Corrosion Resistance Alloy (Incoloy 825)

• Product Type: Wire
• Material: Ni Cr
• Condition: Bright, Annealed
• Transport Package: Wooden Case
• Trademark: Ualloy
• Origin: China
• Model NO.: Incoloy 825
• HS Code: 75062000
• Production Capacity: 500 Tons/Year

Product Description

Corrosion resistance alloy (Incoloy 825 )
1.Description
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.

Incoloy 825

2.Chemical composition

Alloy	%	Ni	Cr	Fe	C	Mn	Si	Cu	Mo	Al	Ti	P	S
825	Min.	38	19.5	balance				1.5	2.5	1.0	0.6
	Max.	46	23.5	balance	0.05	1	0.5	3	3.5	0.2	1.2	0.02	0.03

3.Physical properties

Density	8.1 g/cm³
Melting point	1370-1400°C

4.Minimum mechanical properties in the room temperature

Alloy state	Tensile strength Rm N/mm²	Yield strength R P0. 2N/mm²	Elongation A 5 %	Brinell hardness HB
825	550	220	30	≤200

 
5.Characteristic as below
1. Good stress corrosion cracking resistance performance
2. Good resistance for pitting and crevice corrosion performance
3. Good anti-oxidation and non-oxidzing heat acid performance
4. Good mechanical performance in both room temperature and up to 550°C
5. Have the pressure vessel authenticate when manufacture temperature up to 450°C
 
6.Corrosion resistance
825 is an all-purpose project alloy, have good corrosion resistance of the acid and alkali metal property in both oxidation and reduction environments. High nickel content made it with effective stress corrosion cracking resistance performance. 825 have excellent corrosion resistance in different kinds of media, such as sulfuric acid, phosphoric acid, nitric acid and organic acid, alkali metal such as sodium hydroxide, potassium hydroxide, and hydrochloric acid. A variety of media corrosion of nuclear-burning dissolver show 825 high integrated prpperty, like sulfuric acid, nitric acid and potassium hydroxide are all dealing in a same device.
 
7.Application field
825widely use in many kinds of industry field that the working temperature no more than 550°C.
 
8.Typical application field
1. Sulfuric acid factory usage for heating pipe, container, basket, chain and so on.
2. Cooling heat exchanger, marine product pipeline system and gas pipeline of acidic environment.
3. Heat exchanger, steam machine, washing, impregnation pipe, etc. for phosphoric acid produce 
4. Oil refining in the air heat exchanger
5. Food project
6. Chemical process
7. Application of high pressure oxygen flam-retardant alloy