Nickel and nickel alloys · Alloy 405 / UNS N04405 / 2.4360

Alloy 405 (UNS N04405): Engineering Reference Guide on Properties and Applications

Engineering Parameters of Alloy 405

Alloy 405 is a specialized modification of the nickel-copper alloy Monel 400, alloyed with sulfur. This alloying purposefully improves machinability on automated machine lines, giving the material the properties of free-machining steel. EV Group China supplies this alloy for the production of precision components where a combination of high corrosion resistance and excellent chip control during machining is critically important.

Chemical Composition of Alloy 405 in Mass Fractions (%)

The presence of sulfur in the Alloy 405 matrix initiates the formation of fine-dispersed sulfide inclusions. These inclusions act as stress concentrators, promoting the formation of short and brittle chips, which significantly facilitates their removal during high-speed machining. At the same time, the alloy's inherent high resistance to corrosion in chemically active environments is maintained.

Mechanical Properties of Alloy 405

The mechanical properties of Alloy 405 are determined by the heat treatment regime and the degree of cold plastic deformation. EV Group China engineers select the optimal supply condition (annealed, cold-drawn) to precisely match the design requirements for yield strength, tensile strength, and hardness of the finished product.

Physical Properties and Constants

The nominal density of Alloy 405 is 8.8 g/cm³. A key advantage is the stability of its physical and mechanical properties over a wide temperature range, which determines its use in the production of critical equipment for the chemical industry and high-load fasteners for offshore platforms and shipbuilding.