Monel/ Hastelloy/ Inconel Fastener

KENENG is a professional manufacturer of special alloy fasteners. The main products are high-temperature alloy fasteners, corrosion-resistant alloy fasteners, precision alloy fasteners, and other non-ferrous metal products. Such as Monel fasteners Hastelloy fasteners, and Inconel fasteners.

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Detailed Introduction About Monel Material

Monel alloy, also known as nickel alloy, is an alloy made of metal nickel as a matrix by adding copper, iron, manganese and other elements. Monel alloy has good corrosion resistance and is silvery-white, which is suitable for edge wire material.

The main Monel products are MONEL® alloy 400; MONEL® alloy 401; MONEL® alloy 404; MONEL® alloy R-405; MONEL® alloy K-500.

Monel is often used for kitchen sinks and in the frames of eyeglasses. Its corrosion-resistant characteristic makes it ideal for marine applications such as piping systems, pump impellers, trolling wire, and strainer baskets. Some alloys are completely non-magnetic and are used for anchor cable aboard minesweepers, housing magnetic field measurement equipment, and have applications in the oil drilling industry.

Monel is typically much more expensive than stainless steel.

The structure of Monel 400 alloy is a high-strength single-phase solid solution and a single-phase austenite structure.

This alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas medium, and also has excellent corrosion resistance in hot concentrated alkali solution. At the same time, it is also resistant to corrosion by neutral solutions, water, seawater, atmosphere, organic compounds, etc. An important feature of this alloy is that it generally does not produce stress corrosion cracking and has good machinability. The alloy is mainly used in valve stems, pump shafts and impellers, conveyor scrapers, oil well drill collars, elastic parts, valve pads, etc.

Monel 400 alloy (UNS N04400 or MCu-28-1.5-1.8 or Ni68Cu28Fe) is a kind of alloy in seawater, chemical solvent, ammonia sulfur chloride, hydrogen chloride, various acidic media such as sulfuric acid, hydrofluoric acid, hydrochloric acid, phosphoric acid, organic acid , Nickel-based alloy material with good corrosion resistance in alkaline medium, salt and molten salt.

Monel 400 alloy also has good mechanical properties, a wide range of use temperatures from low temperature to high temperature, good welding performance and medium and high strength.

Monel 400 is mainly used in chemical and petrochemical and marine development fields. It can be used to manufacture various heat exchange equipment, boiler feed water heaters, petroleum and chemical pipelines, containers, towers, tanks, valves, pumps, reactors, shafts, etc.

Executive standards: ASTM B 164 (rod, wire), ASTM B 564 (forging), ASTM B 127 (plate, strip), ASTM B 165 (seamless pipe).

Monel 400 chemical composition element content.

Nickel63.0minMonel 400 Physical PropertiesElastic Modulus
Copper28min~34maxDensity 0.318 lb / in3
26 000 ks
Manganese2.0maxThermal conductivityMelting point
Carbon0.3max21.8 W/m-K1300 – 1350°C
Silicon0.5maxHeating energy
Sulfur0.024max0.427 J/g-°C

Detailed Introduction About Inconel Material

Inconel is an alloy. The main components are nickel and iron, and also contain impurity elements such as Cr, Si, S, P, C, etc. which can work for a long time at high temperatures above 600°C and under certain stress; and has high high temperature strength, good oxidation resistance and corrosion resistance. , good fatigue properties, fracture toughness and other comprehensive properties. Inconel is a single austenitic structure and has good microstructure stability and reliability at various temperatures. Based on the above performance characteristics, and the high degree of alloying of Inconel, it is also called “super alloy”.

Inconel is an important material widely used in aviation, aerospace, petroleum, chemical industry and ships. According to the base element, Inconel is divided into iron-based, nickel-based, cobalt-based and other inconel alloys. Incoloy and Inconel alloy materials are two different series of steel metal materials, both of which belong to nickel-chromium-iron alloy production, but Incoloy is a heat-resistant nickel-chromium-iron alloy, and Inconel is a heat-resistant and corrosion-resistant nickel-chromium iron alloy.

Inconel characteristic

①In the state of oxidation and reduction, it has excellent corrosion resistance to most corrosive media.

②It has excellent resistance to pitting corrosion, crevice corrosion and stress cracking corrosion.

Inconel alloys possess several properties making them well suited for service in extreme environments.

Inconel is very resistant to oxidation and corrosion, and it retains strength over a wide range of temperatures. This makes it particularly attractive in high-temperature applications where aluminum and steel would “soften”.

Die-Cut Products stocks a variety of Hastelloy, Inconel, & Monel grades and tempers.

