INCOLOY 20/UNS N08020

Incoloy 20 alloy is a kind of molybdenum and copper nickel base alloy,has the very good thermal and cold working properties of corrosion resistant alloy, the oxidation and secondary reducing erosion has good resistance, excellent resistance to stress corrosion cracking ability and good resistance to local corrosion ability in many chemical process medium has satisfactory corrosion resistant properties.

Product Description:

The Cr content in Alloy 20 (N08020) nickel-based alloys is typically 19.0-21.0% and the nickel content is 32.0-38.0%. Alloy 20(Incoloy 20) is a nickel-based alloy containing molybdenum and copper with excellent hot and cold working properties. Alloy 20 (N08020) Nickel-based alloy is a corrosion resistant alloy with many excellent properties, good resistance to oxidizing and medium reducing corrosion, excellent stress corrosion cracking resistance and good local corrosion resistance in many chemical process media have satisfactory corrosion resistance.

Alloy 20 (N08020) Nickel Base alloy Chemical composition of nickel base alloy:

C≤	Si≤	Mn≤	P≤	S≤	Cr≥	Ni≥	Mo≥	Cu≤
0.07	1	2	0.045	0.035	19.0-21.0	32.0-38.0	2.0-3.0	3.0-4.0
Other	N≤	Al≤	Ti≤	Fe≤	Co≤	V≤	W≤	Nb+Ta
Other				Bal.				≤1.00

Alloy 20 (N08020) Physical properties of nickel-based alloy:

Density	8.08 g/cm3
Fusing point	1357-1430℃

Alloy 20 (N08020) Mechanical properties:

Tensile Strength σb/MPa	Yield Strength σs0.2/MPa	Elongation
≥ 620	≥ 300	≥ 40

Alloy 20 (N08020) Nickel-based alloy phase structure:

Alloy 20 (N08020) nickel-based alloy was treated at 1120℃ for 2h, and only TiN nitride and Cr7C3 carbides were found in the structure. After long-term aging at 870℃ and 1500℃, Cr7C3 and TiN remained in the structure, indicating that the alloy’s structure was stable.

Alloy 20 (N08020) Nickel-based alloy Process properties and requirements:

1.Alloy 20 (N08020) nickel-based alloy has good thermal processing properties, ingot forging heating temperature 1110℃ ~ 1140℃. The average grain size of the alloy is closely related to the deformation degree of the forging and the final forging temperature.

2.Alloy 20 (N08020) nickel-based alloy has good weldability and can be connected by various methods such as primary arc welding, argon arc welding, resistance welding and brazing. Large or complex welded structural parts should be annealed at 870℃ for 1h after solution welding to eliminate welding stress.

3.Alloy 20 (N08020) nickel-based alloy must be machined after heat treatment, due to the work hardening of the material, it is appropriate to use a lower cutting speed and heavy feed than the processing of low-alloy standard austenitic stainless steel, in order to drive into the cold hardening of the surface.

Specifications and availability of Alloy 20 (N08020) Nickel-based alloys:

1.Variety classification: Alloy 20 seamless pipe, Alloy 20 steel plate, Alloy 20 round steel, Alloy 20 forgings, Alloy 20 flange, Alloy 20 ring, Alloy 20 welded pipe, Alloy 20 steel strip, Alloy 20 wire and Alloy 20 Supporting 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.

Product Form: