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EN 10020:2000 is a European Standard that provides a framework for classifying and designating non-alloy steel grades. The standard ensures that non-alloy steel grades meet specific requirements for chemical composition and mechanical properties, ensuring consistent product quality. By understanding and applying EN 10020, manufacturers, engineers, and designers can ensure that their products meet the required standards for performance, safety, and reliability.

Since EN standards are adopted at the national level, you can purchase the PDF from any European national standards organization: en 10020 pdf

Steel is divided into three main groups based on the percentage of alloying elements: Non-alloy steels: EN 10020:2000 is a European Standard that provides

┌────────────────────────────────────────┐ │ EN 10020 │ │ Definition & Classification of Steel │ └───────────────────┬────────────────────┘ │ ┌────────────────────────────────┼────────────────────────────────┐ ▼ ▼ ▼ ┌────────────────┐ ┌────────────────┐ ┌────────────────┐ │ Non-Alloy │ │ Stainless │ │ Other Alloy │ │ Steels │ │ Steels │ │ Steels │ └───────┬────────┘ └───────┬────────┘ └───────┬────────┘ │ │ │ ┌─────┴────────┐ │ ┌─────┴────────┐ ▼ ▼ ▼ ▼ ▼ Non-Alloy Non-Alloy Stainless Alloy Alloy Quality Special Quality/ Quality Special Steels Steels Special Steels Steels Axis 1: Classification by Chemical Composition Since EN standards are adopted at the national

Steels that do not meet the definition of stainless steel, but have at least one alloying element exceeding the threshold limits specified for non-alloy steels. 2. Classification by Main Quality Classes

This European Standard defines the classification and designation of steels. It applies to all types of steels, including carbon, alloy, and stainless steels.

Also referred to as , these contain mostly iron and carbon. For a steel to be classified as non-alloy, the content of alloying elements must remain below specific limit values defined in the standard. Manganese (Mn): Typically limited to 1.65%. Silicon (Si): Limited to 0.50%.