Nickle Alloy Flat Welding Flange Incoloy 800 Power Station Boiler Pressure Vessel
Nickle Alloy Flange, also known as a flange rim or flange, is a part that connects pipes to each other at the ends, and it is also used on equipment inlets and outlets for connecting two pieces of equipment, such as a reducer flange. A flange connection or flange joint refers to a detachable connection consisting of a flange, gasket, and bolt, which together form a combined sealing structure.
Classification Method:
- According to the chemical industry (HG) standard: Integral Flange (IF), Threaded Flange (Th), Plate Welding Flange (PL), Weld-Neck Flange (WN), Socket Welding Flange (SW), Sleeve Welding Flange (SO), Butt Welding Ring Loose Flange (PJ/SE), Plate Welding Ring Loose Flange (PJ/RJ), Lined Flange Cover (BL(S)), Flange Cover (BL).
- According to the petrochemical (SH) standard: Threaded Flange (PT), Weld-Neck Flange (WN), Plate Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), Flange Cover (not specified).
- According to the mechanical (JB) standard: Integral Flange, Weld-Neck Flange, Plate Welding Flange, Weld-Neck Ring Plate Loose Flange, Plate Welding Ring Plate Loose Flange, Flanged Ring Plate Loose Flange, Flange Cover.
- According to the national (GB) standard: Integral Flange, Threaded Flange, Weld-Neck Flange, Necked Plate Welding Flange, Necked Socket Welding Flange, Weld-Neck Ring Necked Loose Flange, Plate Welding Flange, Weld-Neck Ring Plate Loose Flange, Plate Welding Ring Plate Loose Flange, Flanged Ring Plate Loose Flange, Flange Cover.
INCONEL ALLOY 800 (UNS N08800/W. Nr. 1.4876) is a widely used material for construction of equipment requiring corrosion resistance, heat resistance, strength, and stability for service up to 1500°F (816°C). Alloy 800 offers general corrosion resistance to many aqueous media and, by virtue of its content of nickel, resists stress corrosion cracking. At elevated temperatures it offers resistance to oxidation, carburization, and sulfidation along with rupture and creep strength. For applications requiring greater resistance to stress rupture and creep, especially at temperatures above 1500°F (816°C), INCOLOY alloys 800H and 800HT are used. The chromium in the alloy imparts both aqueous and heat resistance. Iron provides resistance to internal oxidation. The nickel content maintains a ductile, austenitic structure. Thus, alloy 800 is readily formed,
welded, and machined.
Typical Applications:
INCOLOY alloy 800 is used in a variety of applications involving exposure to corrosive environments and high temperatures. It is used for heat-treating equipment such as baskets, trays, and fixtures. In chemical and petrochemical processing, the alloy is used for heat exchangers and other piping systems in nitric acid media especially whereresistance to chloride stress-corrosion cracking is required. In nuclear power plants, it is used for steam-generator
tubing. The alloy is often used in domestic appliances for sheathing of electric heating elements. In the production of paper pulp, digester-liquor heaters are often made of alloy 800. In petroleum processing, the alloy is used for heat exchangers that air cool the process stream.
Mechanical Properties:
INCOLOY alloy 800 has high mechanical strength over a broad temperature range. In general, alloy 800 is used for its
strength characteristics at service temperatures up to about 1500°F (816°C). At those temperatures, equipment design is
usually based on tensile properties. For applications that require high creep or rupture strength, INCOLOY alloys 800H and 800HT are used.
Chemical Composition:
| Element | Ni | Cr | Fe | C | Mn | S | Si | Co | Al | Ti |
| Minimum(%) | 30 | 19 | - | 0.1 | 1.5 | 0.015 | 1.0 | 0.75 | 0.15 | 0.15 |
| Max(%) | 35 | 23 | 39.5 | - | - | - | - | - | 0.6 | 0.6 |
Designantion and standards:
National
Standards | Material
designation | Forgings | Rod and
bar | Plate and
sheet | Strip | Wire | Seamless
tube |
| ASTM ASME SAE NACE | Incoloy 800 UNS N08800
| ASTM B 564 | ASTM B 408 | ASTM A 240/A 480 & ASME SA 240/SA 480 | ASTM B 409/B 906 & ASME SB 409/SB 906 | ISO 9724 | ASTM B 163 & ASME SB 163 |
| DIN | 1.4876 | | | | | | |
Thermal Properties:
| Temperature | Electrical
Resistivity | Coefficient of
Expansion | Thermal Conductivity |
| °F | ohm•circ mil/ft | 10-6 in/in/°F | Btu•in/ft2•h•°F |
| 70 | 595 | - | 80 |
| 100 | 600 | - | 83 |
| 200 | 620 | 7.9 | 89 |
| 400 | 657 | 8.8 | 103 |
| 600 | 682 | 9.0 | 115 |
| 800 | 704 | 9.2 | 127 |
| 1000 | 722 | 9.4 | 139 |
| 1200 | 746 | 9.6 | 152 |
| 1400 | 758 | 9.9 | 166 |
| 1600 | 770 | 10.2 | 181 |
| 1800 | 776 | - | 214 |
| 2000 | 788 | - | - |
Processing Flow Chart:
Product Tags:
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7.94g/cm3 Nickel Alloy Flanges Rim Incoloy 800 For Power Station Boiler Pressure Vessel Images
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