Stainless Steel 904L Couplings

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ASTM B366 WP904L Stainless Steel Couplings, Supplier of SS 904L Couplings, ASTM B649 904L Pipe Couplings, Stainless Steel 904L Couplings manufacturer

SS 904L Couplings Stockist, SS 904L Seamless Couplings Stockholder, AISI 904L Forged Couplings, SS 904L Threaded Couplings Dealer, ANSI B16.9 Stainless Steel 904L Couplings Distributor, EN 1.4539 Full Coupling NPT

Alloy 904L ASTM B366 WP904L Screwed Couplings, ANSI B16.9, ANSI B16.28, MSS SP-43, MSS SP-79 Stainless Steel 904L Reducing Coupling NPT, SUS 904L Half Coupling NPT Stockist, INOX 904L ASTM B366 WP904L Stainless Steel Couplings, Alloy 904L Butt Weld Couplings supplier, B366 UNS N08904 Threaded Full Couplings, DIN 1.4539 Threaded Half Coupling Wholesaler, UNS N08904 Threaded Reducing Coupling

Wrought Austenitic Stainless Steel 904L Socket Weld Full Coupling manufacturer, high quality Stainless Steel WP904L Couplings supplier, 904L SS SCH 10 Couplings distributor near you, SS Grade WP904L Socket Weld Half Coupling stockist, SS 904L Socket Weld Reducing Coupling stockholder, ASTM B366 WP904L NPT Threaded Couplings for Sale, ASTM B366 WP904L Stainless Steel Reducing Couplings at Best Price, ASTM B366 WP904L Compression Rigid Couplings suppliers, WP904L Stainless Seamless Couplings manufacturers, manufacturer of Stainless Steel Flanged Rigid Couplings WP904L, ASTM B366 WP 904L ANSI B16.9 Couplings dealer, Distributor of WP 904L Stainless Steel Weld Couplings, 904L Stainless Steel 36" Couplings, supplier of 904L Stainless Steel 24" Couplings SCH XXS, 904L Stainless Steel 36" SCH 160 Couplings exporter in India

  • What is 904L Stainless Steel Couplings?

An Alloy 904L Stainless Steel couplings are a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.

Anchor Fasteners India is a specialized manufacturer, supplier and exporter of SS 904L Full Coupling NPT, SS 904L Half Coupling NPT, SS 904L Reducing Coupling NPT, SS 904L Threaded Full Couplings, SS 904L Threaded Half Couplings, SS 904L Threaded Reducing Couplings, SS 904L Socket Weld Full Couplings, SS 904L Socket Weld Half Couplings, SS 904L Socket Weld Reducing Couplings, stainless steel 904L Couplings, SS 904L coupling fitting, SS 904L union Couplings, SS 904L tee Couplings, SS 904L gas line union Couplings, copper to pvc Couplings, Clamped or compression rigid couplings, Flanged rigid couplings, Rigid couplings, sleeve Couplings, Box Couplings, Muff Couplings, Split-muff Couplings, shaft couplings.

We Specialise in Manufacturing Large Diameter and High Thickness ASTM B366 Seamless, Welded Stainless Steel 904L Couplings. All SS 904L Couplings are manufactured in India, with raw materials coming from reputed Mills in India and overseas. We are stockholder and supplier of 904L Stainless Steel Couplings in a wide range sizes, surface treatment, and ASTM standards. UNS N08904 | WNR 1.4539 | Alloy 904L.

  • 904L Stainless Steel Couplings Specification

SS 904L Couplings SpecificationProduct Name: 904L Stainless Steel Couplings
We accept all small/large quantity orders.

