General Information
Chemical Composition
Physical Properties
Mechanical Properties
General Information
Monel K500 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. Alloy K-500 has approximately three times the yield strength and double the tensile strength when compared with alloy 400. 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.

The characteristics of Monel K500

Corrosion resistance in an extensive range of marine and chemical environments. From pure water to non-oxidizing mineral acids, salts and alkalis.
Excellent resistance to high velocity sea water
Resistant to a sour-gas environment
Excellent mechanical properties from sub-zero temperatures up to about 480C
Non-magnetic alloy

Standard Inventory Specifications

QQ-N-286 – Form 1
UNS N05500

Common Trade Names

Monel K500
Alloy K500
Monel alloy K-500

Common Applications of K500

Monel K-500 alloy finds wide applications in the marine, chemical, petrochemical and shipbuilding industries. Typical applications include:
Valve seals, pump sleeves and wear rings in marine environments – high strength and resistance to seawater
Pump shafts for fire-fighting pumps – high strength (resulting in smaller diameter shafts) and resistance to flowing seawater
Propeller shafts – high strength (resulting in smaller diameter shafts and thus smaller bearings) and resistance to seawater
Fasteners e.g. bolts, used in marine atmospheres and tidal waters – resistance to chloride – containing environments
Doctor blades and scrapers
Towing cable armoring – high strength, non-magnetic properties and resistance to seawater
Springs – resistance to a variety of corrosive media
Oil well drilling equipment such as non-magnetic drill collars, valves and instrumentation sleeves – resistance to chloride-containing media and sour gas environments
Aviation instrument components – non-magnetic properties

Chemical Composition

Alloy K500 Chemical Composition

Element

Percent by Weight

Ni

Nickel

63% min

Mn

Manganese

1.50% max

Si

Silicon

0.50% max

Fe

Iron

2.00% max

Al

Aluminum

2.30% – 3.15%

S

Sulfur

0.010% max

C

Carbon

0.18% max

Cu

Copper

27.0% – 33.0%

Physical Properties

Physical Properties and Corrosion Resistance

The corrosion resistance of alloy K-500 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 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 alloy K-500 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

Mechanical Properties

Mechanical Properties K500

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
Plate	ot-Finished /Aged	140-180	100-135	30-20	27-37 HRC
Sheet	Cold-Rolled /Annealed	90-105	40-65	45-25	85 HRB Max

Fabrication with Monel K-500

Monel K-500 is readily fabricated by standard commercial procedures.
Welding alloy K-500 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.

K500 Pipes
K500 Fittings
K500 Bars
K500 Sheets & Plates
K500 Coils & Strips
K500 Wires

K500 Seamless Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: K500…
Size: OD: Φ4-Φ1219mm; WT:…
Introduction: Wisine its production capacity of stainless steel seamless pipe, roughly 2100 tons per month. As per your requirement…