Monel® Alloy R-405 (UNS N04405) Ni 66.5 Cu 31.5 S 0.04
High strength, good weldability, excellent corrosion resistance over wide range of temperatures and conditions.
Valves, pumps, shafts, marine fixtures, fasteners, electrical, and electronic components, processing equipment, petroleum refining and production equipment, feed water heaters and other heat exchangers.
Solid solution strengthened alloy with high strength and toughness over a wide range of temperatures. Corrosion resistant and oxidation resistant to 1000 ºF. Controlled sulfur added for improved machinability over alloy 400.
Water meter parts, screw machine products, fasteners, valve parts.
High strength, good weldability, excellent corrosion resistance over wide range of temperatures and conditions.
Valves, pumps, shafts, marine fixtures, fasteners, electrical, and electronic components, processing equipment, petroleum refining and production equipment, feed water heaters and other heat exchangers.
Solid solution strengthened alloy with high strength and toughness over a wide range of temperatures. Corrosion resistant and oxidation resistant to 1000 ºF. Controlled sulfur added for improved machinability over alloy 400.
Water meter parts, screw machine products, fasteners, valve parts.
| Items |
 R405-BAR-0.25 0.250 Inch (in) Size Monel® R-405 Alloy |
R405-BAR-0.375 0.375 Inch (in) Size Monel® R-405 Alloy |
R405-BAR-0.5 0.500 Inch (in) Size Monel® R-405 Alloy |
R405-BAR-0.625 0.625 Inch (in) Size Monel® R-405 Alloy |
R405-BAR-0.687 0.687 Inch (in) Size Monel® R-405 Alloy |
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| Type | Bar | |||||||||
| Process | ||||||||||
| Size | 0.250 in | 0.375 in | 0.500 in | 0.625 in | 0.687 in | |||||
| Alloy | R405 | |||||||||
| Density | 0.312 lb/in³ | |||||||||
| Specific Heat | 0.102 Btu/lb ºF | |||||||||
| Electrical Resistivity | 307 ohm/cir-mil-ft | |||||||||
| Curie Temperature | 20 to 50 ºF | |||||||||
| Melting Range | 2370 to 2460 ºF | |||||||||
| Thermal Expansion Coefficient at 70 to 200 Degree Fahrenheit (ºF) | 7.6 x 10-6 in/in/ºF | |||||||||
| Mechanical Type | Cold Drawn | |||||||||
| Tensile Strength | 85 to 115 ksi | |||||||||
| Yield Strength | 50 to 115 ksi | |||||||||
| Elongation | 35 to 15 % | |||||||||
| Hardness | B85 - C23 | |||||||||
| Minimum Nickel (Ni) | 63 | |||||||||
| Maximum Iron (Fe) | 2.5 | |||||||||
| Cobalt (Co) | Included in Nickel | |||||||||
| Copper (Cu) | 31 | |||||||||
| Maximum Manganese (Mn) | 2 | |||||||||
| Maximum Silicon (Si) | 0.5 | |||||||||
| Maximum Carbon (C) | ||||||||||
| Other | S 0.025 - 0.060 | |||||||||
| General Resistance | Corrosion | |||||||||
| Unified Numbering System (UNS) | N04405 | |||||||||
| Sheet/Plate USA | B127 QQ-N-281 | |||||||||
| Bar/Rod USA | B164 QQ-N-281 | |||||||||
| Weld Electrode | ENiCu-7 FM 190 | |||||||||
| Speed Surface | 60 ft/mm | |||||||||
| Speed Percent (%) of B1112 | 36 | |||||||||
| Note | These machinability ratios must be recognized as approximate values. They are a reasonable guide to relative tool life and lower required for cutting. It is obvious, however, that variables of speed, cutting oil, feed and depth of cut will significantly affect these ratios. | |||||||||
| Machining Section |
The alloys described here work harden rapidly during machining and require more power to cut than do the plain carbon steels. The metal is 'gummy', with chips that tend to be stringy and tough. Machine tools should be rigid and used to no more than 75% of their rated capacity. Both work piece and tool should be held rigidly; tool overhang should be minimized. Rigidity is particularly important when machining titanium, as titanium has a much lower modulus of elasticity than either steel or nickel alloys. Slender work pieces of titanium tend to deflect under tool pressures causing chatter, tool rubbing and tolerance problems. Make sure that tools are always sharp. Change to sharpened tools at regular intervals rather than out of necessity. Titanium chips in particular tend to gall and weld to the tool cutting edges, speeding up tool wear and failure. Remember- cutting edges, particularly throw-away inserts, are expendable. Don't trade dollars in machine time for pennies in tool cost. Feed rate should be high enough to ensure that the tool cutting edge is getting under the previous cut thus avoiding work-hardened zones. Slow speeds are generally required with heavy cuts. Sulfur chlorinated petroleum oil lubricants are suggested for all alloys but titanium. Such lubricants may be thinned with paraffin oil for finish cuts at higher speeds. The tool should not ride on the work piece as this will work harden the material and result in early tool dulling or breakage. Use an air jet directed on the tool when dry cutting, to significantly increase tool life. Lubricants or cutting fluids for titanium should be carefully selected. Do not use fluids containing chlorine or other halogens (fluorine, bromine or iodine), in order to avoid risk of corrosion problems. The speeds are for single point turning operations using high speed steel tools. This information is provided as a guide to relative machinability, higher speeds are used with carbide tooling. |
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