  • 904L Grade: SUPER AUSTENITIC 904L Couplings/ SS 904L Couplings/ WNR 1.4539 Couplings/ UNS N08904 Couplings/ AISI 904L Couplings/ SUS 904L Couplings/ INOX 904L Couplings/ Alloy 904L Couplings/ URANUS B6 Couplings/ VdTÜV 421 Couplings/ SEW 400 Couplings/ 2RK65 Couplings/ RVS 904L Couplings/ SAE 904L Couplings/ NAS 255 Couplings/ AFNOR Z2 NCDU 25-20 / BS 904S13 / KS STS 317J5L / EN X1NiCrMoCu25-20-5 / NACE MR0175
  • Typical manufacturing specifications: ASTM B366 WP904L, ASTM B366 WP904L, ASME SB366 WP904L, ASME SB366 WP904L, ASTM A960, MSS SP-43, ASTM B16.9
  • Origin: European Origin, Indian Origin, US Origin, Korean Origin, Sweden Origin, Ukraine Origin, Japanese Origin Materials
  • Top 10 Manufacturer of 904L Couplings: Raccortubi S.p.A. Pipe Couplings, Italy, Erne Fittings Pipe Couplings, Austria, Melesi Pipe Couplings, Italy, Mega Pipe Couplings, Italy, Ulma Pipe Couplings, Spain, TecnoForge Pipe Couplings, Italy, BENKAN Corporation Pipe Couplings, Japan, BKL- Thai Benkan Pipe Couplings, Thailand, Lame S.r.l. Pipe Couplings, Italy, Metal far Pipe Couplings, Italy, Anchor Fasteners India, India
  • Great offer on: Pipe caps- DIN 28011 / EN 10253 (DIN 2617), Pipe Elbow -EN 10253 type A (DIN 2605), Pipe Tee/ T-pieces with same outlet – EN 10253 type A (DIN 2615), Concentric reducers- EN 10253 type B (DIN 2616)
  • Delivery: 15-20 days
  • Application: Research, science, and industry for sterile and aseptic process engineering.
  • Material: DIN 1.4305, DIN 1.4301, DIN 1.4307, DIN 1.4948, DIN 1.4401, DIN 1.4404, DIN 1.4919, DIN 1.4571, DIN 1.4541, DIN 1.4878, DIN 1.4460, DIN 1.4550, DIN 1.4961, DIN 1.4840, DIN 1.4845, DIN 1.4449, DIN 1.4438, DIN 1.4841, DIN 1.4006, DIN 1.4005, DIN 1.4021, DIN 1.4016, DIN 1.4104, DIN 1.4057, DIN 1.4125, DIN 1.4762, DIN 1.4742, DIN 1.4539, DIN 1.4542, DIN 1.4545, DIN 1.4534, DIN 1.4980, DIN 1.3964
S 904L Couplings Manufacturing Standards ASME: ANSI B16.9, ANSI B16.11, ANSI B16.28, MSS-SP-43, DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, EN: EN10253-1, EN10253-2
Size Range 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Thickness SCH: 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS, Custom Thickness
Dimension B16.5, BS 4504, EN-1092
Other Stainless Steel Couplings grades ASTM A403 WP 304/ 304L/ 304H/ 316/ 316L/ 317/ 317L/ 321/ 310/ 347/ 2205 Duplex Pipe Tee/ ASTM B366 904L Pipe Tee
Value Added Service Polish (Electro & Commercial)
Heat Treatment
Annealed & Pickled
Sand Blasting
Machining Etc.
Manufacture Standard: ASME B16.9, ASME B16.11, ASME B16.28, MSS SP-43, JISB2311, JIS B2312, JIS B2313, DIN 2605, DIN 2606, DIN2615, DIN2616, BG12459-90, GB/T13401, HGJ514, SH3408, SH3409, HG/T21635, HG/T21631

  • Types of 904L Stainless Steel Couplings

    • 904L Couplings supplier
    • Stainless Steel 904L Couplings
    • 904L Stainless Steel Couplings manufacturer
    • 904L Stainless Couplings
    • SS 904L Couplings manufacturer
    • Alloy 904L Stainless Steel Couplings
    • AISI 904L Couplings supplier
    • SUS 904L Couplings manufacturer
    • INOX 904L Couplings
    • Alloy 904L Couplings
    • ASTM B366 Stainless Steel 904L Couplings
    • WNR 1.4539 Couplings supplier
    • UNS N08904 Couplings manufacturer
    • Super Austenitic 904L Couplings
    • Grade 904L Stainless Steel Couplings
    • Stainless Steel Couplings Grade 904L
    • SS DIN 1.4539 Couplings
    • URANUS B6 Couplings manufacturer
    • VdTÜV 421 Couplings
    • BS 904S13 Couplings
    • SEW 400 Couplings manufacturer
    • 2RK65 Couplings
    • 904L Stainless Steel NPT Threaded Couplings
    • KS STS 317J5L manufacturer
    • RVS 904L Couplings
    • SAE 904L Couplings supplier
    • NAS 255 Couplings
    • ASTM B366 WP904L 100% X-Ray Welded Couplings
    • ASTM B366 WP904L Couplings
    • ASME SB366 Couplings manufacturer
    • ASTM B366 UNS N08904 Couplings

