Thermal Treatment

Bekaert provides thermal treatment for steel products to alter material properties and make the steel more applicable for your application. Our thermal treatment services include annealing, hardening and tempering.


Annealing is a heat treatment that has various effects on steel's properties. At Bekaert, we work with quality equipment and have tight tolerance on temperature control in our furnaces— as little as 2 degrees Fahrenheit.

The different kinds of annealing include:

  • Complete. During this process, manufacturers heat steel to 30 degrees Celsius above their transformative temperature and allow the material to cool naturally. This method reduces internal stresses, improves machine workability and creates a fine-grained, microcrystalline structure.

  • Isothermal. While complete annealing allows the steel to cool, isothermal annealing forcibly cools the material to its lower critical temperature, the degree at which the hold period begins. At that point, the steel grain becomes pearlite and cools slowly.

  • Spherical. This annealing process produces globular pearlite by holding the material near the critical temperature and then allowing the material to slowly cool. An even distribution of globular pearlite is created in the material that helps with cold-forming.

  • Recrystallization. This intermediate annealing heats steel until its grain becomes uniform. It neutralizes process hardening and residual stress so that multistage cold-working can happen without risk.

Our controlled atmospheric environment prevents oxidation and decarburization and ensures consistent results. The annealing process creates a softer metal that's easier to shape for your intended projects. We choose the process type based on your specifications and preferred results.

During the process, we use an even heat distribution and tight temperature control. Our annealed steel products have a bright surface finish that exceeds your specifications.

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Hardening and Tempering

Hardening and tempering is a two-step thermal process that strengthens steel for a range of applications. We heat steel to a given transformation temperature and then quickly and uniformly quench the material to provide a uniform microstructure. The material is then tempered to provide the desired tensile and ductility required for your application.

Our hardening and tempering services are valuable to specialty wire applications, such as flexible pipes, rake tines and piston rings. We also provide packaging needs based on project specifications, including:

  • Cut-to-length
  • Coils on reels
  • Coils on cardboard cores

With our advanced process control system, we offer consistent mechanical and physical properties and uniform microstructures for all thermal-treated steel.

Why Choose Bekaert?

At Bekaert, our experts can perform annealing and other processes, including cold-rolling and cold-drawing. Our team has extensive knowledge regarding the thermal treatments we use for steel. This experience lets our representatives recommend the best process and services for your applications.

Bekaert is the world's largest independent manufacturer of drawn and shaped steel wire products. Despite our global presence, we prioritize our relationships with individual clients. Our company offers several services under one roof, and our global experience makes us an excellent development partner. Our comprehensive processes help your company save manufacturing costs, minimize waste and reduce lead times. We work to meet your specifications and exceed your expectations with every order.

Call +1 330-683-5060 or contact us to place an order or learn more about our annealed steel wire.