Incoloy 840 / UNS S33400

Incoloy 840 has the characteristics of high mechanical strength, high thermal efficiency, safety and reliability, easy installation and long service life. used in the manufacture of industrial accessories such as hot runner heating coils, heating rods, heating tubes, thermocouples, temperature control boxes, temperature control accessories and connectors.

Incoloy 840 Nickel-based alloy Description:

Incoloy 840 Nickel-based alloys typically contain 18-20% Cr and 19-21% nickel in alloys. Incoloy 840 alloy is an austenitic stainless steel containing titanium and aluminum that contains enough chromium to form and maintain chromium oxide on a sufficient scale to protect it under high temperature conditions and is more resistant to high temperatures than traditional chrome-nickel stainless steels such as 304; The higher nickel content gives it better oxidation resistance than standard type 18-8 stainless, and its oxidation resistance is no less than that of higher grade alloys used at temperatures up to 1900 degrees Fahrenheit (1038 degrees Celsius). Incoloy 840 alloy is therefore an ideal material for the manufacture of electric heat pipes, automotive emission control systems and other high temperature resistant products.

Chemical Composition:

C≤	Si≤	Mn≤	P≤	S≤	Cr≥	Ni≥	Mo≥	Cu≤
0.08	1	1	0.04	0.03	18.0-20.0	19.0-21.0	–	–
Other	N≤	Al≤	Ti≤	Fe≤	Co≤	V≤	W≤	Nb≤
Other	–	–	0.15-0.60	Bal.	–	–	–	–

Incoloy 840 Heat conductivity of nickel-based alloy:

°F	°C	Btu·in/h·ft2·°F	W/m·K
68-132	20-56	90	12.9
68-204	20-96	93.6	13.5
68-333	20-167	104.4	15
68-465	20-241	114	16.3
68-590	20-310	122.4	17.6
68-726	20-385	133.2	19.2
68-848	20-453	145.2	20.9
68-972	20-522	156	22.4
68-1101	20-594	168	24.1
68-1198	20-648	181.2	26

Incoloy 840 Nickel-based alloy Physical properties:

1. Incoloy 840 Nickel-based alloy elastic modulus: 29× 106PSI (200 GPA)

2. Incoloy 840 nickel base alloy density: 0.29 lb/in3 (8.03 g/cm3)

Incoloy 840 Nickel-based alloy application range:

Due to its formability, weldability, corrosion resistance and oxidation resistance, Incoloy 840 is a common material for electric heat pipes, used in the manufacture of electric heat pipes, heat exchangers, equipment heaters, industrial heating furnaces and other equipment, and is also commonly used in automotive exhaust systems.

Incoloy840 nickel-based alloy variety specifications and supply status:

1. Variety classification: It can produce various specifications of Incoloy840 seamless pipe, Incoloy840 steel plate, Incoloy840 round steel, Incoloy840 forgings, Incoloy840 flange, Incoloy840 ring, Incoloy840 welded pipe, Incoloy840 steel belt and Incoloy 840 wire and welding materials.

2. delivery status: seamless pipe: solid solution + acid white, the length can be measured; Plate: solid solution, pickling, trimming; Welded pipe: solid solution acid white +RT% flaw detection, forging: annealing + turning; The bar is in forged rolled condition, the surface is polished or polished; The strip is delivered by cold rolling, solid solution soft state and deoxidized skin. The silk material is delivered in solid solution pickling dish or straight strip, solid solution straight strip fine polished state.