|
JIS Standard Incoloy 825 Nickel Based Alloy Coil for Ammonium sulphate vessels
| Material |
Monel/Inconel/Hastelloy/Duplex Steel/PH Steel/Nickel Alloy |
| Shape |
Round,Forging,Ring,Coil,Flange,Disc,Foil,Spherical,Ribbon,Square,Bar,Pipe,Sheet |
| Grade |
Duplex: 2205(UNS S31803/S32205),2507(UNS S32750),UNS S32760(Zeron 100),2304,904L |
| |
Others:253Ma,254SMo,654SMo,F50(UNSS32100)F60,F61,F65,1J22,N4,N6 etc |
| |
Alloy : Alloy 20/28/31 |
| |
Hastelloy:HastelloyB/ -2/B-3/C22/C-4/S/ C276/C-2000/G-35/G-30/X/N/g |
| |
Hastelloy B / UNS N10001,Hastelloy B-2 / UNS N10665 / DIN W. Nr. 2.4617,Hastelloy C,
Hastelloy C-4 / UNS N06455 / DIN W. Nr. 2.4610,Hastelloy C-22 / UNS N06022 / DIN W. Nr. 2.4602,
Hastelloy C-276 / UNS N10276 / DIN W. Nr. 2.4819,Hastelloy X / UNS N06002 / DIN W. Nr. 2.4665 |
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Haynes: Haynes 230/556/188 |
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Inconel 600/601/602CA/617/625/713/718/738/X-750,Carpenter 20 |
| |
Inconel 718 / UNS N07718 / DIN W. Nr. 2.4668,Inconel 601 / UNS N06601 / DIN W. Nr. 2.4851,
Inconel 625 / UNS N06625 / DIN W. Nr. 2.4856,Inconel 725 / UNS N07725,Inconel X-750 / UNS N07750 / DIN W. Nr. 2.4669,Inconel 600 / UNS N06600 / DIN W. Nr. 2.4816 |
| |
Incoloy: Incoloy 800/800H/800HT/825/925/926; |
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GH: GH2132,GH3030,GH3039,GH3128,GH4180,GH3044 |
| |
Monel: Monel 400/K500/R405 |
| |
Nitronic: Nitronic 40/50/60; |
| |
Nimonic: Nimonic 75/80A/90/A263 ; |
Specification |
Wire: 0.01-10mm
Strip: 0.05*5.0-5.0*250mm
Bar: φ4-50mm;Length 2000-5000mm
Pipe: φ6-273mm;δ1-30mm;Length 1000-8000mm
Sheet: δ 0.8-36mm;Width 650-2000mm;Length 800-4500mm |
Product
Characteristics |
1.According to the preparation process can be divided into deformation superalloys, casting superalloys and powder metallurgy superalloys.
2.According to the strengthening mode, there are solid solution strengthening type, precipitation
strengthening type, oxide dispersion strengthening type and fiber strengthening type, etc.. |
| Standard |
GB,AISI,ASTM,DIN,EN,SUS,UNS etc |
| Inspection |
ISO,SGS,BV and so on. |
Application |
High temperature components such as turbine blades, guide vanes, turbine disks, high pressure compressor disks,machine manufacturing and combustion chambers used in the manufacture of aviation, naval and industrial gas turbines |
Packaging |
1. cases packed in wooden cases
2. paper packaging
3. plastic packing
4. foam packaging
Packaging according to customer requirements or products |
| Delivery |
7-25days or According to the product |
| Payment |
L/C,D/A,D/P,T/T,Western Union,MoneyGram,According to customer requirements payments for offline orders. |
Incoloy 825 is highly resistant to corrosion. It has a high nickel content, sufficient to resist chloride ion stress corrosion cracking, and a very stable austenite structure. The levels of molybdenum and copper enable the alloy to resist reducing agents and acids. Chromium gives resistance to oxidising conditions, such as nitric acid solutions, nitrates and oxidising salts. The alloy is titanium stabilised to resist pitting and intergranular attack after fabrication, particularly welding, which includes heating in the critical sensitisation temperature range (650°C - 760°C).
