Stainless steel 904L tube fittings are components used to connect and secure stainless steel tubes in various applications. Stainless steel 904L is a non-stabilized austenitic stainless steel with low carbon content, which offers excellent corrosion resistance, particularly in aggressive environments such as sulfuric acid environments.
Tube fittings made from stainless steel 904L are ideal for industries such as chemical processing, petrochemical, pharmaceutical, marine, and offshore applications where resistance to corrosion and high temperatures is essential.
SPECIFICATIONS OF 904L STAINLESS STEEL COMPRESSION TUBE FITTINGS
| Standards | ASTM A276, ASME SA479 ASTM A182, ASME SA182 |
| Types | Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
| Size | 1/16 OD to 2 OD, Od to 50mm OD |
| Grade | SS 904L / WNR 1.4539 / UNS N08904 / AISI 904L / SUS 904L / INOX 904L / Alloy 904L / URANUS B6 / SEW 400 / 2RK65 / RVS 904L |
| Ends | Threaded, Welding, JIC |
| 904L Tube Fittings Other Trader Name | Grade 904L Stainless Steel Instrumentation FittingsASTM B649 UNS N08904 Pneumatic FittingsSS 904L Compression Fittings904L Stainless Steel Push-To-Connect FittingsASTM A276 UNS N08904 Stainless Steel Hydraulic FittingsAISI 904L Stainless Steel Hydraulic Hose FittingsStainless Steel 1.4539 904L Compression Tube Fittings904L EN 1.4539 Instrumentation Tube FittingsAISI 904L Double Ferrule Fittings904L SS Double Ferrule Tube FittingsASTM B649 UNS N08904 904L Ferrule FittingsAlloy 904L Twin Ferrule Fittings904L Alloy JIC FittingsStainless Steel Alloy 904L Flare Fittings |
| Pipe Tread | NPT (ASME B1.20.1, MILL-P-71058)ISO Parallel – BSPP (BS 2779, ISO 228, JIS B 0202)ISO Tapered – BSPT (BS 21, ISO 7, JIS B 0203)ISO / BSP (Gauge) (ISO 228, BS 2779)Unified (SAE) (ASME B 1.1) |
| Test certificate | ECE R110, EC-79, NACE MR0175/ISO 15156 and MR0103. |
| Pressure | 1000 Psi, 3000 Psi, 6000 Psi, 10000 Psi |
| Dimensions | Items Made from Hex – ASTM A276; Items made from Round Bar- ASTM A182 |
STAINLESS STEEL 904L TUBE FITTINGS STANDARD CONFIGURATIONS
- Tube to Tube – Tee, Bulk Head, Straight, Elbow, Cross
- Tube to Male – Male Tee, Male Elbow, Male Stud
- Female Connector – Female Elbow, Tee, Straight
- Positionable Elbow & Tee (Swivel)
- Tube Closure – Cap, Plug
- Ferrule Set, Weld Connector & Nut
GRADE 904L STAINLESS STEEL TUBE FITTINGS SIZES
Grade 904L Stainless Steel Seamless Tube Fittings
- Size: ⅛” to 2”
- Pressure Rating: 3000psi -10000psi
- Threads: NPT, BSPT, BSPP
ASTM B649 UNS N08904 Welded Tube Fittings & Tube Adapters
- Size: 24” to 96” or custom
- Pressure Rating: 3000 psi-10000psi
- Threads: NPT, BSPT, BSPP
TYPES OF 904L STAINLESS STEEL COMPRESSION TUBE FITTINGS
Grade 904L Stainless Steel Tube to Male Pipe Thread
- 904L Stainless Steel Tube to Male Connector
- AISI 904L Stainless Steel Tube to Bulkhead Male Connector
- AISI 904L Tube to Male Elbow (45 Degree)
- ASTM A276 UNS N08904 Stainless Steel Tube to Male Branch Tee
- ASTM B649 UNS N08904 Tube to Male Run Tee
ASTM B649 UNS N08904 Tube to Female Pipe Thread
- Grade 904L Stainless Steel Tube to Female Connector
- SS 904L Tube to Bulkhead Female Connector
- 904L Stainless Steel Tube to Female Elbow
- Stainless Steel 1.4539 904L Tube to Female Branch Tee
- 904L EN 1.4539 Tube to Female Run Tee
SS 904L Tube Ends
- ASTM B649 UNS N08904 Tube Cap
- 904L Alloy Plug
- 904L SS Cap for Tube End
- 904L EN 1.4539 Caps and Plugs
- SS 904L NPT Thread Cap
