Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
Monel K500 (UNS n05500)is a precipitation-hardenable nickel-copper alloy that combines the excellent corrosion resistance characteristic of Monel 400 with the added advantage of greater strength and hardness.
These amplified properties, strength and hardness, are obtained by adding aluminum and titanium to the nickel-copper base and by a thermal processing used to effect precipitation, typically called age hardening or aging. When in the age-hardened condition, Monel K-500 has a greater tendency toward stress-corrosion cracking in some environments than Monel 400 Pipe. Alloy K-500 has approximately three times the yield strength and double the tensile strength when compared with Monel k500 Sheet. Plus, it can be further strengthened by cold working prior to precipitation hardening. The strength of this nickel steel alloy is maintained to 1200° F but stays ductile and tough down to temperatures of 400° F. Its melting range is 2400-2460° F.
This nickel alloy is spark resistant and non-magnetic to -200° F. However, it is possible to develop a magnetic layer on the surface of the material during processing. Aluminum and copper may be selectively oxidized during heating, leaving a magnetic nickel rich film on the outside. Pickling orbright dipping in acid can remove this magnetic film and restore the non-magnetic properties.
Corrosion Resistant Of Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
The corrosion resistance of Monel K-500(ASTM B865) is substantially equivalent to that of alloy 400 except that when in the age-hardened condition, nickel alloy K-500 has a greater tendency toward stress-corrosion cracking in some environments. Monel K-500 fasteners has been found to be resistant to a sour-gas environment. The combination of very low corrosion rates in high-velocity sear water and high strength make .Monel K-500 Plate particularly suitable for shafts of centrifugal pumps in marine service. In stagnant or slow-moving sea water, fouling may occur followed by pitting but this pitting slows down after a fairly rapid initial attack.
Chemical Composition - Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
|63.0-70.0||Remainder||2.30-3.15||.35-.85||.25 max||1.5 max||2.0 max||.01 max||.50 max|
Applications of Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
Fabrication with Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
Monel K-500 is readily fabricated by standard commercial procedures.
Welding Monel K-500 Wire is best accomplished by the gas-tungsten-arc welding process. It is recommended that Monel K-500 be annealed when it is welded and that any weldments be stress relieved prior to aging.
Heavy machining of this alloy is best accomplished when the material is in the annealed condition or hot-worked and quenched condition. Age-hardened material however can be finish-machined to close tolerances and fine finishes. Therefore, the recommended practice is to machine slightly oversize, age-harden, then finish to size. During aging, a slight permanent contraction takes place, but little warpage occurs because of the low temperatures and slow cooling rates involved.
Mechanical Properties : Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
Typical Room Temperature Tensile Properties of Annealed Material
|Product Form||Condition||Tensile (ksi)||.2% Yield (ksi)||Elongation %||Hardness|
|Rod & Bar||Hot-Finished/Aged||140-190||100-150||30-20||27-38 HRC|
|Rod & Bar||Hot Finished/Annealed||90-110||40-60||45-25||75-90 HRB|
|Rod & Bar||Hot Finished/Annealed/Aged||130-165||85-120||35-20||24-35 HRC|
|Rod & Bar||Cold-Drawn/Aged||135-185||95-160||30-15||25-41 HRC|
|Rod & Bar||Cold-Drawn/Annealed/Aged||130-190||85-120||30-20||24-35 HRC|
|Sheet||Cold-Rolled/Annealed||90-105||40-65||45-25||85 HRB Max|
Available forms are :Monel k500 Round Bar/Fasteners/Sheet/Plate/Pipe,ASTM B865 UNS n05500
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