Pressure Vessels
Incoloy 825 is approved for pressure vessel operating temperatures up to 525°C (AS1210, AS4041), 538°C (ASME Boiler & Pressure Vessel Code, Sections I, III, VIII, IX, Cases 1936, N-188). Brittle phases may form in alloy 825 at temperatures above ~ 540°C, so it is not normally used at these temperatures, where creep-rupture properties would be design factors.
Applications of Incoloy 825
Typical Applications of Incoloy Alloy 825 include:
- Sulphuric acid piping and vessels
- Phosphoric acid evaporators
- Pickling tank heaters, pickling tanks and equipment
- Chemical process equipment
- Propellor shafts
- Tank trucks
- Calorifiers
- Electrostatic precipitator electrodes
- Hot vessels for food, water and seawater,
- Ammonium sulphate vessels
- Expansion bellows
- Marine exhaust systems
- Power station ash hoppers
Chemical Composition of Incoloy Alloy 825
Table 1. Chemical composition of Incoloy Alloy 825 (ASTM B163 - Heat exchanger tube)
|
Element |
% |
Element |
% |
|
Nickel |
38.0 - 46.0 |
Carbon |
0.05 max |
|
Chromium |
19.5 - 23.5 |
Manganese |
1.0 max |
|
Molybdenum |
2.5 - 3.5 |
Sulfur |
0.03 max |
|
Copper |
1.5 - 3.0 |
Silicon |
0.5 max |
|
Titanium |
0.6 - 1.2 |
Aluminium |
0.2 max |
|
Iron |
22.0 min (~33%) |
|
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Tensile Properties of Incoloy Alloy 825
Table 2. Typical room temperature tensile properties (not for design. Consult the relevant material or product specification for design values)
|
Form |
Condition |
0.2% Proof Stress
MPa |
Tensile Strength
MPa |
Elong
% |
|
Tube |
Annealed |
440 |
770 |
35 |
|
Tube |
Cold drawn |
880 |
1000 |
15 |
|
Bar |
Annealed |
325 |
690 |
45 |
|
Plate |
Annealed |
340 |
660 |
45 |
|
Sheet |
Annealed |
420 |
760 |
39 |
Figure 1. High temperature tensile properties of annealed Incoloy 825 bar.
Corrosion Resistance
The outstanding property of Incoloy 825 is its corrosion resistance. In reducing & oxidising conditions, Incoloy 825 resists general corrosion, pitting & crevice corrosion, intergranular corrosion and stress corrosion cracking. It is particularly useful in sulphuric & phosphoric acids, sulphur containing flue gases, sour gas and oil wells and sea water.
Fabrication
Incoloy 825 can be readily hot or cold worked. Hot working should be in the range 870 - 1180°C, finishing at 870 - 980°C. For maximum corrosion resistance hot worked parts should be stabilise annealed before use. The alloy is easier to cold form than stainless steels.
ASTM Product Specifications
ASTM specifications for Incoloy Alloy 825.
|
Specification |
Title |
|
B163 |
Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes |
|
B423 |
Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825 and N08221)* Seamless Pipe and Tube |
|
B424 |
Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825 and UNS N08221)* Plate, Sheet, and Strip |
|
B425 |
Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825) |
|
B704 |
Welded UNS N06625 and UNS N08825 Alloy Tubes |
|
B705 |
Nickel-Alloy (UNS N06625 and N08825) Welded Pipe |
|
B751 |
General Requirements for Nickel and Nickel Alloy Welded Tube |
Equivalent Grade Designations
Other international grades that are equivalent to Incoloy Alloy 825.
|
Country |
Body |
Designation |
|
USA |
UNS |
N08825 |
|
France |
AFNOR |
NC 21 FeDU |
|
GB |
BS |
NA 16 |
|
Germany |
DIN |
NiCr21Mo |
|
Germany |
Werkstoff |
Nr 2.4858 |
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