    • ASME SB366 UNS N08904 Couplings manufacturer
    • 904L Stainless Steel Seamless Couplings
    • ASTM B366 Seamless Couplings exporter
    • 904L Stainless Steel Welded Couplings
    • ASTM B366 Welded Couplings manufacturer
    • ASTM B366 WP 904L Couplings
    • 904L Stainless Steel Forged Couplings
    • ASTM B366 Weld Couplings supplier
    • 904L Stainless Steel Threaded Couplings
    • 904L Stainless Steel Screwed Couplings
    • 904L Stainless Steel Butt Weld Couplings
    • 904L Stainless Steel Threaded Reducing Coupling
    • SS 904L Socket Weld Full Coupling manufacturer
    • 904L Stainless Steel SCH 10 Couplings
    • SS 904L Socket Weld Half Coupling manufacturer
    • SS 904L Socket Weld Reducing Coupling
    • 904L Stainless Steel Reducing Couplings
    • 904L Stainless Steel Compression Rigid Couplings
    • ASTM B366 WP904L 36" Couplings
    • ASTM B366 WP904L 24" Couplings SCH XXS
    • ASTM B366 WP904L 36" SCH 160 Couplings
    • ASTM B366 WP904L 24" Couplings SCH 80S
    • ASTM B366 WP904L Couplings 24" x 12" SCH 160
    • ASTM B366 WP904L Seamless Couplings manufacturer
    • ASTM B366 WP904L ANSI B16.9 Couplings
    • Seamless Couplings, ASTM B366 WP Grade

  • 904L Stainless Steel Couplings Packaging & Shipping:

904L Stainless Steel Couplings Packed

904L Stainless Steel Couplings Packed

SS 904L Couplings Packing: We focus on every procedure to assure quality, the package we usually take is pack WNR 1.4539 Couplings with environmental poly bags, and then in free fumigation wooden cases or wooden palte. Also can accept customized package such as OEM by negotiation.

Anchor Fasteners India offers just about everything to meet your UNS N08904 Couplings pack requirements. Lot of emphasis is placed on the packing and packaging. The AISI 904L Couplings are packed in wooden corrugated boxes foiled in plastic wraps and bubble wraps.

904L Stainless Steel Couplings Marking: All SUS 904L Couplings are marked with size and specification. Or as per customer’s requirement;

So, besides the fact that we can arrange freight transportation for you, we can before that:

  • Specifically mark parts or packages;
  • Provide for a special packing according to what is required by the shipping method or by you.

We mark the INOX 904L Couplings as needed with the most suitable marking technique.

When packaging and packing, our experienced warehouse staff systematically takes the greatest precautions for your Alloy 904L Couplings to be optimally protected during transportation. We pack the URANUS B6 Couplings according to the appropriate method: strapped pallet, wooden crate, overseas packing (ISPM15).

Markings on the Stainless Steel 904L, UNS N08904,  WNR 1.4539 Couplings

The full identification of the Couplings should be continuously marked down its whole length, including:

  1. Nominal Couplings Size of 904L Couplings
  2. Schedule (Wall Thickness) eg SCH 40 SS 904L Couplings
  3. Specification of SS 904L Couplings
  4. Grade of Alloy 904L Couplings
  5. Method of Manufacture (Seamless or Welded) of of SS 904L Couplings
  6. Heat Number for of SS 904L Couplings
  7. Manufacturer’s Name or Symbol of of 904L SS Couplings
  8. Customized marking available for SS 904L Couplings


Get 904L Stainless Steel Couplings price list, send an email to us at [email protected], [email protected]

  • SS 904L Other Products Stock List

  • 904L Stainless Steel Couplings Chemical Composition
































  • 904L Stainless Steel Couplings Mechanical Properties


Tensile Strength (MPa) min

Yield Strength 0.2% Proof (MPa) min

Elongation (% in 50mm) min


Rockwell B (HR B)

Brinell (HB)





70-90 typical


  • 904L Stainless Steel Couplings Corrosion Resistance

The high content of alloying elements in 904L Couplings gives the alloy exceptionally good resistance to uniform corrosion.

