Copper tubes are widely used in many industries due to their excellent durability, corrosion resistance, and thermal and electrical conductivity. Copper tubes can be divided

Top 10 usesof nickel

On August 12 and 13, 2024, the Canadian International Trade Tribunal (CITT) and the Canada Border Services Agency (CBSA) respectively issued announcements to launch the

2 chemicalproperties of nickel

According to Gerber on September 10, 2024, the EU steel lobbying group filed a lawsuit against the anti-circumvention investigation results against stainless steel from Indonesia,

High-speed steel is a tool steel with high hardness, high wear resistance, and high heat resistance. Tungsten steel (tungsten carbide) has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance.

High-speed steel: It is mainly used to make various high-efficiency and high-precision cutting tools, such as drills, milling cutters and turning tools. It is also used in applications that need to maintain hardness at high temperatures, such as molds and punches.

NickelChemical formula

Chemicalproperties of nickel

Tungsten Steel: The main component is tungsten (W), in addition to carbon (C) and other alloying elements such as cobalt (Co), molybdenum (Mo), and chromium (Cr). Tungsten steel, also often called cemented carbide, is a composite material composed of tungsten and carbide.

There are certain differences between high-speed steel and tungsten steel in terms of definition, physical and chemical properties, production process, and use. The cutting speed and life of tools made from the latter are higher than those made from the former.

High-speed steel DM06 hardness HRC6266. High-speed steel DM06 tools can cut steel at a speed of 30 meters per second, and its efficiency is several times higher than the carbon tool steel and alloy tool steel used in the past. The speed and quality of high-speed steel can be used to calculate the hardness of HSS DM06 HRC6266.

Tungsten steel: It has extremely high hardness and wear resistance. It is harder and more wear-resistant than high-speed steel. It is suitable for applications that require extremely high hardness and wear resistance.

High-speed steel: It has higher hardness and wear resistance, but is not as good as tungsten steel. It is suitable for cutting tools that need to maintain hardness at high temperatures.

Where isnickelfound

Usesof nickel

Nickel is chemically less reactive than iron and is more resistant to acids and moisture. It reacts with organic acids only after a long exposure. In hydrochloric and sulfuric acids dissolves slowly, in dilute nitric acid - easily, and concentrated nitric acid passivates nickel, though to a lesser extent than Fe. Acid salts of nickel are bivalent. Almost all of them are highly soluble in water, where they give an acidic reaction. Only the salts of carbonic and phosphoric acids are poorly soluble. NiSO4 sulfate crystallizes as emerald green crystals of nickel vitriol NiSO4 x7H2 O. When calcined to 800 °C, almost all of the nickel salts decompose. This metal is resistant to strong alkalis, but dissolves in ammonia solution in the presence of (NH4)2 CO3 with the formation of intense blue solutions. Selective ammonia formation is used in the hydrometallurgical extraction of nickel from ores.

Who discoverednickel

In addition to tungsten steel materials, tools can also be made from high-speed steel materials. However, due to the different chemical composition and production methods of tungsten steel and high-speed steel, the quality of the prepared tools is slightly different.

Tungsten steel: It is often used to make tools that require extremely high hardness and wear resistance, such as knives, drills, molds, cutting tools, and abrasives. It is also used to make carbide blades and wear-resistant parts.

In terms of chemical activity, this metal stands between the noble metals and iron. In compounds, Ni is most often divalent. In the form of powder actively absorbs H2, CO, but when saturated with gases, loses its mechanical properties. When heated up to 500°C, it reacts with oxygen. Finely dispersed powder is pyrophoric - it is self-igniting in air. NiO oxide is greenish crystals, insoluble in water (the mineral bunsenite). When burned in sulfuric vapor, it forms sulfide Ni3 S2. Monosulfide NiS is made by heating NiO with sulfur. Nitrogen does not interact with this metal up to 1400 °C. Nitride Ni3 N is formed by heating powder Ni with nitrogen (t ° 445 ° C). In red-hot phosphorus vapor forms phosphide Ni3 P2. With arsenic, the compoundsNi5 As2, Ni3 As (the mineral maucherite) and NiAs. The NiAs lattice has a hexagonal arrangement of arsenic atoms, with Ni atoms squeezed in between. This structure is typical of many metallides. The unstable Ni3 C carbide is formed after long (hundreds of hours) carburizing (carburizing) of powder Ni in a CO atmosphere at 300 °C. The molten nickel easily dissolves carbon, which is released as graphite when cooled. With the loss of graphite, ductility decreases.

The chemical properties change with temperature. When heated, nickel reacts with SO2, NH4 and nitrogen oxides and, as a finely ground powder, with CO to form carbonyl Ni (CO)4. Thermal dissociation of the carbonyl produces the purest nickel.

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3 chemicalproperties of nickel

Tungsten steel is the hardest, followed by carbon steel and then white steel. White steel is also called high-speed steel, but now there is 3A white steel which is very hard. Carbon steel has high hardness, tungsten steel is heat-resistant, and manganese steel has high toughness.

High-Speed Steel (HSS): Contains tungsten (W), molybdenum (Mo), chromium (Cr), vanadium (V), and carbon (C). The high content of tungsten or molybdenum enables it to maintain hardness at high temperatures.

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Tungsten steel: Due to its extremely high hardness, it is difficult to process and requires the use of special equipment and technology.High-speed steel: Although it has high hardness, it has good machinability and can be processed by conventional processing methods.

Nickel is a ductile and ductile metal that can be rolled into a thin foil. Tensile strength 40-50 kgf/mm2, tensile strength 8 kgf/mm2, yield strength 12 kgf/mm2; relative elongation 40%; modulus of normal elasticity 205 Gn/m2; Brinell hardness 600-800 Mn/m2. From absolute zero to 631°K, ferromagnetic physical properties are retained. Ferromagnetism is due to the structure of the outer electron shells. For the same reason, alloys and a number of nickel derivatives (oxides, and compounds with halogens.) are magnetically ordered with a ferro- and rarely a ferrimagnetic structure. Under normal conditions, the crystal lattice has a β-structure with a face-centered cubic structure (a = 3.5236. But after cathodic sputtering in an H2 atmosphere, the lattice acquires a dense hexagonal structure (a = 2.65 [pic], c = 4.32 [pic]), which converts to a cubic structure above t° 200 °C. Nickel with a cubic lattice has a specific gravity of 8.9 g/cm³, melting point 1453 °C; boiling point 3000 °C; specific heat capacity (t° 20 °C), melting point 20 °C. Heat capacity (t° 20 °C) 0.44 kJ/(kg-K); temperature coefficient of linear expansion 13.3x10-6 (0-100 °C); thermal conductivity at 25 °C 90.1 vml (m-K)[0.215 cal/(cm-sec-oC)].