904L Stainless Steel Tube to Tube
- SS 904L Tube to Tube Union
- Grade 904L Stainless Steel Tube to Tube Reducer Union
- ASTM A276 UNS N08904 Stainless Steel Tube to Tube Bulkhead Union
- 904L EN 1.4539 Tube to Tube Bulkhead Reducer Union
- AISI 904L Tube to Tube Bulkhead Union Elbow
ASTM A276 UNS N08904 Stainless Steel Port Connector
- SS 904L Reducer
- Grade 904L Stainless Steel Bulkhead Reducer
- ASTM A276 UNS N08904 Stainless Steel Male Adapter
- 904L EN 1.4539 Female Adapter
- AISI 904L Weld Adapter
AISI 904L Stainless Steel Weld Fittings
- SS 904L Tube Socket Weld Union
- Grade 904L Stainless Steel Tube Socket Weld Elbow
- ASTM A276 UNS N08904 Stainless Steel Male Pipe Weld Connector
- 904L EN 1.4539 Male Pipe Weld Elbow
Stainless Steel 1.4539 904L Special Fittings
- SS 904L Sanitary Flange
- Grade 904L Stainless Steel Lap Joint Flange Connector
- ASTM A276 UNS N08904 Stainless Steel Integral Flange Connector
- 904L EN 1.4539 Vent Protector
904L EN 1.4539 Hose Fittings
- SS 904L Hose Male Adapter
- Grade 904L Stainless Steel Hose Tube Adapter Swaged
- ASTM A276 UNS N08904 Stainless Steel Hose Port Connector – Serrated
- 904L EN 1.4539 Barbed Male Adapter
- AISI 904L Hose Connector Sleeve
AISI 904L Tube Fittings Accessories
- SS 904L Front Ferrule
- Grade 904L Stainless Steel Back Ferrule
- ASTM A276 UNS N08904 Stainless Steel Nut
- 904L EN 1.4539 Fitting Gasket
- AISI 904L O-Seal Connector Lock Nut
DIMENSIONS STANDARDS OF 904L ALLOY DOUBLE FERRULE FITTINGS
| NPT Threads Dimensions | |||||
| NPT Thread | Dash | Male Thread | Female | ||
| Size & Pitch | Size | Minor OD | Thread ID | ||
| inch – TPI | mm | inch | mm | inch | |
| 1/8 – 27 | -2 | 9.9 | 0.39 | 8,4 | 0.33 |
| 1/4 – 18 | -4 | 13,2 | 0.52 | 11,2 | 0.44 |
| 3/8 – 18 | -06 | 16,6 | 0.65 | 14,7 | 0.58 |
| 1/2 – 14 | -8 | 20,6 | 0.81 | 17,8 | 0.7 |
| 3/4 – 14 | -12 | 26,0 | 1.02 | 23,4 | 0.92 |
| 1 – 11.1/2 | -16 | 32,5 | 1.28 | 29,5 | 1.16 |
| 1.1/4 – 11.1/2 | -20 | 41,2 | 1.62 | 38,1 | 1.5 |
| 1.1/2 – 11.1/2 | -24 | 47,3 | 1.86 | 43,9 | 1.73 |
| 2 – 11.1/2 | -32 | 59,3 | 2.33 | 56,4 | 2.22 |
| 2.1/2 – 8 | -40 | 71,5 | 2.82 | 69,1 | 2.72 |
| 3 – 8 | -48 | 87,3 | 3.44 | 84,8 | 3.34 |
SS 904L FERRULE TUBE FITTINGS PRESSURE RATINGS
NPT/ISO Ratings as per ASME B31.3 (Ambient temperature Process Piping)
NPT/BSPT | Male Straight | Shape | Female Straight | Shape |
| 1/16 | 10000 | 9500 | 7500 | 7000 |
| 1/8 | 09100 | 9100 | 6400 | 5500 |
| 1/4 | 07500 | 7500 | 6600 | 5600 |
| 3/8 | 07200 | 7200 | 5300 | 5000 |
| 1/2 | 06600 | 5800 | 5200 | 4500 |
| 3/4 | 06400 | 6400 | 4300 | 3500 |
| 1 | 04600 | 4600 | 4500 | 3900 |
| 1-1/4 | 03500 | 3500 | 3500 | 3100 |
| 1-1/2 | 02900 | 2900 | 3200 | 2500 |
| 2 | 02600 | 2600 | 2700 | 2300 |
| BSPT & BSPP Threads Dimensions | |||||||||
| BSPT & BSPP | DASH | BSPT MALE | BSPP MALE | BSPT FEMALE | BSPP FEMALE | ||||
| SIZE & PITCH | SIZE | THREAD OD | THREAD OD | THREAD ID | THREAD ID | ||||
| inch – TPI | mm | inch | mm | inch | mm | inch | mm | inch | |
| 1/8 – 28 | -2 | 9,5 | 0.37 | 9,6 | 0.38 | 8,4 | 0.33 | 8,6 | 0.34 |
| 1/4 – 19 | -4 | 12,8 | 0.5 | 13,0 | 0.51 | 11,2 | 0.44 | 11,9 | 0.47 |
| 3/8 – 19 | -6 | 16,3 | 0.64 | 16,5 | 0.65 | 14,7 | 0.59 | 15,2 | 0.6 |
| 1/2 – 14 | -8 | 20,4 | 0.8 | 20.8 | 0.82 | 18,3 | 0.72 | 19,1 | 0.75 |
| 5/8 – 14 | -10 | 22,5 | 0.89 | 22,8 | 0.9 | 20,6 | 0.81 | 20,8 | 0.82 |
| 3/4 – 14 | -12 | 25,9 | 1.02 | 26,3 | 1.04 | 23,9 | 0.94 | 24,6 | 0.97 |