Uniform Corrosion in pickling acid* at 25°C

ALLOY Corrosion Rate, mm/year
316L >6
904L 0.47
254 SMO® 0.27
654 SMO® 0.06

*Composition: 20% HNO3 + 4 HF

Uniform Corrosion in wet process phosphoric acid at 60°C

ALLOY Corrosion Rate, mm/year
316L >5
904L 1.2
254 SMO® 0.05

Composition: 54% P2O5, 0.06% HCI, 1.1% HF, 4,0% H2SO4, 0.27% Fe2O3, 0.17% AI2O3, 0.10% SiO2, 0.20% CaO and 0.70% MgO.

Corrosion rates in fatty acid column for the distillation of tall oil at 253°C

ALLOY Corrosion Rate, mm/year
316L 0.88
317LMN 0.29
904L 0.056
254 SMO® 0.01

  • Physical Properties of 904L Stainless Steel Couplings



Elastic Modulus

Mean Co-eff of Thermal Expansion (µm/m/°C)

Thermal Conductivity

Specific Heat 0-100°C

Electrical Resistivity




At 20°C

At 500°C










33.5 Microhm-in at 68°F
95.2 Microhm-cm at 20°C

Alloy 904L Couplings Melting Range:

Mean Coefficient of Thermal Expansion

Temperature Range    
°F °C in/in/°F cm/cm/°C
68–212 20–100 8.5 x 10-6 15.3 x 10-6

SS 904L Couplings Special characteristics

Temperature range: Density kg/dm³ Hardness (HB)
pressure bomb/pressure vessel
– 60°C bis 400°C
7,9 ≤ 230
excellent stability against pitting corrosion, stress corrosion and intergranular corrosion

  • 904l Material Specifications



Old British


Swedish SS










Normen KS AFNOR NAS Japanese JIS G4304/4305  
VdTÜV 421, SEW 400 STS 317J5L Z2 NCDU 25-20 NAS 255 SUS 904L  

  • 904L Stainless Steel Couplings Possible Alternative Grades

904l Stainless Steel Couplings Equivalent Grades


Features of alternative grades of SS 904L


A lower cost alternative, but with much lower corrosion resistance.


A higher resistance to pitting and crevice corrosion is needed.


A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300°C.)

Super duplex

Higher corrosion resistance is needed, together with a higher strength than 904L.

The steel shall conform to the requirements as to chemical composition specified.
The material shall conform to the mechanical properties specified.

SUS 904L Couplings Heat Resistance

Grade 904L stainless steels Couplings offer good oxidation resistance. However, the structural stability of this grade collapses at high temperatures, particularly above 400°C.

AISI 904L Couplings Heat Treatment

Grade 904L stainless steels Couplings can be solution heat-treated at 1090 to 1175°C, following by rapid cooling. Thermal treatment is suitable for hardening these grades.

SS 904L Couplings Fabrication

Grade 904L stainless steel Couplings are high purity steels with low sulphur content. They can be machined using any standard methods. These grades can be readily bent to a small radius under cold conditions. Although subsequent annealing is not required in most cases, it should be carried out when the fabrication is performed under severe stress corrosion cracking conditions.

904L Stainless Steel Couplings producing through Cold forming

904L stainless steel Couplings is quite ductile and forms easily. The addition of molybdenum and nitrogen implies more powerful processing equipment may be necessary when compared with the standard 304/304L grades.

Stainless Steel 904L Couplings Machining

The cold work hardening rate of Alloy 904L Couplings makes it less machinable than 410 and 304 stainless steel Couplings.

904L Couplings Welding

Welding of grade 904L stainless steels Couplings can be performed using all conventional methods. This grade does not require pre-heat and post-weld heat treatments. Grade 904L Couplings can be subjected to hot cracking in constrained weldment. Grade 904L electrodes and rods are used for welding grade 904L steel Couplings according to AS 1554.6.

