Archive for category: company news

NI200 is a pure nickel material that differs from ordinary nickel-based alloys in terms of chemical composition. Other elements such as chromium, molybdenum, titanium, and iron are added to ordinary nickel-based alloys to improve their corrosion resistance and high-temperature performance. NI200 nickel-based alloy is commonly used in chemical, electric power, nuclear industry, aerospace, and other fields due to its high purity and excellent chemical stability, and electrochemical properties.

This paper reviews the research progress of NI200 pure nickel and its alloys, focusing on the organizational structure, physical and mechanical properties, corrosion behavior, and application fields of pure nickel and nickel-based alloys. It also discusses the current problems and future development trends of it.

It has a face-centered cubic structure and has excellent mechanical properties and high-temperature stability. In addition, the addition of other elements, such as chromium, molybdenum, and titanium, to nickel-based alloys can improve their oxidation resistance and corrosion resistance. Therefore, in engineering applications, nickel-based alloys are usually composites composed of multiple elements.

Corrosion behavior of NI200 nickel-based alloy

It has good corrosion resistance to oxygen, water vapor, hydrochloric acid, sulfuric acid, and other media. However, there are still problems of corrosion in strong acids and etching media. When studying corrosion behavior, factors such as chemical composition, crystal structure, and cracking of the material need to be taken into account to develop suitable corrosion prevention measures.

NI200 nickel-based alloy application areas

It is widely used in the aerospace, chemical, nuclear, and power industries. In the manufacture of turbine components, aero engines, high-temperature furnaces, etc., the high-temperature resistance of nickel-based alloys is fully utilized. In addition, in the nuclear industry, NI200 pure nickel material is also widely used on the internal components of nuclear reactors.

It still has some problems in practical application, such as material corrosion, welding problems, etc. Future research directions include composite modification of the material, new surface treatment technology, and advanced manufacturing processes. Through these efforts, its performance will be further improved and its application areas will be expanded.

This paper reviews the research progress of NI200 pure nickel and its alloys in terms of tissue structure, physical and mechanical properties, corrosion behavior, and application areas. However, there are still problems in the practical application of this material, which need further research and improvement.

Hastelloy C22 and titanium alloy are both high-quality metal materials, widely used in industry, aerospace, and other fields. So, which is better in terms of electrical conductivity, Hastelloy C22 or titanium alloy? The following will be a detailed comparison of their electrical conductivity.

First of all, it is important to understand that electrical conductivity is an important physical property of a material, which describes the ability of charge to be transferred within the material, depending on factors such as the structure and chemical composition of the material, etc. Hastelloy C22 and titanium alloys are slightly different in terms of chemical composition, structure, etc., so their electrical conductivity will also be different.

Hastelloy C22 is a nickel-based alloy consisting mainly of nickel, molybdenum, chromium, and iron, and has excellent corrosion resistance and high-temperature properties. Comparatively speaking, Hastelloy C22 is not as conductive as titanium alloys. This is because the composition of Hastelloy C22 contains some relatively high elements, such as molybdenum and chromium, which will have some influence on the electrical conductivity of the material.

Titanium alloy is a metal material with titanium as the main component, which has good corrosion resistance and high specific strength, among other characteristics. Compared with Hastelloy C22, titanium alloy has better electrical conductivity. This is because the titanium element in the titanium alloy has good electrical conductivity and the structure of the material is relatively simple and is not affected by other elements. Therefore, titanium alloys are more commonly used in some application scenarios that require high electrical conductivity, such as aerospace and electronic equipment.

It should be noted that Hastelloy C22 and titanium alloys have their own advantages and limitations in terms of applications. Hastelloy C22 has excellent corrosion resistance and high-temperature performance, and is widely used in some strong corrosive environments; while titanium alloys have good strength and toughness, and also have a wide range of application prospects in aerospace, medical devices, and other fields.

In summary, Hastelloy C22 and titanium alloys are slightly different in terms of electrical conductivity, with titanium alloys having better electrical conductivity. However, when selecting materials, other factors such as corrosion resistance and mechanical properties need to be taken into account to choose the most suitable material to ensure the stable operation of equipment and systems.

As the flagship nickel alloy in our impressive range of materials on offer, the INCONEL 625 alloy is a marvel in the INCONEL alloy range. Its many positive properties mean that it has many different industrial applications, making it a particularly versatile alloy.

This high-performance material is often praised for its excellent corrosion resistance, even in the harshest environments and at the highest temperatures. But this is not its only characteristic; this alloy has been carefully crafted to provide a wealth of physical and mechanical properties that help solve common design engineering problems.

Over the years, the Inconel 625 alloy has been developed to further enhance these properties. Since the 1960s, when it was first introduced as a material for steam pipes, it has been refined to improve its creep resistance and weldability, thus increasing its number of industrial applications.

Defining mechanical properties of INCONEL 625

1. There are many factors to consider in the selection of materials. It is important to assess the physical and mechanical properties of an alloy to see how these properties match the intended end use.

Physical properties are measurable characteristics, such as the electrical conductivity or melting point of an alloy. These properties are a fact of the alloy’s composition and are useful points to consider.

