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1: Grade Hastelloy C59 grade nickel-chromium-molybdenum alloy.
Two: chemical composition.
Carbon C: Silicon Si: Manganese Mn:
Phosphorus p: sulfur s: nickel ni:
Base, chromium cr:,molybdenummomo:,tungsten w:
Iron Fe: , Al Al: .
Three: the scope of application.
Alloys have a wide range of applications in the chemical, petrochemical, energy manufacturing and pollution control fields, and typical applications are as follows:
This is especially true when using acidic chloride catalysts. 2. Digesters and bleaching equipment in the pulp and paper industry. 3. Scrubbers, reheaters, throttle valves, wet steam fans and agitators in FGD and IG systems.
4. Equipment and components operating in an acidic gas environment. 5. Reactor for acetic acid and acetic anhydride products. 6. Sulfuric acid condenser.
Four: Overview. Nickel-based alloys outperform other Ni-Cr-Mo stainless steels in most standard corrosion tests in oxidizing environments.
Alloy59 (N06059) nickel-based alloys have a corrosion rate more than three times lower than conventional Ni-Cr-Mo stainless steel in some reducing environments (e.g., boiling 10% sulfuric acid) and are also suitable for use in chemical process industries in reducing environments. Alloy59 (N06059) nickel-based alloy has excellent corrosion resistance in hydrochloric acid.
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Alloy59 alloy is an improved alloy based on 00Cr16Ni65Mo16Ti by increasing chromium and reducing iron, with high chromium content, no W, very low iron content of high-purity Ni-Cr-Mo alloy, with high microstructure and thermal stability, is currently a good comprehensive corrosion resistance and thermal stability of Ni-Cr-Mo alloy, intergranular corrosion resistance is very prominent.
Alloy59 Chemical Composition: Carbon C: Silicon Si:
Manganese Mn: Phosphorus P: Sulfur S:
Nickel Ni: Nickel Cr: , Molybdenum Mo: , Tungsten W: , Iron Fe: , Aluminum Al:.
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Alloy59 (UNS N06059) alloy is a new alloy invented by VDM on the basis of Hastaloy C4 to increase the chromium content to 23%, reduce the iron content to less than 1%, and remove titanium. Alloy 59 is a "pure nickel-chromium-molybdenum alloy" with high chromium content and total Cr+MO content, low iron content and no tungsten, copper, titanium and other elements in the nickel-chromium-molybdenum (tungsten) alloy series. Due to the reasonable ratio of its alloy chemical composition, this alloy is a corrosion-resistant alloy with good comprehensive corrosion resistance and high microstructure and thermal stability.
Alloy59 (UNS N06059) density: g cm3
Second, performance. l Significant resistance to corrosive media under a range of oxidizing and reducing conditions.
l Resistant to pitting and crevice corrosion, immune to chloride-containing corrosion cracking.
l Good corrosion resistance to mineral acids, such as nitric acid, phosphoric acid, sulfuric acid and hydrochloric acid, especially to sulfuric acid and hydrochloric acid mixtures.
l Excellent corrosion resistance to contaminated mineral acid.
l Good corrosion resistance to all hydrochloric acid at temperatures up to 40°C (104°F).
l Good processability and welding performance, no post-welding crack susceptibility.
l The temperature range allowed for use in the pressure vessel industry is 196 to 450 °C (320 to 840 °F).
l Complies with NACE MR0175 High Class VI - for use in sour gases.
3. Use. Alloy59 (UNS N06059) alloy has been widely used in various industries such as chemical, petrochemical, pharmaceutical, energy production and pollution control equipment.
Typical applications include:
l Production of chlorine-containing organic compounds, especially acid chlorides as components in the production of catalysts;
Cooking and bleaching facilities for the pulp and paper industry;
l Dust collectors, superheaters, dampers, wet vermicelli and agitators for incinerator gas gas and flue gas desulfurization equipment;
l Equipment and components for sulfur-containing gases;
l Reactor for acetic acid and acetic anhydride.
l Sulfuric acid cooler.
l Serpentine heater.
l Acrylic hydrochloric acid methacrylic acid reactor.
Fourth, similar grades.
nicrofer® 5923 hmo, alloy59,uns n06059,w.-nr. ,nicr23mo16al
5. Chemical composition (%)
cr=,fe,c,mn,si,mo=,co,al=,p,s - according to astm standards.
6. Relevant technical standards.
ASTM B622 Seamless Tubing.
ASTM B619 626 Welded Pipe.
ASTM B575 Plate Coil.
ASTM B574 Bars, Wires.
ASTM B575 Strip.
ASTM B564 Forgings.
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There are various materials for alloy elbows, such as carbon steel, manganese steel, nickel steel, etc. Alloy elbows are very versatile.
Ordinary bronze alloy elbows are more common in general water pipes, but with the improvement of living standards, many water pipes have a strong impact in pipes. Therefore, it is often used in high-temperature water vapor transmission pipelines and water gas pipelines. In pipelines with serious wear and tear consumption, such as transportation pipelines.
Due to the wear-resistant, corrosion-resistant and heat-resistant properties of the alloy elbow, it can be widely used in electric power, metallurgy, mining, coal, chemical and other industries as a transportation of sand, stone, pulverized coal, ash, liquid aluminum and other grinding granular materials and corrosive media, and is an ideal wear-resistant pipeline.
1. Application in metallurgy and power industry.
Metallurgical and power industries need to consume a large number of metal pipelines every year to transport pulverized coal, ash, mud, lime gypsum slurry, etc. The use of ceramic composite pipes to replace other pipes has the characteristics of high wear resistance, long life, convenient installation and significant economic benefits.
