As has been said, the physical prop

As has been said, the physical properties of steel can be varied over a wide range by control of its content of carbon and alloying metal, and by heat treatment. For example, as the carbon content is increased the tenacity and hardness of the steel is increased, with a corresponding reduction in its ductility and toughness. Similarity, the addition of nickel increases the material's tensile strength, yield point and hardness, with a corresponding decrease in its ductility. Steel containing a high proportion of nickel have excellent corrosion-resisting qualities.

The addition of both nickel and chromium, to form nickel-chrome steels, ensures considerable hardening properties, with suitable heat treatment, with a corresponding tendency to brittleness. The addition of molybdenum and tungsten also increases the hardness and strength of the steel. Considerable research has been done, and is continuing, into the production of steels suitable for particular applications.

In broad terms, however, steel is a ductile material of high tensile strength, the ultimate tensile stress being of the order of 750-1500 N. Its hardness and machinability vary widely with composition and heat treatment. Steel is an electrical conductor, having a resistivity of about 20 m, and is also a magnetic material. Its resistivity and permeability may vary considerably, however, for different compositions.

Steel is used, for example, in structures where its high strength and resistance to impact loads may be of importance, and for tools for machining purposes. The so-called 'high-speed' steels retain their hardness to a marked degree even at higher temperatures, so that cutting tools of this steel will retain a sharp cutting edge under conditions of high-speed machining and at high temperatures. 'High-tensile' steels have a high value of ultimate tensile stress and are used to make springs or to sustain high-tensile loads.

ผลลัพธ์ (อังกฤษ) 2:

As has been said, the physical properties of steel can be varied over a wide range by control of its content of carbon and alloying metal, and by heat treatment. For example, as the carbon content is increased the tenacity and hardness of the steel is increased, with a corresponding reduction in its ductility and toughness. Similarity, the addition of nickel increases the material's tensile strength, yield point and hardness, with a corresponding decrease in its ductility. Steel containing a High Proportion of Nickel Have excellent corrosion-resisting qualities. The addition of Both Nickel and Chromium, Nickel-Chrome Steels to Form, ensures considerable quenching Properties, with suitable Heat Treatment, with a corresponding Tendency to Brittleness. The addition of molybdenum and tungsten also increases the hardness and strength of the steel. Considerable Research has been done, and is continuing, Into The production of Steels suitable for particular Applications. In Broad terms, however, is a ductile Steel Material of High Tensile strength, The Ultimate Tensile Stress being of The Order of N. 750-1500 Its hardness and machinability vary widely with composition and heat treatment. Steel is an electrical conductor, having a resistivity of about 20 m, and is also a magnetic material. ITS Resistivity and permeability May Vary Considerably, however, for different compositions. Steel is Used, for example, in Structures Where strength and resistance to ITS High Impact May be loads of Importance, and for Tools for machining purposes. The so-called 'high-speed' steels retain their hardness to a marked degree even at higher temperatures, so that cutting tools of this steel will retain a sharp cutting edge under conditions of high-speed machining and at high temperatures. 'High-tensile' steels have a high value of ultimate tensile stress and are used to make springs or to sustain high-tensile loads.

ผลลัพธ์ (อังกฤษ) 3:

As has been said the physical, properties of steel can be varied over a wide range by control of its content of carbon. And alloying metal and by, heat treatment. For example as the, carbon content is increased the tenacity and hardness of. The steel is increased with a, corresponding reduction in its ductility and, Similarity toughness.The addition of nickel increases the material 's, tensile strength yield point and hardness with a, corresponding decrease. In its ductility. Steel containing a high proportion of nickel have excellent corrosion-resisting qualities.

The addition. Of both nickel, and chromium to form nickel-chrome steels ensures considerable, hardening properties with suitable, heat. Treatment.With a corresponding tendency to brittleness. The addition of molybdenum and tungsten also increases the hardness and strength. Of the steel. Considerable research has, been done and is continuing into the, production of steels suitable for particular. Applications.

In, broad terms however steel is, a ductile material of high, tensile strengthThe ultimate tensile stress being of the order of 750-1500 N. Its hardness and machinability vary widely with composition. And heat treatment. Steel is an electrical conductor having a, resistivity of about, 20 m and is also a magnetic material.? Its resistivity and permeability may, vary considerably however for different, compositions.

Steel is used for example,,In structures where its high strength and resistance to impact loads may be of importance and for, tools for machining. Purposes. The so-called 'high-speed' steels retain their hardness to a marked degree even at higher temperatures so that,, Cutting tools of this steel will retain a sharp cutting edge under conditions of high-speed machining and at high temperatures.'High-tensile' steels have a high value of ultimate tensile stress and are used to make springs or to sustain high-tensile. Loads.