• project information
  • employer National foulad Company
  • Project delivery date 1383/01/20
  • project name Micro-alloy anti-wear steel
  • Quality excellent

Plate and Piece Wear-resistant Microalloy Steel

The product is a microalloy steel cast and rolled with the company’s design and technology and approved for delivery to customers.

This steel is low-alloy and wear-resistant and is produced in 400HB to 600HB industrial types.

Its surface hardness depth is consistent, and it is highly weldable and mechanically strong.

It is widely-used in mines and cement and steel companies that mostly purchase Hardox plates from Sweden.

Product Technologies

The innovation in this steel's manufacturing is the use of B microalloy. Similar compositions of steel reduce surface to core hardness with average mechanical strength, but using microalloy improves structure and provides consistent surface to core hardness. Therefore, this steel is used in all equipment with abrasion wear. Another advantage is that using hard steel requires welding in specific conditions due to its composition analysis. However, this steel is easy to weld due to its metallographic structure resulting from the microalloy production, melting, cleaning, and forging technology. For the first time in Iran, this company produces hot-rolling equipment to manufacture these alloy plates, which represents an advantage for this company. Similar wear-resistant steel plates are imported from Sweden. However, due to their hardness, they increase secondary machining, perforation, and cutting costs. This company produces its own steel and carries out the secondary machining production operations to reach the intended hardness with heating. Parts made from this steel cost 20% less than foreign brands.

فولاد ضد سایش میکروآلیاژ

Product Application

  • These products are used in nail liners, bucket loaders, chutes, and other applications with possible abrasive wear
  • All mines, cement producers, and steel and foundry industries require these steels.
  • This company indigenizes this technology for the first time in Iran.
  • Mass producing these products will prevent the outflow of millions of dollars.
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Product Manufacturing Process

  • The manufacturing technology entails defining the range of elements to reach the requested hardness.
  • Slab or piece casting
  • Slab rolling to produce sheets
  • (For the first time in Iran, this company has produced hot rolling equipment to manufacture alloy sheets.)
  • Cutting and machining if necessary
  • Quenching and temper heating to reach hardness and mechanical specifications

Design and manufacturing process

  • This product is manufactured using the experimental microalloy technology.
  • To manufacture plate products and meet the customers’ needs, this company has produced suitable hot-rolling equipment according to its factory capacity. It has reached this milestone by studying and observing large rolling lines.
  • Acquiring the Manufacturing Technology and Process
  • Microalloy steel casting
  • Hot rolling
  • Cutting and machining
  • Heating
  • Final control

Product Testing

  • The tests were conducted in-house.
  • Quantometry test
  • Hardness test
  • Tensile test for mechanical strength in some cases

The product's mandatory standards

  • Requested volumetric hardness
  • Over 1000 MPA mechanical strength
  • Dimensional control according to the requested plan