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Super Alloy Monel(r) Alloy K-500
General Information - Related Metals :
- Nickelvac K-500(tm)
- Nicorros Al(tm)
- Silverin 500(tm)
- CM K500(tm)
- AMS 4676
- ASTM F467
- ASTM F468
- DIN 2.4375
- MIL N-24549
- QQ N286
- UNS N05500
General Information - Principal Design Features
- Aluminum :0.15 max
- Carbon : 0.25 max
- Copper : 0.4 max
- Iron : 0.35 max
- Manganese : Balance
- Nickel : 0.35 max
- Silicon : 0.01 max
- Titanium : 0.01 max
This is an age-hardenable version of the nickel-copper alloy Monel 400. As such it has increased strength with the excellent resistance to sea water corrosion.
Sea water pump shafts and impellers as well as being used in the oil well industry for valve trim and other components.
The best machinability for this alloy is in the annealed condition. It may be machined in the aged condition, but the preferred practice is to rough machine as close to finish as possible in the annealed condition. Then aging and final machining may be
The alloy has good ductility and is readily formed in the annealed condition by standard means.
Corrosion resistance is similar to that of Monel 400 -- good in sea water and many acid environments. However in the aged-hardened condition Monel K500 is more susceptible to stress-corrosion cracking that Monel 400.
All of the conventional welding techniques may be used on this alloy. However it is best to weld with the alloy in the annealed
condition and the finished weldment should then be stress-relief annealed. Exposure to temperatures in the age-hardening rang
The alloy may be annealed after cold working and also may be precipitation-hardened by an aging heat treatment.
Forging should be done in the range of 2100 F to 1900 F. Water quench immediately after forging.
The hot work temperature range is 2100 F to 1600 F. Water quench immediately after hot working and do not allow to cool below 1600 F.
The alloy has good ductility and may be cold worked by standard means.
Anneal at 1900 F and water quench.
For annealed, or slightly cold-worked, material age-hardening is done at 1125 F for 16 hours and then furnace cooling at a rate of 15 F to 25 F per hour down to a temperature of 900 F. Cooling rate from 900 F to room temperature is not critical. For
Other Mechanical Props
Tensile values for annealed & aged bar.