Piyush Steel is a leading manufacturer and exporter of the excellent quality of Stainless steel 904L Flanges. These flanges are developed by using the standards quality of raw materials to ensure high quality and durability. The material for SS flanges is under ASME designation like SA105, SA266, etc. Additionally, there are many other industry standards that are referred to as WNR 1.4539 that might be used in some cases on ASME work. These flanges are also known as UNS N08904. To all the buyers we are providing the flanges in standards specifications that vary in dimensions, standards, pressure ratings, sizes, and face types. On the demand of buyers, these flanges are provided to them in customized specifications.
Table Of Content
Product features-
Because of many good features that are found in the Stainless steel 904L Flanges, the demand and use have become high among the industrialists. These flanges possess many good features like-
• Resistance to stress corrosion cracking
• Pitting and oxidation resistance
• Holds high temperature
• Holds heavyweight
• Rugged construction
• Toughness
• Durability
• Greater general corrosion resistance
• Anti-corrosiveness
• Long-lastingness
• Accuracy in dimensions
• Smoothness in surface finishes
Alloy details-
904L is the austenitic stainless steel. The molybdenum addition provides its superior resistance to localized attacks that includes crevice corrosion and pitting by chlorides and greater resistance to reducing acids. Additions of copper alloy provide corrosion resistance to various concentrations of the sulfuric acid. The high alloy content also provides it high resistance to chloride stress corrosion cracking but the alloy is susceptible. The low carbon content is making it greatly resistant to sensitization through welding that prevents intergranular corrosion. It is thus used in many industrial applications like heat exchangers, pollution control, etc.
Manufacturing of the flanges-
There at our highly operational industry, the manufacturing process of Stainless steel 904L Flanges starts by using the purest quality of raw materials. The raw substances that we are using for the fabrication of flanges are well tested to assure that no poor quality of production is executed of flanges. The manufacturing begins under the strict guidance of professional experts in compliance with the proper use of available modern machinery and latest technology. The quality control team is hired that are looking at the product quality maintenance so that no bad quality of flanges is manufactured and supplied. The designing and fabrication of flanges are done by considering raw material quality standards and production guidelines.
Testing of the flanges-
Before the Stainless steel 904L Flanges are packed are dispatched to the respected buyers, its testing is conducted properly. The tests are done with the clear motive of checking how good the quality of flanges that are produced is. Testing conducted is namely-
• Positive material identification test
• Hardness test
• Flattening test
• Flaring test
• Intergranular corrosion test
• Chemical test
• Mechanical test
• Pitting resistance test
• Micro test
• Macro test
Product certifications-
The test certifications are also provided by us in order to prove that no Stainless steel 904L Flanges are provided that could be filled up of impure elements. To proves the purity of flanges we are providing TC like-
• Mill test certifications in accordance with EN 10204/3.1b
• 100% radiography test report
• Buyers report
• Third party Inspection report
• Raw material certificate
Documents offered -
We too are providing essential documents to our buyers just to give them a surety that full fairness is maintained in dealing and excel the quality of flanges are provided. Documents like QAP, heat treatment chart, packaging list, guarantee letter, material traceability report, NABL approved lab test report, etc are provided to the buyers.
316 stainless steel has higher chromium and nickel content than 904L stainless steel. This gives 316 better corrosion resistance, especially in chloride-exposed environments. It also has lower carbon content, making it less prone to sensitization and weld decay. However, 904L stainless steel has higher molybdenum content than 316, making it more resistant to pitting and crevice corrosion in certain corrosive environments. Additionally, the low carbon content of 904L makes it easier to weld than 316.
The price of 904L stainless steel depends on factors such as the size, grade, and quantity. In general, prices range from $7 to $20 per pound. However, please note that the price can fluctuate significantly over time and may differ based on the region and specific market conditions.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN | BS | KS | AFNOR |
| SS 904L | 1.4539 | N08904 | SUS904L | X1NiCrMoCu25-20-5 | 904S13 | STS 317J5L | Z2 NCDU 25-20 |
Pipe Specification : ASTM A182 / ASME SA182
Dimension Standard : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2" (15 NB) to 48" (1200NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN Flanges : DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
JIS Flanges : JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K
BS Flanges : BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.
| 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 |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
The full identification of the flanges should be continuously marked down its whole length, including :

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ASME Flanges, DIN Flanges, ANSI Flanges With Mill And Third Party Test Certificate.
Stainless Steel 904L Flanges Price List
Request the latest Stainless Steel 904L Flanges Price List. Please Call +91 22 23867540 or Send an Email to [email protected] for Stainless Steel UNS N08904, 1.4539, SUS 904L Pipe Flanges Ready stock information and updated price list.