Benefits Of Using Hot Work Steel In High-temperature Applications

By Author: Deep
Total Articles: 3
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The importance of tool steels goes far beyond the common industrial uses. In fact, most of the objects that surround you contain some sort of tool steel. While there are different varieties of steel available for industrial purposes, hot work tool steel is gradually becoming one of the leading choices in various industries. The extensive spectrum of applications of hot-work tool steels makes it useful in diverse ways.

Why Hot Work Steel?

This variety of steel allows hot forms of work. This type of steel is made from both nonferrous metals and iron. It also has derivatives of the alloy at very high temperatures. This still has utilities in various procedures, such as:

• The casting of pressure die.
• Drop forming.
• Extrusion.
• Glass and tube manufacture.

Reasons Why Industries Prefer it

When utilised, the tools made from this variety of steel are subject to constant high temperatures. Also, it can accommodate fluctuations in the thermal loads, especially where the surface of the tool gets contact with the processing materials. Furthermore, when combined with the wear ...
... due to impact and abrasion, this variety of steel helps in resistance to thermal shock, as well as resistance to wear and tear, as well. So together, they offer high productivity and operational efficiency.

The Best Properties

The functionality of hot work steel is dependent on its chemical components, as well as the techniques applied during the production, as well as the heat treatment. The low carbon and high alloy property makes it have the following features:

• Strong resistance to any type of deformation at high working temperatures.
• Shock resistance.
• Wear and tear resistance even at high working temperatures.
• Resistance to deformation due to heat treatment.
• Good resistance to checking of heat.
• Better machinability even in the annealed condition.

Chromium Hot Work Steel

This group of steel contains chromium, along with molybdenum, tungsten, cobalt and vanadium. The low carbon and relatively low content of alloy make it a tough metal under normal working conditions. There are certain groups of hot work steel, such as H11, H12 and the like, that give maximum tonnage among die steels. However, one of the major advantages of using this variety of hot work tool steel is its capability to resist exposure to temperatures as high as 540°C. But simultaneously, it is a ductile and tough tool material with a high tensile strength.

Tungsten Hot Work Steel

This variety of steel has carbon, chromium, tungsten and, in some cases, vanadium. The high content of alloy in this steel group enhances their resistance to very high temperatures. However, they are relatively brittle. The steels under this group get the capacity to reduce thermal shock, as well as its toughness, by lessening the content of carbon. To make it, however, it becomes necessary to adjust the quantity of vanadium and tungsten. This adjusted composition is the finest option for red hardness and hardness.

Molybdenum Hot Work Steels

As the name suggests, the main alloying element of the steels of this group is molybdenum, along with vanadium, chromium, tungsten and different amounts of carbon. Quite like different types of high-speed steel, the molybdenum variety of hot work tool steel has similar properties to its tungsten counterpart. The biggest advantage of using this steel, as compared to other groups, is its better resistance to checking heat. Commonly, all varieties of steels high in molybdenum are necessary to take some care during heat checking. This can avoid decarburisation.