A precipitation-hardenable nickel-copper alloy that combines the corrosion resistance of MONEL alloy 400 with greater strength and hardness. It also has low permeability and is nonmagnetic to temperatures as low as (-101°C). Used for pump shafts, oil-well tools and instruments, doctor blades and scrapers,springs, valve trim, fasteners, and marine propeller shafts.

Chemical composition
Ni : 63.0 min Si: 0.50 max Cu : 27-33 max S: 0.01 max Fe : 2.00 max
Mn : 1.50 max C : 0.25 max Ti: 0.35-0.85 Al : 2.30-3.15*Plus Co

Physical& Mechanical property
Density, g/cm³ 8.5
Melting range, ℃ 1315-1350
[Precipitation hardened]
Tensile Strength, MPa 1100
Yiled Strength(0.2% Offset), MPa. 790
Elongation, % 20

Specification
Bar, Rod, Wire : ASTM B 865, SAE AMS 4676, ASME Code Case 1192
Forging : ISO 9725
Pipe & Tube : BS3074NA18, DIN 17751
Plate, Sheet, Strip : BS3072NA18, BS3073NA18, DIN 17750, ISO 6208

Feature
Monel K500 has excellent corrosion resistance in an extensive range of natural and chemical environments, excellent resistance to chloride-ion stress-corrosion cracking and very high strength and hardness. After age-hardening, Monel K500 has approximately 2 to 3 times higher mechanical properties than the nickel-copper alloy (Monel 400), high tensile properties up to about 650 ℃, good corrosion fatigue resistance and ow permeability with non-magnetic down to -135 ℃.

Application
1. Valve seals, pump sleeves and wear rings in marine environments – high strength and resistance to seawater;
2. Fasteners, e.g. bolts, used in marine atmospheres and tidal waters – resistance to chloride-containing environments;
3. Doctor blades and scrapers;
4. Towing cable armouring – high strength, non-magnetic properties and resistance to seawater;
5. Oil well drilling equipment such as non-magnetic drill collars, valves and instrumentation sleeves – resistance to chloride-containing media and sour-gas environments;
6.Springs – resistance to a variety of corrosive media;
7.Aviation instrument components – non-magnetic properties