Incoloy 825 Flange

Incoloy 825 flange 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 has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack such as pitting and crevice corrosion. Incoloy 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 Flange Standard

The nickel-iron-chromium alloys are UNS NO8120,UNS NO8800, UNS NO8810, and UNS NO8811. Alloy UNSN08800 is normally employed in service temperatures up to and including 1100°F (593℃). Alloys UNS N08810, N08120,and UNS N0881 1 are normally employed in service temperatures above 1100°F (593℃) where resistance to creep and rupture is required, and are annealed to develop controlled grain size for optimum properties in this temperature range.

Nickel-iron-chromium-tungsten alloy UNS N06674 is normally employed in service temperatures above 1100°F(593℃) where resistance to creep and rupture is required, and is annealed to develop optimum properties in this temperature range.

Dimensions and Permissible Variations

Dimensions and tolerances shall be as specified on theapplicable forging sketch or drawing.

Workmanship, Finish, and Appearance

The material shall be uniform in quality and condition,sound, and free of injurious imperfections.

Sampling

Lot Definition:

A lot for chemical analysis shall consist of one heat.

A lot for mechanical properties and grain size testing shall consist of all material from the same heat, size, finish,condition, and processed at one time.

Test Material Selection:

Chemical Analysis-Representative samples shall betaken during pouring or subsequent processing.

Product(check)analysis shall be wholly the responsibility of the purchaser.

What is the difference between Inconel 825 and Incoloy 825?

Incoloy is a registered trademark of Special Metals Incorporated and is applied to a family of nickel-based alloys primarily alloyed with chromium. There are more than ten different grades currently named within the Incoloy family, but one of the most widely known is Incoloy 825.

Incoloy 825 was brought to the market in 1952, building upon Incoloy 800 to better resist sulphuric acid. For many years it was the default choice of metal for the handling of sulphuric acid. The high nickel content ensures resistance to stress corrosion cracking, and a wider temperature operating range than many stainless steels.

Inconel and Incoloy are two different families of nickel-based alloys originally developed by Special Metals Incorporated (who own the Inconel and Incoloy trademarks). There is no such thing as Inconel 825.

Inconel grades are nickel-based alloys, again primarily alloyed with chromium. However, their nickel content is generally much higher than Incoloy grades, providing improved performance at higher temperatures where they retain more of their strength.

Advantages of Incoloy 825 flange, Nickel Alloy 825, UNS N08825

●Excellent resistance to both reducing and oxidizing acids like sulfuric and phosphoric

●Helps avoid stress-corrosion cracking

●Stops localized attacks such as pitting and crevice corrosion

●High level of resistance to variety of oxidizing substances such as nitric acid, nitrates, and oxidizing salt

Incoloy 825 Flange Material

Incoloy 825 ASTM B564 Flange Specifications material

Specifications	ASTM B564 / ASME SB564
Dimension Standard	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
Standard Size Range	1/2″NB TO 60″NB
Class / Pressure	150#, 300#, 825#, 900#, 1500#, 2500# | PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type	Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Grades	Incoloy 825

Incoloy 825 Flanges Equivalent

STANDARD	UNS	WERKSTOFF NR.	AFNOR	EN	JIS	BS	GOST	OR
Incoloy 825 Flanges	N08825	2.4858	NFE30C20DUM	NiCr21Mo	NCF 825	NA 16	ЭП703	XH38BT

ASTM B564 Incoloy 825 Chemical Table

CHEMICAL	LIMITS	C	Mn	Al	S	Si	Ni	Cr	Mo	Fe	Ti	Cu
Incoloy 825	MIN						38.00	19.50	2.50	22.00	0.600	1.50
	MAX	0.05	1.00	0.200	0.030	0.50	46.00	23.50	3.50		1.200	3.00

Nickel is one of the main components of Incoloy 825 alloy, which gives the alloy good corrosion resistance and high temperature strength. Nickel can form a stable oxide film on the surface of the alloy, preventing the contact between the corrosive medium and the base metal, thereby improving the corrosion resistance of the alloy.

Incoloy 825 Flanges Mechanical Properties

It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to locized attach such as pitting and crevice corrosion.

Incoloy	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
825	8.14 g/cm3	1400 °C (2550 °F)	586Mpa (85 Ksi)	241Mpa (35Ksi)	30%

Inconel vs Stainless Steel: How to choose？

For one thing, Inconel is much more expensive than stainless steel alloys. Inconel also has much better corrosion resistance and strength at high temperatures. However, at lower temperatures, steels like 17-4PH stainless will have a higher strength than Inconel. When deciding between the two different alloys, the main deciding factor is cost, temperature, and strength. If a lower cost, but relatively strong part is required, stainless steel is probably the way to go. If an air-critical component is required with high temperature needs, then Inconel is a much better alloy for that application.

Incoloy 825 VS Inconel 625

In the oil and gas industry, the two most important nickel alloys are Inconel 625 and Incoloy 825 flange. The major difference between two materials is the nickel content value, for Inconel 625 Nickel 58% minimum, and for Incoloy 825 Nickel at range of 38% to 46%. And this makes the 625 material more expensive.

Incoloy 825

It is widely used in chemical, marine engineering, pharmaceutical and other industries. It is often used to manufacture equipment and components such as pipelines, containers, heat exchangers, flanges, etc., and is suitable for working conditions that handle various corrosive media.

Inconel 625

It is mainly used in high-end fields such as aerospace, nuclear energy, offshore oil and gas production, and chemical industry. It is often used to manufacture engine parts, gas turbine blades, deep-sea oil and gas production equipment and other key components that have extremely high material performance requirements.

Corrosion Resistance

Primary corrosive environments where Incoloy flanges are most useful are sulfuric acid, phosphoric acid, sulfur-containing flue gases, sour gas and oil wells, and sea water.

◆ Improved resistance to aqueous corrosion compared to Incoloy 800

◆ Excellent resistance to both reducing and oxidizing acids

◆ Especially resistant to sulfuric and phosphoric acids

◆ Good resistance to chloride stress-corrosion cracking, as well as pitting and crevice corrosion

◆ Good resistance to a variety of oxidizing substances such as nitric acid, nitrates and oxidizing salt

◆ Good resistance to stress-corrosion cracking in neutral chloride media.

You can get an offer for products in below material forms:

-Pipe and Tube (EN 10216-5, ASTM A213, ASTM A249, A312, A790,)

-Forged Fitting and Flange (ASTM A182 , ASTM A105,ASTM B564 )

-Butt Weld Fittings (ASTM A234, ASTM A403,ASTM A815)

-Round bar , Billet (ASTM A276, ASTM A479)

- Plate, Sheet, Strip(ASTM A240, EN 10028-7, A480)

-Bolting, Nuts（ASTM A193, A194, A320）

Incoloy 825 Flange Exported Countries

We Export Incoloy 825 Flange to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan,  Europe, Africa, Asia, North America, South America, Middle East.etc