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[China]
Address: Room 1703, 17th Floor, Building 5, Jinyin Modern City, Guangdian South Road, Jinshui District, Zhengzhou City, Henan Province, China.
Contact name:Vicky
Zhengzhou Huitong Pipeline Equipment Co.,Ltd. |
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Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. This nickel steel alloy’s chemical composition is designed to provide exceptional resistance to many corrosive environments. It is similar to alloy 800 but has improved resistance to aqueous corrosion. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack such as pitting and crevice corrosion. Alloy 825 is especially resistant to sulfuric and phosphoric acids. This nickel steel alloy is used for chemical processing, pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment.
In what forms is Incoloy 825 available at HT PIPE?
· Sheet
· Plate
· Bar
· Pipe & Tube (welded & seamless)
· Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
· Weld Wire (AWS Classification: ERNiFeCr-1 y ENiCrMo-3)
· Wire
What are the characteristics of Incoloy 825?
· Excellent resistance to reducing and oxidizing acids
· Good resistance to stress-corrosion cracking
· Satisfactory resistance to localized attack like pitting and crevice corrosion
· Very resistant to sulfuric and phosphoric acids
· Good mechanical properties at both room and elevated temperatures up to approximately 1000°F
· Permission for pressure-vessel use at wall temperatures up to 800°F
Alloy 825 (UNS N08825) Chemical Composition, %
| Ni | Fe | Cr | Mb | Cu | Ti | C | Mn | S | Si | Al |
| 38.0-46.0 | 22.0 min | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | .6-1.2 | 0.05 max | 1.0 max | 0.03 max | 0.5 max | 0.2 max |
Corrosion Resistance
Alloy 825 has a high level of corrosion resistance. It resists general corrosion, pitting, crevice corrosion, intergranular corrosion, and stress-corrosion cracking in both reducing and oxidizing environments.
In what applications is Incoloy 825 used?
· Chemical Processing
· Pollution-control
· Oil and gas well piping
· Nuclear fuel reprocessing
· Components in Pickling equipment like heating coils, tanks, baskets and chains
· Acid production
ASTM Specifications
| Pipe Smls | Pipe Welded | Tube Smls | Tube Welded | Sheet/Plate | Bar | Forging | Fitting |
| B423 | B424 | B425 | B564 | B366, B564 |
Difference between black steel bars and bright steel bars
BLACK STEEL BARS
Black Steel Bars are produced in a rolling mill by heating raw
material such as billet, blooms, etc at a temperature around 1200 C
through a number of rolls to achieve the desired shape and size.
Some of the shapes are rounds, hexagons, flats, bars, etc. Due to
the nature of the process and temperatures involved, precise
control of tolerances that can be achieved in bright bars cannot be
achieved in black steel bars. Therefore they are further processed
to make steel bright bars for processes that require more precise
accuracies. Therefore black steel bars are less expensive than
bright bars.
BRIGHT STEEL BARS
Bright Steel Bars are produced from black bars by passing through
dies in a cold condition or by turning the bars in a peeling
machine and some other processes. They are used where specific
tolerance are required such as for use in CNC machines, etc. Some
times heat treatment such as annealing is done before cold
finishing.