Alloy 904L Couplings Hot Forming

Working temperatures of 1562 – 2102°F (850 –1150°C) are recommended for hot working processes. It is important that the entire workpiece be quenched from temperatures above 2012°F (1100°C). In the event of partial heating or cooling below 2012°F (1100°C), or if the cooling has been too slow, hot working should always be followed by a solution anneal and quenching. 904L Couplings should be solution annealed at 1940 – 2084°F (1060 –1140°C).

904L Stainless Steel Couplings Applications & Usage:

Some of the major applications of grade stainless steel 904L Couplings include:

  • SAE 904L Couplings for Air Pollution Control- scrubbers for coal-fired power plants
  • UNS N08904 Couplings mainly used for Seawater cooling devices
  • SS 904L Couplings can be use in Wiring in electrostatic precipitators
  • WNR 1.4539 Couplings are used in Oil refinery components
  • AISI 904L Couplings also useful for Gas scrubbing plants
  • SUS 904L Couplings are commonly used by Pulp and paper processing industries
  • INOX 904L Couplings are also suitable for Acetic, phosphoric and sulphuric acid processing plants
  • Alloy 904L Couplings available for Oil and Gas Production- offshore process equipment
  • Offshore, sea water technology, chemical industry, good stability against reducing acids of medium strength like sulphuric acid and phosphoric acid and various chloric media, refinery, paper industry, pulp industry

Export Destinations for 904L Stainless Steel Couplings

Anchor Fasteners India is a leading exporter and distributor of stainless steel 904L Couplings in India and international markets such as Malaysia, Iran, Germany, UK, Canada, UAE, Bahrain, Indonesia, Mexico, Chile, Brazil, Peru, Nigeria, Kuwait, Jordan, Thailand (Bangkok), Saudi Arabia, Venezuela, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan. A widest range of SS 904L Couplings ready stock available in Middle East countries including Bahrain, Iraq, Israel, Jordan, Cyprus, Egypt, Iran, Kuwait, Lebanon, Oman, Saudi Arabia, Syria, Turkey, United Arab Emirates, Palestine, Qatar and Yemen. Get best deals from distributor of 904L Stainless Steel Couplings.

Domestic Supply Destinations for Stainless Steel 904L Couplings and UNS N08904 Polished Couplings

Our SS 904L products are supplied to all major Industrial areas and cities in India such as Mumbai, Ahmedabad, Chennai, Bangalore, Hyderabad, Assam, Siliguri, Kolkata, Surat, Pune, Nagpur, Indore, Thane, Bhopal, Visakhapatnam, Delhi, Vadodra, Nashik, Thoothukudi, Rajkot, Aurangabad, Salem, Bhilai, Bhiwandi, Bikaner, Jamshedpur, Warangal, Nellore, Agartala, Ranchi, Coimbatore, Raipur, Mysore, Mangalore, Kochi (Cochin), Bhavnagar, Tirupur, Ankleshwar, Bhubaneswar and Faridabad. For any location in your country you can find here trader of Stainless Steel 904L Couplings in India, If your requirement is urgent we can offer a priority shipping service, but also if time is not so critical we can offer more cost-effective options to ensure you get the best value for money.

Available Couplings Stock, a huge selection of steel Couplings inventory:

  • 904l Couplings Price

India’s Prominent manufacturer & supplier of Stainless Steel 904L Couplings. We maintain bulk stock of 904L Couplings. Supplier & distributor of Alloy 904L Couplings globally in any size & schedule. We have a large inventory 904L Couplings, UNS N08904 SS 904L screwed Couplings, WNR 1.4539 SS Grade WP904L Couplings, Source for ASME SB366 Stainless Steel WP 904L threaded Couplings, Alloy 904L Threaded Reducing Coupling. We have extended our stock program for you: ASME B16.9 stainless steel grade 904l Large Diameter and High Thickness ASTM B366 Seamless, Welded Stainless Steel Couplings, available from stock.

Distributor, Manufacturer, Suppliers, Stockholder, Traders, Wholesaler, Dealer, Distributor, Importer & Exporter, Fabricator, Stockist of ASTM B366 WP904L Stainless Steel 904L Couplings
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