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High-speed steel. The story is interesting.

High-speed steel. The story is interesting.

Are you interested in the characteristics of high-speed steel in the Astm system? Supplier Avlob offers to buy high-speed steel at a bargain price. The supplier guarantees the timely delivery of products to any address in Europe or abroad. Regular customers receive a discount discount. The price is the best in this segment.

History. The middle of the XIX century

Constantly increasing cutting speed of metal negatively affects the resistance of cutters and other metalworking tools. Experienced in this direction, the English researcher R. Müshett established that when adding an increased amount of tungsten to conventional tool steel, it acquires the so-called reddishness-resistance with increased abrasive effects, which is not lost when the contact temperatures increase to 250−300 ° C.

The second half of the XIX century

In the second half of the 19th century, several grades of such steels were created by Muyette, whose common properties were the presence of an increased amount of carbon (up to 2%), Manganese and silicon (up to 1.5%), and tungsten — from 5 to 12%. These steels were quenched in the air, and showed high resistance, but subsequently fragilely destroyed. At the same time, the cause of this destruction was established — the coarse-grained structure, which prevented the preliminary forging of blanks. This defect was eliminated by the American metal expert Taylor, who reduced the percentage of sulfur in the steels of Muyette, and also increased the temperature of their hardening.

XX century

Alloys equivalent in properties to modern high-speed steels P6, P9, P12 and P18 appeared at the beginning of the 20th century. The deficit of tungsten has forced researchers to look for an alternative to this metal. The non-wolfram high-speed grades P0M5F1 and P0M3F3 were developed. Features of the structure and properties of such steels distinguish them from the total number of tool steels. Considering the number of highly alloyed, these steels have been successfully used as blanks for tool production and for machining and for pressure treatment. The supplier Avlob offers to buy stamp steel at a bargain price. The price is the best in this segment of rental.

Technical characteristics of high-speed steels

  • Increased content of tungsten, which increases durability in conditions of intense abrasion and sufficiently high contact temperatures;
  • The minimum amount of bound oxygen, which increases the mechanical strength;
  • The presence of cobalt, which increases the so-called «hot hardness»;
  • Mandatory pre-annealing before quenching, as a result of which the structure of high-speed steels becomes more fine-grained, and their plasticity and hardness increase.

The abundance of alloying elements gives high-speed steels also enhanced corrosion resistance properties.

Delivery, price

Are you interested in the characteristics of high-speed steel in the Astm system? Buy high-speed steel at an affordable price from the supplier Avgob today. The price is formed on the basis of European production standards. Supplier Avlob offers to buy stamped steel alloys at the optimal price in bulk or at retail.