Nickel-based super alloy: Incoloy 801 (UNS N08801) & 802 (UNS N08802)

What is Incoloy 801 & 802?

  • Incoloy 801: UNS N08801, also known as “Alloy 801”;
  • Incoloy 802: UNS N08802, “Alloy 802”.

Very similar to Incoloy 800, both Incoloy 801 and Incoloy 802 are iron-nickel-chromium alloys. Incoloy 801 has increased titanium additions raising the tensile and rupture strength dramatically and it has exceptional resistance to polythionic acid cracking.

N08801 stainless steel is a superaustenitic (highly alloyed) stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. N08801 is the UNS number for this material. Alloy 801 is the common industry name.
It has a moderately low base cost among wrought superaustenitic stainless steels. In addition, it has a fairly high tensile strength and a moderately low ductility.
The graph bars on the material properties cards below compare N08801 stainless steel to: wrought superaustenitic stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it’s 50% of the highest, and so on.
Incoloy 802 offers competitive high-temperature strength capabilities because of its high carbon level and has been used extensively in sinter deck plate applications for handling abrasive, high-temperature environments. Yaang mainly supplies Incoloy 801 & 802 in the form of flange.


Chemical Composition of Incoloy 801 (UNS N08801) & 802 (UNS N08802)

Element Incoloy 801, % Incoloy 802, %
Nickel ≥32 ≥32
Chromium ≥20.5 ≥21
Iron Balance Balance
Carbon ≤0.05 ≤0.35
Aluminum ≥0.60
Titanium ≥1.10 ≥0.70
Copper ≥0.15

Physical Properties of Incoloy 801 (UNS N08801) & 802 (UNS N08802)

Density Melting Range Specific Heat Elastic Modulus
g/cm3 °C J/kg. k Gpa
8.0 1372-1400 485 200

Mechanical Properties of Incoloy 801 (UNS N08801) & 802 (UNS N08802)

Tensile Strength, min. Yield Strength, min. Elongation, min. Reduction in Area, min.
Mpa Mpa % %
1160 1035 15 53

*Incoloy 801 and Incoloy 802 flanges should be furnished in the conditions of oil quenched, fine grained and tempered at 426°C.

Source: China Incoloy 801 Flanges Manufcturer – Yaang Pipe Industry (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@steeljrv.com

Please notice that you might be interested in the other technical articles we’ve published:

Summary
nickel based super alloy incoloy 801 uns n08801 802 uns n08802 - Nickel-based super alloy: Incoloy 801 (UNS N08801) & 802 (UNS N08802)
Article Name
Nickel-based super alloy: Incoloy 801 (UNS N08801) & 802 (UNS N08802)
Description
Very similar to Incoloy 800, both Incoloy 801 and Incoloy 802 are iron-nickel-chromium alloys. Incoloy 801 has increased titanium additions raising the tensile and rupture strength dramatically and it has exceptional resistance to polythionic acid cracking.
Author
Publisher Name
www.steeljrv.com
Publisher Logo

Related News

  • * 暂无相关文章
العربيةБългарски简体中文繁體中文DanskNederlandsEnglishFrançaisDeutschBahasa IndonesiaItaliano日本語한국어LatinPortuguêsРусскийEspañolதமிழ்ไทยTürkçe