Bright Finish Incoloy 825 Nickel Based Alloy Rod for Phosphoric Acid Evaporators

• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, ASTM, AISI
• Purity: 38%
• Alloy: Alloy
• Type: Nickel Bar
• Powder: Not Powder
• Model NO.: Incoloy 825
• Diameter: 3-300mm
• Surface: Black, Bright, Polished, Pickling
• Length: as Your Requirments
• MOQ: 100kgs
• Sample: Free-Sample
• Condition: Annealed;Heat Treatment
• Technique: Cold Rolled, Hot Rolled
• Mtc: Cold Drawn Hot Rolled, Forged
• Stock: in Stock
• T.S.(≥ MPa): 660
• Key Words: 825 Nickel Alloy Bar
• Transport Package: Wooden Package
• Specification: Incoloy 825
• Trademark: ZYTC
• Origin: China
• HS Code: 7502200000
• Production Capacity: 50000kg/Month

Product Description

EN 10095 Standard Bright Finish Incoloy 825 Nickel Based Alloy Rod for Phosphoric acid evaporators

 

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%)

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

Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .

Q2: Can I have free sample before making orders?

A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.

Q3: How do you control the quality ?
A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .

Q4: How about your delivery time ?
A4: Generally delivery time is 15 working days .

Q5: How can I quickly get the price list ?
A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .