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Alloy K-500 / Monel K-500 / N05500 / 2.4375
When creating an alloy of the Monel alloy K-500 N05500 grade, the Monel
alloy 400 N04400 alloy was taken as a basis; the patent for its manufacture
belongs to the Special Metals Corporation.
Monel K500 is perfect for the production of shafts for pumping and compressor
equipment, parts and mechanisms, units of special equipment for oil and gas
engineering, for the manufacture of pipeline fittings.
Chemical composition of Monel K-500 in%
Physical properties of Alloy K-500
Density of Monel K-500 alloy (weight) - 8.44 g / cm3
Thermal properties N05500
Alloy Monel K-500 has all the characteristics and qualities of Monel alloy 400,
but the introduction of minimal additions of titanium and aluminum made it
possible to significantly increase the hardness and strength of K-500. In
addition, this alloy is characterized by a low degree of magnetic permeability,
and is inert to magnetization at low temperatures, reaching - 101 กใ C.
An important feature of the Monel K-500 is the ANSI / NACE MR0175 / ISO 15156-3
certification, which allows it to be used for the manufacture of wellheads,
parts of Christmas trees (except for bodies and covers), parts for gas lift
equipment. It is possible to operate alloy products under the influence of
hydrogen sulfide and chlorides in any concentration.
Alloy 500 is available in a variety of rolled products.
Corrosion resistance
The corrosion resistance of Nicorros AI does not fundamentally differ from that
of Nicorros. The material demonstrates excellent resistance to many media, from
pure water to mineral acids, salts and alkalis.
Nicorros AI is virtually immune to chlorine ions leading to cracking corrosion.
A hardened material can be sensitive to this type of corrosion in hot, liquid
acid vapor at a stress close to the expansion limit.
The material exhibits good resistance to fast flowing seawater and seawater, but
pitting can occur in slightly moving and stagnant water. In contrast, Nicorros
AI also has good resistance to acid gas environments.
Welding
Nicorros AI can be welded, or welded to other materials, using most conventional
welding methods. These methods include conventional tungsten welding, arc
welding or gas shielded welding. Arc welding is preferred. For gas-shielded
welding, it is recommended to use a multicomponent shielding gas (Ar + He + H2 +
COg).
When choosing coated rod electrodes, electrodes with identical chemical
composition to the base material are preferred.
Uncoated electrodes
Nicrofer S 6530 - FM 60
Op.-กํ2.4611
SG-NiCu 30 MnTi
AWSA5.14: ERNiCu-7
Coated electrodes
Op.-No. 2.4612
EL-NiCu30Mn
AWSA5.11: ENiCu-7
Main features and advantages of the alloy:
Excellent corrosion resistance in a wide range of natural and chemical
environments;
Good corrosion resistance to stress cracking due to the influence of chlorine
ions;
Very high strength and hardness.
After precipitation hardening, Nicorros AL exhibits the following
characteristics:
Approximately two to three times improved mechanical properties compared to
Nicorros nickel-copper base alloy (alloy 400);
Good voltage resistance up to 650 กใ C (1200 กใ F);
Good fatigue and corrosion fatigue strength;
Low permeability and no magnetisation down to -135 กใ C (-210 กใ F).
Spheres of use of the alloy:
Valve locks, pump sleeves and seawater wear rings;
Pump rods for fire extinguishing pumps High strength allows for a smaller
diameter and resistance to fast flowing seawater;
Propeller rods Small rod diameter and ball bearing ensure seawater resistance;
Reinforcements such as bolts in the sea air and during high and low tides
resistance to chloride-containing environment;
Scraper;
The armature of the tow ropes is non-magnetized and resistant to seawater;
The springs are resistant to a variety of media;
The oil drill shaft, as well as non-magnetizable drilling wheels, are resistant
to chloride-containing solutions and environments with acid gas;
Non-magnetic parts of instruments used in aviation.
Various products are produced from this alloy according to ASTM standards:
B865 - long products, wire, stamping, forging.
Other materials
Steel 20CrMoV13-5-5 - 1.7779
Steel EN-JS3031
BS310 steel - 1.4842
Steel DE 4511
API St 602
Steel G-3458 Grade STPA 24 / G-3458 Grade KSTPA 24
DIN 10289
Non-asbestos gaskets
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Inconel 625 / N06625 / 2.4856 Inconel 601 / N06601 / 2.4851 Inconel 718 / N07718 / 2.4668 Inconel 690 / N06690 / 2.4642
Inconel 617 / N06617 / 2.4663 Inconel X-750 / N07750 / 2.4669 Inconel 600 / N06600 / 2.4816 1.4876 / 1.4958:
Incoloy 800HT / N08811 / 1.4959 Incoloy 825 / N08825 / 2.4858 Incoloy 800H / N08810 / 1.4958 Incoloy 20 / N08020 / 2.4660
Incoloy 925 / UNS N09925 Hastelloy B-2 / N10665 / 2.4617 Hastelloy C-276 / N10276 / 2.4819 Hastelloy C-22 / N06022 / 2.4602
Hastelloy B-3 / UNS 10675 / 2.4600 Hastelloy C-4 / N06455 / 2.4610 Hastelloy X / N06002 / 2.4665 Monel 400 / UNS N04400 / 2.4360