Detailed Introduction About Hastelloy Material

Hastelloy is a nickel-based corrosion-resistant alloy, which is mainly divided into two categories: nickel-chromium alloy and nickel-chromium-molybdenum alloy. Hastelloy has good corrosion resistance and thermal stability, and is mostly used in aviation, chemical fields, etc.

Hastelloy plates are suitable for various chemical industries containing oxidizing and reducing media. The higher content of molybdenum and chromium makes the alloy resistant to chloride ion corrosion, and the tungsten element further improves the corrosion resistance. At the same time, C-276 Hastelloy tube is one of the only materials resistant to the corrosion of wet chlorine gas, hypochlorite and chlorine dioxide solutions. Significant corrosion resistance.

Application fields, heat exchangers, bellows compensators, chemical equipment, flue gas desulfurization and denitrification, paper industry, aerospace applications, acid environments.


Hastelloy alloy is mainly divided into three series: B, C and G. It is mainly used for strong corrosive media such as iron-based Cr-Ni or Cr-Ni-Mo stainless steel and non-metallic materials that cannot be used.

B series: B→B-2(00Ni70Mo28)→B-3

C series: C→C-276(00Cr16Mo16W4)→C-4(00Cr16Mo16)→C-22(00Cr22Mo13W3)→C-2000(00Cr20Mo16)

G series: G→G-3 (00Cr22Ni48Mo7Cu)→G-30 (00Cr30Ni48Mo7Cu)

The most widely used are the second-generation materials N10665(B-2), N10276(C-276), N06022(C-22), N06455(C-4) and N06985(G-3)

The most advantages of the Hastelloy super alloys is that of effective survival under high temperature, high-stress service in a moderately to severely corrosive, and/or erosion-prone environment, where more common and less expensive iron-based alloys would fail.

Monel, Hastelloy, Inconel 
chemical composition of Monel, Hastelloy, Inconel 

Advantages of Monel400 copper-nickel alloy

1. Monel400 copper-nickel alloy is a corrosion-resistant alloy with the largest amount, the most widely used and excellent comprehensive properties. This alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas medium, and also has excellent corrosion resistance in hot concentrated alkali solution. At the same time, it is also resistant to corrosion by neutral solutions, water, seawater, atmosphere, organic compounds, etc. High temperature and corrosion resistant alloy, widely used in seawater and other fields. An important feature of this alloy is that it generally does not produce stress corrosion cracking and has good machinability.

2. Metallographic structure of Monel 400:

The microstructure of Monel400 alloy is a high-strength single-phase solid solution.

3. Corrosion resistance of Monel 400:

Monel400 alloy has excellent corrosion resistance in fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives. At the same time, it is more corrosion-resistant than copper-based alloys in seawater. Acid medium: Monel 400 is corrosion resistant in sulfuric acid with a concentration of less than 85%. Monel400 is one of the few important materials that can resist hydrofluoric acid. Water corrosion: Monel400 alloy not only has excellent corrosion resistance in most water corrosion conditions, but also pitting corrosion and stress corrosion are rarely found, and the corrosion rate is less than 0.025mm/a.

4. High-temperature corrosion: The maximum temperature of Monel400 working continuously in air is generally around 600℃, and in high-temperature steam, the corrosion rate is less than 0.026mm/a.

Monel 400 Application Areas

1. Seamless water pipes and steam pipes in power plants

2. Seawater exchangers and evaporators

3. Sulfuric acid and hydrochloric acid environment

4. Crude oil distillation

5. Pump shafts and propellers of equipment used in seawater

6. The nuclear industry uses equipment for the manufacture of uranium refining and isotope separation

7. Manufacture of pumps and valves used in the production of hydrochloric acid equipment

Why choose KENENG

Keneng is a professional manufacturer of special alloy fasteners . The main products are: high-temperature alloy fasteners, corrosion-resistant alloy fasteners, precision alloy fasteners and other non-ferrous metal products. Various products are widely used in petrochemical, aerospace, machinery manufacturing, electronic information industry, household appliances industries. The product has high technical content and long process flow. The material has to go through more than ten processes such as vacuum smelting, electroslag remelting, forging, hot rolling, grinding, cold rolling, annealing, polishing, testing, inspection, etc.

Keneng has established long-term and stable cooperative relations with customers, with complete varieties and reasonable prices. The company has strong strength, attaches great importance to credit, abides by contracts, and guarantees product quality. Production and business scope: various specifications of self-tapping mechanism screws, copper posts, nuts, flat washers, red paper pads, internal and external teeth, key chains. Various specifications of welding pieces, corns, steel balls, card kings, tightening, combination screws, etc. Precision production of various non-standard car parts, screws, special-shaped springs, stamping parts, battery sheets, etc. Nylon screws, nylon nuts, nylon studs, etc.

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