However, the mechanical properties of an alloy are more useful for design engineers to compare the properties of different metal alloys to meet their requirements. Mechanical properties are an indication of how a material will perform under different forces. These include strength (tensile, fracture, fatigue, etc.), ductility, and wear resistance.

Mechanical properties can be affected by the way an alloy is processed, which is why some nickel alloys are hot or cold-worked to obtain the right balance of mechanical properties. Balance is necessary when selecting a material – some materials perform well under certain conditions and in certain properties, but are weaker in others. It is therefore important to choose the right alloy for the right strength and range of application.

Key mechanical properties of INCONEL 625 CrNiFe alloy

2. Although numerous tests have been carried out on nickel alloys to determine their mechanical properties, one of the most important is the tensile strength test. This property is related to the amount of load that the metal can withstand before fracture. The metal passes through a number of important strength points before it finally fractures. The material will first begin to deform and stretch until it reaches the point where it retains that deformation (as opposed to returning to its original shape). This is the yield strength. When the material reaches the load at which it will eventually break, this is the tensile strength. The more a material can resist permanent deformation in shape, the harder it is called an alloy.

INCONEL 625 has a high level of strength and hardness. By cold-working the alloy, it is possible to increase the tensile strength of the material at intermediate-temperature operating conditions. When exposed to intermediate temperatures, some hardening occurs within the alloy.

Another key test carried out on alloys is to determine their strength, i.e. to observe their fatigue strength. This is how much repetitive stress a metal can withstand, although it depends very much on the level of stress the metal is subjected to, and the frequency and duration of the applied stress. INCONEL 625 exhibits good fatigue strength at room temperature, as well as solid-state properties at high temperatures – which vary depending on whether the metal has been solution treated or annealed.

As an example of its exceptional fatigue strength, the endurance limit for INCONEL 625 alloy was found to be 90,000 psi for smooth bars in 108 cycles at room temperature using cold-rolled annealed plates in full reverse bending. the toughness of a material is usually measured by impact testing to see how well an alloy can absorb an impact without breaking. This is usually done over a range of temperatures. Ductility is also tested to see how much a material can stretch without breaking and how much it retains its new shape after the force is removed. Both toughness and ductility are compromised at very low temperatures when the material is more prone to cracking. However, INCONEL 625 alloy retains its excellent toughness and ductility at temperatures as low as -320 °F.

3. To give INCONEL 625 alloy the best mechanical properties, it is usually hot-worked, cold-worked, or annealed at temperatures below 1200°F. For hotter temperatures, it has the best properties when annealed or solution treated. Typically, if parts with optimum creep or fracture resistance are required, the material is usually solution treated.

It does need to be machined by hand by experts to maintain these impressive mechanical properties. As this material has been developed to be very strong at high temperatures, care must be taken when hot working it. It can easily be manufactured by thermoforming, but it requires very powerful equipment to do so. However, the material can be cold formed by standard processes, which has a beneficial effect on the mechanical properties of the alloy, for example, by increasing the tensile strength as described above.

17-4PH is a precipitation-hardened stainless steel, also known as 630 stainless steel, which derives its name from the 17% chromium and 4% nickel in its composition. In addition, 17-4PH precipitation hardening stainless steel contains elements such as copper, vanadium, and molybdenum, which can be heat treated and cold-treated to obtain excellent mechanical properties and corrosion resistance.

17-4PH composition analysis

C: ≤0.07, low carbon content, which can reduce the hardness and strength of the material, but helps to improve the processing properties of the material.

Si: ≤1.00, the increase of silicon content helps to improve the strength and hardness of the material, but also reduces the plasticity and toughness of the material.

Mn:≤1.00, the increase of manganese content can improve the strength and hardness of the material, and help to improve the fatigue resistance.

P:≤0.035, too high phosphorus content will reduce the strength and toughness of the material, but in the appropriate range, phosphorus content can improve the processing properties of the material.

S:≤0.030, too high a sulfur content will reduce the toughness and ductility of the material, and may lead to brittle fracture.

Ni:3.00-5.00, nickel is an important element in stainless steel, and can improve the corrosion resistance and strength of the material.

Cr:15.0-17.5, chromium is the main alloying element in stainless steel, can improve the corrosion resistance and hardness of the material, and help to improve the high-temperature strength of the material.

Mo:-, the molybdenum content is 0, which may be one of the characteristics of this stainless steel.

Cu:3.00-5.00, with high copper content, improves the strength and hardness of the material and contributes to corrosion resistance.

Nb:0.15-0.45, the right amount of niobium content can improve the strength and hardness of the material, and help to improve the high-temperature performance of the material.

Others:-

ASTMS17400, ASTM A564 630, UNS630

P:≤0.040

Japan SUS630

Nb+Tao:0.15-0.45

Europe X5CrNiCuNb16-4

Cr:15.0-17.0

The tensile properties data of 17-4PH are as follows:

Tensile strength: approx. 1275 MPa

Yield strength: approx. 1160 MPa

Elongation: approx. 12%

Because of its excellent mechanical properties and corrosion resistance, 17-4PH is widely used in aerospace, medical devices, and marine engineering. In the future, the development trend of 17-4PH is mainly to improve its corrosion resistance, enhance its processing performance and reduce costs. In addition, with the development of material science, 17-4PH may be replaced by more advanced alloys.