| 1 – 11 | -16 | 32,6 | 1.28 | 33,1 | 1.3 | 29,7 | 1.17 | 30,7 | 1.21 |
| 1.1/4 – 11 | -20 | 41,1 | 1.62 | 41,8 | 1.64 | 38,6 | 1.52 | 39,4 | 1.55 |
| 1.1/2 – 11 | -24 | 47,0 | 1.85 | 47,7 | 1.88 | 44,5 | 1.75 | 45,5 | 1.79 |
| 2(11) | -32 | 58,6 | 2.31 | 59,5 | 2.34 | 56,4 | 2.22 | 57,4 | 2.26 |
| 2.1/2 – 11 | -40 | 74,1 | 2.92 | 75.1 | 2.95 | 71,9 | 2.83 | 72,6 | 2.86 |
| 3 – 11 | -48 | 86,6 | 3.41 | 87,9 | 3.46 | 84,6 | 3.33 | 85,4 | 3.36 |
TYPES OF 904L UNS N08904 / 1.4539 STAINLESS STEEL SEAMLESS & WELDED TUBES
| SS 904L Seamless Tubes | UNS N08904 Seamless Tubes | WNR 1.4539 Seamless Tubes |
| SS 904L Welded Tubes | Stainless Steel 904L Round Tubes | Stainless Steel 904L Square Tubes |
| Stainless Steel 904L Rectangular Tubes | Fabricated 904L Stainless Steel Tubes | 904L Electropolished Tubes |
APPLICATIONS OF UNS N08094 / 1.4539 & 904L STAINLESS STEEL SEAMLESS & WELDED TUBES
Our Stainless Steel 904L Tube Fittings find utility in a wide range of industries and applications, including:
- Off-Shore Oil Drilling Companies
- Power Generations
- Petrochemicals
- Specialty Chemicals
- Pharmaceutical Equipment
- Chemical Equipments
- Sea Water Equipments
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
- Other Applications
FEATURES AND BENEFITS :
- Corrosion Resistance: Stainless Steel 904L is known for its exceptional corrosion resistance, making it an excellent choice for industries that work with harsh chemicals, acids, and saltwater conditions. This characteristic ensures a longer service life and lower maintenance expenses.
- High Strength: Our Stainless Steel 904L Tube Fittings have high tensile and yield strength, ensuring structural integrity and reliability in crucial applications.
- Heat Resistance: These fittings keep their mechanical qualities even at high temperatures, making them ideal for applications that require consistent performance under changing heat circumstances.
- Versatility: Our options, which include a variety of sizes, standards, threads, and fitting types, provide the flexibility required to meet a wide range of project requirements.
- Precision Engineering: Our Tube Fittings go through rigorous manufacturing processes, resulting in precise dimensional precision, leak-free couplings, and smooth performance.
- Ease of Installation: The fittings are intelligently designed for rapid and easy installation, reducing downtime and labor expenses.
STAINLESS STEEL 1.4539 904L DOUBLE FERRULE TUBE FITTINGS EQUIVALENT
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | – | – | – | – | – |
AISI 904L STAINLESS STEEL INSTRUMENTATION TUBE FITTINGS CHEMICAL COMPOSITIONS
| Grade | C | Mn | Si | P | S | Cr | MoNi | N | Fe |
| SS 904L | 0.2 max | 1.5 max | 0.75 max | 0.04 max | 0.030 max | 23 – 30 | 0.50 max | 0.25 | Balance |
ASTM A 276 UNS N08904 STAINLESS STEEL SINGLE FERRULE FITTINGS MECHANICAL PROPERTIES
| Density | Melting Point | Tensile Strength | Yield Strength (0.2 Offset) | Elongation |
| 7.5 g/cm3 | 1510 °C (2750 °F) | Psi – 75,000, MPa – 485 | Psi – 40,000, MPa – 275 | 20 % |
When you choose Aashish Metals as your Stainless Steel 904L Tube Fittings Supplier, you get unmatched quality, performance, and service. Our commitment to innovation, dependability, and client satisfaction distinguishes us in the business. With a track record of success and a wide choice of options, we can help you locate the ideal SS 904L Tube Fittings for your project.
