 2.4 | 2.4 | 2.4 | 2.4 | 2.4 | 9.6 | |||
Manufacturing Standards of Stainless Steel 904L Forged Fittings
Raw Material
Cutting
Sizing
Heat Treatment
Pickling
Beveling
Polishing
Sand Blasting
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications of Stainless Steel 904L Forged Fittings
Why Choose Midland Alloys Inc. for UNS N08904 Forged Fittings:
Midland Alloys Inc. is a trusted 904L SS Forged Fittings Supplier in Mumbai, known for producing high-quality fittings. We are ISO 9001:2015, PED 2014/68/EU certified, and include EN 10204 3.1/3.2 Mill Test Certificates with every shipment. We support TPI inspections by agencies such as TÜV, SGS, BV, and DNV. We collaborate with EPC contractors, maritime operators, chemical plants, and engineering firms. Our team ensures timely delivery, simple export documentation, and responsive client support.
We conduct hydrostatic, ultrasonic, radiographic, and PMI tests, as well as tensile, hardness, bend, and flattening tests, to ensure quality. That is why clients from the Middle East, Europe, and Southeast Asia continue to entrust us with repeat orders.
FAQs – SS 904L Forged Fittings
Yes. It has high nickel and copper content which raises both cost and corrosion resistance.
The price of 904L forged fittings in India typically ranges from ₹900 to ₹1,500 per kg, depending on the fitting type, size, pressure rating, and quantity.
There is no difference. UNS N08904 is the UNS designation and DIN 1.4539 is the EN number for the same grade.