2. Application in mining and coal industry.
1) Mine: Mine filling, concentrate powder and tailings transportation on the pipeline wear is serious, the previous use of powder transportation pipelines such as Panzhihua, Daye Mine and other service life is less than one year, changing to the pipe can increase the life of about 5 times.
2) Coal: Coal preparation and long-distance pipeline coal transportation generally use wet transportation, which requires the conveyor pipe to be both wear-resistant and corrosion-resistant, and the pipe can be used as a long-life conveying pipe, with considerable economic benefits.
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It mainly depends on the medium and working conditions you use to determine that there are many alloys.
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Alloy elbows made of manganese steel are usually used in concrete transportation pipelines, mud transportation pipelines and other pipelines with serious wear and consumption due to the excellent properties of manganese steel to withstand impact balance, extrusion, material wear, etc. The high manganese steel alloy elbow is used in the pipeline with intense fluid flow and strong impact; Alloy elbows made of nickel steel are usually used in normal temperature transportation pipelines with high concentrations of oxidizing acids (nitric acid, sulfuric acid), etc., but will be seriously corroded in the transportation pipelines of reducing acids (hydrochloric acid, dilute sulfuric acid, etc.), unless the concentration of hydrochloric acid is very low; Martensitic alloy bent dismantling below 650 has high high temperature strength, oxidation resistance and water vapor corrosion resistance, but the weldability is poor. Therefore, it is often used in high-temperature water vapor transmission pipelines and water gas pipelines.
Alloy elbows of different materials will not cause pollution, and socks will not affect transportation.
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Alloy elbows are mainly used for connections where pipes are connected. Two pipes with the same diameter can make a 90-degree turn. Alloy elbow is mainly a general term for a variety of elbows, and its materials are very numerous.
Common carbon steel, manganese steel and nickel steel, alloy elbows are very widely used, ordinary bronze alloy elbows are generally mainly from the tap water pipes are more common, but later a lot of tap water pipes gradually changed to stainless steel elbows. The elbow of the alloy made of manganese steel can withstand more pressure and load capacity.
It is relatively resistant to corrosion and is often used between transport pipes. However, the fluid of the elbow of high manganese steel is more intense, and the impact is stronger. Elbows made of nickel steel are usually used in high concentrations of oxidizing acids, but reducing acids are susceptible to environmental corrosion unless their concentrations are very low.
It has high high temperature strength, oxidation resistance and water vapor resistance, but its welding properties are relatively poor. Therefore, it is often used in pipelines for the transportation of high-temperature water vapor, pipelines for water, coal, and gas. Alloy elbows are very widely used, ordinary bronze alloy elbows are generally mainly from the more common water pipes, but later a lot of tap water pipes gradually changed to stainless steel elbows.
The elbow of the alloy made of manganese steel can withstand more pressure and load capacity. It is relatively resistant to corrosion and is often used between transport pipes. The production cost of alloy elbow is relatively low, relatively low, and the scope of application is relatively wide.
High temperature resistance, corrosion resistance, anti-freezing and anti-cracking. Therefore, the cost performance ratio is relatively high. It has been warmly welcomed by the broad masses of people, and it is safer and environmentally friendly, and there will be no pollution in the production and sales of the current town.
So it doesn't affect the transportation.
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In pipelines with serious wear and tear consumption, such as transportation pipelines. Automatic pipe bender pipe fittings have different production processes and processes, which need to be produced and processed according to certain conditions in the processing, and some matters need to be paid attention to in the processing of elbow pipe fittings of different properties. Taking alloy elbows as an example, if you want to make long-radius alloy elbows, you must first select the specifications of the steel pipes, put forward the pipe materials, and select high-quality steel pipes for production.
Because some elbows will twist after improper handling, which is not allowed. In addition, after pushing the head, the front end generally has a large outer diameter, and it is necessary to shape it through a shaping die. The shaping mold is actually a press, and it is necessary to have a set of molds, two and a half sail arcs, one each at the top and bottom.
The outer diameter of the shaped product meets the size requirements of the finished product. The wall thickness is controlled according to the wall thickness of the material. The wall thickness tolerances for both the elbow and the tube are the same.
But as long as it is done well and the right alloy elbow is selected, it will not affect the transportation.
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You don't understand what you said, the general elbow is wear-resistant, that is, you can determine whether the hardness is good or not, durable or not, the test method is very simple, portable hardness tester is enough.
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Alloy elbows made of manganese steel are usually used in concrete transportation pipelines, mud transportation pipelines and other pipelines with serious wear and consumption due to the excellent properties of manganese steel to withstand impact, extrusion, material wear, etc. The high manganese steel alloy elbow is used in the pipeline with intense fluid flow and strong impact; Alloy elbows made of nickel steel are usually used in normal temperature pipelines such as high concentrations of oxidizing acids, but will be severely corroded in reducing acid pipelines, unless the concentration of salt suan is very low; Martensitic alloy elbows below 650 have high high temperature strength, oxidation resistance and water vapor corrosion resistance, but the weldability is poor. Therefore, it is often used in high-temperature water vapor transmission pipelines and water gas pipelines.
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Requires control of the radius of curvature. For example, if the radius length is, then the radius of curvature must be within the required tolerances. Since most of these pipe fittings are used for welding, in order to improve the welding quality, the ends are turned into grooves, leaving a certain angle, with a certain edge, this requirement is also relatively strict, how thick the edge, how much the angle is and the deviation range are specified, and there are many more items in geometric size than the pipe fittings.
The surface quality and mechanical properties of the elbow are basically the same as those of the tube. In order to facilitate welding, the steel material of the connected pipe should be the same. It is used in stainless steel pipe system to improve the dimensional accuracy of double snap pipe fittings.
The error of the promised pipe is increased, and the adaptability is stronger.
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