UNS N04401

HuaNickel UNS N04401 is a nickel-copper alloy with good corrosion resistance. UNS N04401 alloy is widely used in highly corrosion-resistant environments such as electrical equipment, electronic components, and other industrial applications. Due to its low magnetic properties and good electrical conductivity, UNS N04401 is particularly suitable for applications such as precision circuit boards and wire winding.

UNS N04401Chemical composition：

	Cu	Ni	C	Mn	Fe	Co	S	Si
Min	Bal	40
Max		45	0.1	2.25	0.75	0.25	0.015	0.25

UNS N04401Physical properties：

Density（g/cm3）		8.91
Resistivity(μΩ･cm)		0.498
Thermal conductivity(W/m･K)		21.0
Coefficient of thermal expansion	-196°-21°C	7.0
	21-93°C	9.2
	21-816°C	9.8
	21-1093°C	10.6

UNS N04401Mechanical properties：

Yield strength MPa     ksi	Elongation %	Tensile strength MPa       ksi
134     19.5	51	441        64

UNS N04401Alloy properties：

Oxidation resistance: HuaNickel UNS N04401 alloy is a superalloy with high oxidation resistance and high temperature creep strength.

Corrosion resistance: Monl401 alloy has excellent corrosion resistance and can resist the corrosion of seawater, chloride, sulfuric acid and other corrosive media. Therefore, it is widely used in corrosive media in marine engineering, chemical industry, petroleum and other fields. High temperature strength: UNS N04401 alloy has good strength and heat resistance at high temperatures, and can maintain its mechanical properties and structural stability. As a result, it is suitable for installations, pipes, and parts in high-temperature environments, such as oil refining units and furnaces.

Stability: It can maintain stable performance in high temperature environment, and has good machinability and weldability.

Wear resistance: UNS N04401 alloy has high hardness and wear resistance, can resist wear and wear, and can be used for working conditions with large wear.

Weldability: UNS N04401 alloy has good weldability and is easy to weld. This makes it more convenient and flexible in the manufacturing and maintenance process.

UNS N04401Uses of alloys：

Monl401 is widely used in aerospace, petrochemical, nuclear industry, electrical and electronics industry, and deep-sea water use equipment.

In the petrochemical industry, HuaNickel UNS N04401 alloy is used in the manufacture of seamless water pipes, steam pipes, seawater exchangers and evaporators, as well as applications in sulfuric acid and hydrochloric acid environments.

UNS N04401 alloy is primarily used in wirewound precision resistors and bimetallic contactors for electrical and electronic applications. It has a very low temperature coefficient of resistance and medium-range resistivity and is suitable for these specific applications.

UNS N04401 alloy is also used in the manufacture of pump shafts and propellers for equipment used in deep seawater, which is required to operate in extreme environments.

UNS N04401Process performance：

Welding process: HuaNickel UNS N04401 alloy can be joined by a variety of welding methods. During the welding process, ensure that the connection parts are clean and select the appropriate welding materials and welding parameters.

Cutting: Use high-speed steel or carbide cutters for cutting.

Heat treatment process: including quenching and tempering. Quenching is achieved by rapid cooling to achieve high strength, while tempering is done by restoring or improving the plasticity of the material through proper heating. Alloy 401 also needs to be heat treated after welding to maintain high plasticity and toughness. During heat treatment, the annealing temperature has a significant effect on the metallographic structure, so it is necessary to precisely control the annealing temperature to achieve the best results.

Relevant standards：

Bars, bars, wires, forgingsASTM B163/ASME SB163、DIN 17471

Plates, sheets, stripsASTM B127/ASME SB127、DIN 17750

tubeASTM B163/ASME SB163、ASTM B725/ASME SB725、ASTM B775/ASME SB775、ASTM B751/ASME SB751、DIN17751

ASTM B366/ASME SB366、DIN 17743