Incoloy 840、UNS S33400

Incoloy 840 alloy overview:

Incoloy 840 alloy alloys usually have a Cr content of 18-20% and a nickel content of 19-21%. Incoloy 840 alloy is an austenitic stainless steel containing titanium and aluminum. It contains enough chromium to form and maintain a sufficient amount of chromium oxide to protect it under high temperature conditions. It is more resistant to high temperatures than traditional chromium nickel stainless steels such as 304; The higher nickel content makes it have better oxidation resistance than the standard 18-8 stainless steel, and its oxidation resistance is not inferior to the higher grade alloys used at temperatures up to 1900 degrees Fahrenheit (1038 ℃) . Therefore, Incoloy 840 alloy is an ideal material for manufacturing electric heating pipes, automotive emission control systems and other high temperature resistant products.

 

Chemical composition of Incoloy 840 alloy:

C≤	Si≤	Mn≤	P≤	S≤	Cr≥	Ni≥	Ti≤	Fe≤
0.08	1.00	1.00	0.040	0.030	18.0   20.0	19.0   21.0	0.15   0.60	margin

 

Incoloy 840 alloy physical properties:

Modulus of elasticity: 29 × 106PSI (200 GPA)

Density: 0.29 lb / in3 (8.03 g / cm3)

 

Special alloy materials commonly used in the energy industry:

Stainless steel: 254SMO, 654SMO, F44, 2205, 2507, etc.

High-temperature alloy: GH4049

Nickel-based alloys: Alloy 59, Hastelloy B, Inconel 718, Nickel 201, Hastelloy C, etc.

Corrosion-resistant alloys: NS333, NS334