[MW:2215] Re: Monel K500

-Basically its CASTABLE Ni Alloy Grade. This has several Workability options starting from Forging, Sheet and to Rolling etc. Solution Annealing Grade need water quenching during heat treatment in making it free from residual stresses after any metal shaping, forming, casting forging etc processing.

-Nice combination strength and Mechanical Properties with Corrosion Resistance SEA Water Application.

-Machinable GRADE as well after Casting to many process starting from Investment till SAND Casting.

Chemistry Data : Aluminum 2.3 - 3.15 Carbon 0.25 max Copper 27 - 33 Iron 2 max Manganese 1.5 max Nickel Balance Silicon 0.5 max Sulphur 0.01 max Titanium 0.35 - 0.85 Principal Design Features 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. Applications Sea water pump shafts and impellers as well as being used in the oil well industry for valve trim and other components. Machinability 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 done. A very slight dimensional contraction occurs upon aging. In general this alloy, in the annealed condition, machines in a manner similar to that of the austenitic (300 series) stainless steels. Forming The alloy has good ductility and is readily formed in the annealed condition by standard means. Welding 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 range (900 F to 1100 F) should be avoided except when the final age-hardening treatment is to be accomplished. Heat Treatment The alloy may be annealed after cold working and also may be precipitation-hardened by an aging heat treatment. Forging Forging should be done in the range of 2100 F to 1900 F. Water quench immediately after forging. Hot Working 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. Cold Working The alloy has good ductility and may be cold worked by standard means. Annealing Anneal at 1900 F and water quench. Aging 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 severely cold-worked material aging should be done at 1000 F for at least 6 hours and then furnace cooled to 900 F at the 15 F to 25 F per hour rate. Hardening See "Aging". Other Mechanical Props Tensile values for annealed & aged bar. Physical Data : [top] Density (lb / cu. in.) 0.305 Specific Gravity 8.44 Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) 0.107 Electrical Resistivity (microhm-cm (at 68 Deg F)) 370 Melting Point (Deg F) 2440 Poissons Ratio 0.32 Thermal Conductivity 121 Mean Coeff Thermal Expansion 7.6 Modulus of Elasticity Tension 26 Mechanical Data : [top] Form Plate Condition Hot Finished Temperature 70 Tensile Strength 112 Yield Strength 65 Elongation 32 Form Plate Condition Hot Finished & Aged Temperature 70 Tensile Strength 160 Yield Strength 117 Elongation 25 Form Sheet Condition Annealed Temperature 70 Tensile Strength 98 Yield Strength 52 Elongation 35 Rockwell B90 Form Strip Condition Annealed Temperature 68 Tensile Strength 98 Yield Strength 52 Elongation 35 Form Strip Condition Spring Temper, Aged Temperature 70 Tensile Strength 195 Yield Strength 162 Elongation 7

ASK if any more info required over and above presented above.

PCP Rawal
Manager  Material Development-Customer Services Rock Test Center
Foundry unit Metso   Minerals (India) Pvt Ltd. Foundry unit, Plot no. 611-612. Odhav road,  Opp. Vallabhnagar, Odhav,
Ahmedabad 382415 Gujarat-India Phone No. +91-79-30260400 Ext-410  Fax No. +91-79-2297 06621
Direct  Phone no  079-30260410 Cell No  +91-98980-72916

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From:	vijay frnds <frndstovijay@gmail.com>
To:	materials-welding@googlegroups.com
Date:	05/19/2009 11:52 AM
Subject:	[MW:2213] Monel K500
Sent by:	materials-welding@googlegroups.com

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Hi Friends,

Could you please tell me What is the Casting, Forging, Bar Material for Monel K500.

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Urs . . .
Muthu
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