What are the different types of finishes available for Incoloy 825 pipe fittings?
Versatile, resilient, and sturdy, these fittings are in consistent demand by chemical processing plants and petroleum refineries. Incoloy 825 pipe fittings have nickel, iron, chromium, and also molybdenum (2.5 to 3.5%). Manufacturers can provide these components in various finishes per client requirements.
The standard finishes are buff, 2D, 2B, or a protective coat for longer operative life and optimum performance. An 825 Incoloy equal tee can come in brush, satin, hairline, or mirror finish. The pipe fittings have a branch diameter equal to that of the main pipeline, hence called “equal”.
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What are the criteria for passing or failing the tests conducted on Alloy 825 fittings?
Accurate testing of these components is imperative for application safety and performance. Manufacturers examine Alloy 825 fittings via direct-reading spectrography, X-ray detection, ultrasonic tests, and magnetic particle detection. Hydrostatic testing or additional examinations (third-party inspection)may get conducted per client requirements.
These products adhere to exacting quality standards and face dismissal if the chemical composition and mechanical properties criteria don’t get met. Buyers must ask manufacturers to share these details in the Mill Test Certificate, radiography reports, and raw materials certificate.
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Incoloy 825 pipe fittings
Alloy 825 fittings
ASTM B366 UNS N08825 elbow
Are there any challenges associated with the installation or assembly of ASTM B366 UNS N08825 elbow?
These elbows function in heat exchangers, pollution control, and pipelines for oil and gas. Installing them in critical environments can be challenging as even minor defects can prove dangerous. ASTM B366 WPNICMC buttweld fittings get annealed before installation. They are relatively straightforward to install through welding: GMAW or GTAW (gas metal arc or tungsten arc welding).
Installing an ASTM B366 UNS N08825 elbow does not require much tubing preparation, but we still recommend inspecting for corrosion or damage. Applications such as evaporators, scrubbers, and dissolvers need a more careful examination for even minor signs of contamination.
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Table of Content
Incoloy 825 pipe fittings specifications
| Pressure classes | Schedule | Type |
|---|---|---|
| 150 to 2500 | SCH 5 to SCH XXS | Elbow, tee, reducer, cap stub end |
| Standard | Sizes | Temperature |
| ASME B16.9/ ASME B16.28 | ½”NB to 24″NB | 650°C – 760°C |
| Process | Specification | Testing methods |
| Seamless, welded, fabricated | ASTM B366/ ASME SB366 |
|
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Alloy 825 fittings types
Nickel alloy 825 stub end
- Schedule: SCH 5 to SCH XXS
- Tensile strength : 241 Mpa (35Ksi)
Incoloy 825 fittings
- Pressure Rating: 3000psi -10000psi
- Density: 8.14 g/cm3
Alloy 825 tee
- Sizes: ½”NB to 24″NB
- Thickness: 1.5MM to 20MM
825 incoloy equal tee
- Yield strength : 586 Mpa (85 Ksi)
- Temperature: 650°C – 760°C
DIN 2.4858 reducers
- Testing methods: proof test, hydrotest, NDT test, destructive
ASTM B366 WPNICMC buttweld fittings
- Standard: ASME B16.9, ASTM B366, JIS B2312, MSS-SP-43 Type B, ASME B16.28
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ASTM B366 UNS N08825 elbow chemical composition
| Grade | Mn | Si | Fe | C | S | Cr | Cu | Ti | |
|---|---|---|---|---|---|---|---|---|---|
| 825 | minimum | – | – | 22.0 | – | – | 19.5 | 1.5 | 0.6 |
| maximum | 1.0 | 0.5 | – | 0.05 | 0.015 | 23.5 | 3.0 | 1.2 | |
Nickel alloy 825 stub end mechanical properties
| Grade | Tensile Strength (MPa) minimum | Yield Strength 0.2% Proof (MPa) minimum | Elongation (% in 50mm) minimum | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 825 | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa -220 | 30 | – | – |
Incoloy 825 fittings equivalent
| Grade | Old British | UNS No | Euronorm | GOST | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | AFNOR | ||||
| Incoloy 825 | NA 16 | NiCr21Mo | N08825 | 2.4858 | NFE30C20DUM | ЭП703 | NCF 825 |
What are the various types and sizes of inconel 600 Nickel alloy 825 stub end ?
These fittings are of many types, but lap joint, short, and long stub ends are the most widely used. The sizes for these products range from 1/8 to 2 inches. For a nickel alloy 825 stub end, the dimensions are the long length and short length – generally in inches.
Buyers can acquire these performance-oriented fittings in sizes of 3 to 10 inches. Sizing from 2 to 6 inches is the most popular across key industries. In turn, the lap diameter can be from 0.5 to 12 inches. While ordering, customers also need to mention the nominal pipe schedule (NPS), a non-dimensional number corresponding to the size.
What are the factors to consider when selecting the appropriate pressure class for Incoloy 825 fittings?
High-pressure tolerance is among the many valuable strengths of this material. It shows an ultimate tensile strength of 585 MPa. Incoloy 825 fittings can comfortably withstand pressures of 3000 to 10,000 psi.
The pressure class will depend on the temperature and the material. You can purchase DIN 2.4858 reducers in classes 150 to 2500. When selecting the desired rating, we recommend closely assessing the atmospheric conditions (temperature, pressure, etc.) and the media (fluid, gas, etc.) in the piping.
What are the typical difficulties faced by Alloy 825 tee producers?
High strength and toughness are hallmarks of this material. An Alloy 825 tee is quite heat resistant. It does not undergo phase changes while heating, constraining the possibility of refinement via standard heat treatment. Producers may also find it challenging to machine these fittings as conventional techniques may prove inadequate.
Strict tolerance and exacting quality control are essential during the production of these fittings. Integrated inspection at each step ensures they fulfil the criteria for chemical properties and endure corrosive agents, like reducing and oxidising acids.
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