The Normalization of Steel

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What is Normalizing?

Giving the steel a uniform and fine-grained structure is the intended purpose of the normalization process. Normalizing is used to confirm a predictable microstructure and guarantee of the material’s mechanical properties.

What does the Process of Normalizing Steel Consist of?

Once the steel is cooled in its “As-Rolled” state the material may require further heat treatment to achieve the desired mechanical properties.

Gr 70 Normalized Steel Plate

Gr 70 Normalized Steel Plate. Image credit: Masteel

Normalizing begins by heating the as-rolled plate up to 800-900°C, depending on chemical analysis, and holding the steel at this temperature for a set time ahead of being cooled in still air. The process refines the grain size, improves the mechanical properties and relieves internal stresses.

Can all Grades of Steel be Normalized?

In theory all grades of steel can undergo normalizing. However, some grades of steel must be normalized in the scope of the material specification, whilst other material specifications allow normalizing to be at the discretion of the manufacturer or the purchaser.

Pressure vessel steel grades which  typically undergo normalizing are:

  • ASTM/ASME A/SA516 Gr 70
  • ASTM/ASME A/SA516 Gr 60
  • EN10028 P355NL1
  • BS 1501-224-490B

There are alternative heat treatments that can be applied to steel after rolling:

  • Thermomechanically rolled (TMR) steel
  • Quenched and Tempered (Q&T) steel
  • Normalized-rolled

Will Normalizing Steel have an Impact on the Cost?

Normalizing is an additional process and as such will have an impact on the cost of steel. Actual cost would have to be confirmed with the manufacturer at the time of enquiry.

Do you have a requirement for normalized steel? Get a quote here for normalized steel.

About Masteel UK Ltd

Masteel UK Ltd are a global steel supply and stockholding company, supplying the engineering, power generation, petrochemical, oil & gas and nuclear industries.

Partnerships integrating the resources of the worlds most technically advanced steel mills enable Masteel to provide a single competitive source for the distribution of steel products worldwide, allowing Masteel the flexibility to supply both mill sourced and ex-stock material such as

  • Pressure vessel steel plate
  • Boiler steel plate
  • Chrome moly steel
  • Offshore Steel
  • Stainless steel
  • Nickel alloy
  • Titanium

Our "Fast Track" option allows for material to be produced according to your contractual requirements in around 5 weeks, keeping your projects on time and on budget.

Masteel sevice industries such as:

  • Engineering
  • Oil and gas
  • Offshore Steel
  • Aerospace
  • Power generation
  • Pharmaceutical
  • Nuclear

Masteel also provide services including:

  • Project management
  • Quality
  • Shipping
  • Stockholding
  • Processing

This information has been sourced, reviewed and adapted from materials provided by Masteel UK Ltd.

For more information on this source, please visit Masteel UK Ltd.


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