904L Flanges are made up of a corrosion resistant and strong nickel chromium alloy that has 58% nickel and 20% chromium in the composition with carbon, manganese, silicon, sulfur, copper and iron. Navstar Steel is a leading supplier and manufacturer of the 904L Flanges in different scales and types.
The flange material has very high tensile strength of 930MPa and minimum yield strength of 517MPa. This strong material also has 1350 degrees Celsius melting point. This makes the flanges be applied in some of the tough and stressful applications.There are different types of flanges such as the Alloy 625 Slip On Flange and others. All these types belong to the specifications ASTM B564 for nickel alloy, Inconel, monel and hastelloy falnges.
The sizes range from ½ inches to 60 inches depending on the type of the flanges. The UNS N06625 BLRF Flange is one of a kind that has a blind and raised face. The blind flanges are used to terminate a connection. They come with a raised face when extra surface for welding or bolting is necessary. The flanges can come under the ANSI, ASME B16.5, B16.47 and other standards.
Inconel is a nickel and chromium based alloy that is used to manufacture different products. 904L Flanges is one such flange that is produced as per grade 625. They can be used in a wide range of temperatures from cryogenic to temperatures as high as 1800 degrees C. Inconel Flanges manufacturers recommend these flanges due to the excellent fabricability and tensile strength offered by them. The stiffening effect of these Inconel Flanges provides strength to these lap joint flanges. These Alloy 625 Flanges do not require to be treated for precipitation hardening.
904L Flanges Pressure Rating varies as per the class and temperature. They are always supplied in annealed conditions. Uns N06625 Slip On Flange offers resistance to carburization and oxidation. These properties of Nickel Alloy 625 Weld Neck Flange make them ideal for use in marine environments. They can also avoid local corrosion such as pitting and crevice. Astm B564 Uns N06625 Pipe Flange also offers high yield and corrosion fatigue strength.
| UNS No. | N08904 |
|---|---|
| Standards | 904L Fittings, Flanges & Fastners |
| Fitting Size | 1/2"NB to 36"NB |
| Fitting Thickness | SCH55, SCH10S, SCH40S, SCH50S, SCH100S, SCH120S, SCH5, SCH10, SCH40, SCH80, SCH100, SCH120, SCH160, SCH140, SCH160, SCH XXS |
| Type | Seamless/Welded/Fabricated |
| Flange Size | 1/2"NB to 36"NB |
| Flange Class | 150#, 300#, 900#, 600#, 1500# |
| Flange Type | Weld neck, Slip on, Blind, Socket weld, (WNRF, BLRF, SORF, SOFF) |
| Fasteners Size | M3 to M80, 1/8" to 70", Custom size |
| Fasteners Length | 3mm to 300mm |
| Bolt Type | Hex head bolts, Square Bolts, T Bolts, U8 Bolts, Dome Bolt, etc |
| Screw Type | Hex head Screw, Socket head Screw, Socket set Screw, etc |
| Studs Types | Double Ended Studs, Threaded Rod, Tie Bars, etc |
| Washer Types | Plain Washers, Lock Washers, Star Washer, etc |
| Nut Types | Hex Nut, Lock Nut, Dome Nut, Square Nut, Coupling Nut, etc |
| GRADE | Werks Toff | UNS | Ni | Cr | Co | Mo | Fe | Cu | Nb | Al | Ti | C | S | Si | Mn | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 904L | 1.4539 | N08904 | 23.0 - 28.0 | 19.0 - 23.0 | - | 4.0 - 5.0 | Bal | 1.0 - 2.0 | - | - | - | 0.02 Max | 0.035 Max | 1.0 Max | 2.00 Max | P - 0.045 Max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|---|
| 904L | 490 | 220 | 35 | 7.95 |
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