Monel 400 Machinability

Standard machining methods utilized for iron based alloys might be utilized. Monel 400 Alloy works harden during machining and has higher strength and "gumminess" not typical of steels.

Heavy duty machining equipment as well as tooling should be utilized to minimize chatter or work-hardening of the alloy in front of the cutting. Most any business coolant might be utilized as a part of the machining operations. Water-base coolants are favored for high speed operations, for example, turning, grinding or milling. Heavy lubricants work best for tapping, drilling, broaching or boring. Turning: Carbide tool is recommended for turning with a nonstop cut. High speed steel tools should be utilized for interfering with slices and for smooth completing to close resilience. Tools should have a positive rake angle. Cutting speeds and feeds are in the accompanying reaches: For High-Speed Steel Tools For Carbide Tooling Depth Surface Feed Depth Surface Feed of cut pace in inches of cut rate in inches feet/min. per rev. Inches, feet/min. per rev. 0.250" 60-70 0.030 0.250" 250-300 0.020 0.050" 90-100 0.010 0.050" 300-350 0.008 Drilling: Steady sustain rates must be utilized to maintain a strategic distance from work hard because of harping of the drill on the metal. Rigid setups are crucial with as short a stub drill as practical. Standard high speed steel drills work well. Sustains fluctuate from 0.0007 inches for each rev. for openings of under 1/16" measurement, 0.003 inches for each rev. for 1/4" dia., to 0.010 inches for each rev. for openings of 7/8"diameter. Surface speed of 45-55 feet/minute, are best to drill. Processing: To acquire great exactness and a smooth completion, it is fundamental to have unbending machines and fixtures and sharp cutting devices. High speed steel cutters, for example, M-2 or M-10 work best with cutting speeds of 60 to 80 feet per minute and feed of 0.005"- 0.008" per cutting tooth. Grinding: Monel 400 Alloy should be wet ground and aluminium oxide wheels or belts are favored.

• Marine engineering
• Chemical and hydrocarbon processing equipment
• Gasoline and freshwater tanks
• Crude petroleum stills
• De-aerating heaters
• Boiler feed water heaters and other heat exchangers
• Valves, pumps, shafts, fittings, and fasteners
• Industrial heat exchangers
• Chlorinated solvents
• Crude oil distillation towers

* The ranges shown are composites for various product sizes and therefore are not suitable for specification purposes. Hardness values are suitable for specification purposes provided tensile properties are not also specified.

*Alloy 400 is slightly magnetic at room temperature.

This alloy has a long history of use as a corrosion resistant material, dating back to the early 20th century when it was developed as an attempt to use a high copper content nickel ore. The nickel and copper contents of the ore were in the approximate ratio which is now formally specified for the alloy.