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Home >>> N08825 Stock

 
  Ni & Ni-based Alloy Stock
UNS NO. Original Country Thickness Width Quantity
UNS N08825 Europe/U.S.A
Japan
0.08~0.6mm 12~660mm 8 Tons
UNS N08825 Europe/U.S.A
Japan
0.45~5.0mm 500/1000/1219mm 45 Tons
UNS N08825 Europe/U.S.A
Japan
4.0~35mm 1500/2000/2350mm 32 Tons
We have the Plate/Sheet Stock as following.
If you have the requirement,please send me the inquiry.

Alloy 825 (UNS N08825),W.Nr. 2.4858,Incoloy 825 Stock

Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum and copper. 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.

UNS N08825 Chemical Composition, Weight%
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 0.6-1.2 0.05 max 1.0max 0.03 max 0.5 max 0.2 max

Standards:
ASTM.......................... B 424
ASME.......................... SB 424

General Properties:
Alloy 825 (UNS N08825) is an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. It was developed to provide exceptional resistance to numerous corrosive environments, both oxidizing and reducing.
The nickel content of Alloy 825 makes it resistant to chloride stress-corrosion cracking, and combined with molybdenum and copper, provides substantially improved corrosion resistance in reducing environments when compared to conventional austenitic stainless steels. The chromium and molybdenum content of Alloy 825 provides resistance to chloride pitting, as well as resistance to a variety of oxidizing atmospheres. The addition of titanium stabilizes the alloy against sensitization in the as-welded condition. This stabilization makes Alloy 825 resistant to intergranular attack after exposure in the temperature range which would typically sensitize un-stabilized stainless steels.
Alloy 825 has good mechanical properties from cryogenic temperatures to moderately high temperatures. However, exposure to temperatures above 1000° F can result in microstructural changes that significantly lower ductility and impact strength. Alloy 825 should not be used at temperatures where creep-rupture properties are design factors.
Alloy 825 has good mechanical properties from cryogenic to moderately high temperatures. Exposure to temperatures above 1000F (540C) can result in changes to the microstructure that will significantly lower ductility and impact strength. For that reason, Alloy 825 should not be utilized at temperatures where creep-rupture properties are design factors. The alloy can be strengthened substantially by cold work. Alloy 825 has good impact strength at room temperature, and retains it's strength at cryogenic temperatures.
Alloy 825 is resistant to corrosion in a wide variety of process environments including sulfuric, sulfurous, phosphoric, nitric, hydrofluoric and organic acids and alkalis such as sodium or potassium hydroxide, and acidic chloride solutions.

Corrosion Resistance:
An Nickel-Iron-Chromium Alloy--N08825 was Developed for Exceptional Corrosion Resistance Both In Oxidizing and Reducing Environments.
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.The most outstanding attribute of Alloy 825 is its excellent corrosion resistance. In both oxidizing and reducing environments, the alloy resists general corrosion, pitting, crevice corrosion, intergranular corrosion and chloride stress-corrosion cracking.
--Stress-Corrosion Cracking Resistance
The high nickel content of Alloy 825 provides superb resistance to chloride stress-corrosion cracking. However, in the extremely severe boiling magnesium chloride test, the alloy will crack after long exposure in a percentage of samples. Alloy 825 performs much better in less severe laboratory tests. The following table summarizes the alloy's performance.
--Pitting Resistance
The chromium and molybdenum content of Alloy 825 provides a high level of resistance to chloride pitting. For this reason the alloy can be utilized in high chloride environments such as seawater. It can be used primarily in applications where some pitting can be tolerated. It is superior to conventional stainless steels such as 316L, however, in seawater applications Alloy 825 does not provide the same levels of resistance as SSC-6MO (UNS N08367) or Alloy 625 (UNS N06625).

Applications:

Air Pollution Control
Scrubbers
Chemical Processing Equipment
Acids
Alkalis
Food Process Equipment
Nuclear
Fuel Reprocessing
Fuel Element Dissolvers
Waste Handling

Offshore Oil and Gas Production
Seawater Heat Exchangers
Piping Systems
Sour Gas Components
Ore Processing
Copper Refining Equipment
Petroleum Refining
Air-cooled Heat Exchangers
Steel Pickling Equipment

 

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