2.436 corrosion resistant alloy nickel-copper alloy?

overview of 2.436 (excerpts from Boschmante steel):

2.436 alloy (UNS N44,monel4) is a single-phase solid solution Ni-Cu alloy, which is mainly nickel, and can withstand various corrosive environments with good ductility.

it has good corrosion resistance in many medium environments. It has good corrosion resistance from mild oxidizing medium environment to neutral environment and suitable reducing environment. It has a long history as a corrosion-resistant material.

2.436 alloy is also used in underwater environment and non-oxidizing chloride solution.

2.436 corresponding brands:

UNS N44, monel4, NAS NW4, NCu3, 3 nickel-copper alloy and alloy4

2.436 implementation standards:

ASTM B127, ASTM B164 and ASTM B165.

2.436 characteristics:

2.436 is a corrosion-resistant alloy with large dosage, wide application and excellent comprehensive performance. This alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas medium, and also has excellent corrosion resistance to hot concentrated alkali liquor. At the same time, it is also resistant to the corrosion of neutral solution, water, seawater, atmosphere and organic compounds. An important feature of this alloy is that it generally does not produce stress corrosion cracks and has good cutting performance.

metallographic structure of 2.436:

the structure of 2.436 alloy is high-strength single-phase solid solution.

2.436 Corrosion resistance:

2.436 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 alloy in seawater. Acid medium: 2.436 is corrosion-resistant in sulfuric acid with concentration less than 85%. 2.436 is one of the few important materials that can resist hydrofluoric acid. Water corrosion: In most cases of water corrosion, 2.436 alloy not only has excellent corrosion resistance, but also pitting corrosion and stress corrosion are rarely found, and the corrosion rate is less than .25mm/a.. High-temperature corrosion: 2.436 works continuously in air at a temperature as high as 6℃, and in high-temperature steam, the corrosion rate is less than .26 mm/a.. Ammonia: Because of the high nickel content of 2.436 alloy, it can resist the corrosion of anhydrous ammonia below 585℃ and ammoniated conditions.

2.436 welding:

AWS A5.14 welding wire ERNiCu-7 or AWS A5.11 covered electrode ENICRCCU-7 is recommended for the welding of 2.436 alloy. Scope of application:

1. Seamless water pipes in power plants, Steam pipe

2. seawater exchanger and evaporator

3. sulfuric acid and hydrochloric acid environment

4. crude oil distillation

5. pump shaft and propeller of equipment used in seawater

6. equipment used in nuclear industry for uranium refining and isotope separation

7. pumps and valves used in hydrochloric acid production equipment

8. marine and chemical processing equipment < Propeller shaft

1. Gasoline and clean water tank

11. Processing containers and pipelines

12. Heat exchanger

2.436 Typical engineering applications:

1. Water supply and steam generator pipeline system of power station;

2. The theme part of the heater and evaporator in the salt plant;

3. Alkylation device for sulfuric acid and hydrofluoric acid;

4. industrial heat exchanger;

5. Composite plate in crude oil distillation unit;

6. Wave shields for offshore installations;

7. Shaft of propeller and pump in seawater system;

8. uranium and isotope separation system in nuclear fuel production;

9. pumps and valves in hydrocarbon chlorination production;

1. MEA reboiler pipeline.

2.436 main specifications:

2.436 seamless pipe, 2.436 steel plate, 2.436 round steel, 2.436 forgings, 2.436 flanges, 2.436 circular rings, 2.436 welded pipes, 2.436 steel belts, 2.436 straight bars, 2.436 wires and wires.