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┌────────────────────────────────────────┐ │ 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

The purpose of EN 10020 is to unify the terminology and classification methods across Europe, ensuring that a steel grade classified as "non-alloy" or "alloy" in one country means the same in another. Why is the EN 10020 PDF Necessary?

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High-performance alloys, such as tool steels, bearing steels, or high-strength low-alloy (HSLA) steels. How to Find the EN 10020 PDF en 10020 pdf

: Defined as steels containing at least 10.5% Chromium and a maximum of 1.2% Carbon . These are further sub-divided based on their properties (corrosion resistance, heat resistance, etc.).

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Definitions for quality classes, which explain the difference between "quality" and "special" steels. 4. Practical Industry Applications Understanding EN 10020 is essential for: This public link is valid for 7 days

As of 2025, the current version of the standard is (published in February 2020). It supersedes the previous version, EN 10020:2000.

Steels that do not meet the definition of stainless steel but contain at least one element above the non-alloy threshold. Main Quality Classes

: Steels that do not meet the definition of stainless steel but have at least one alloying element exceeding the limit for non-alloy steel. Main Quality Classes particularly regarding grain size

The second major classification in EN 10020 divides steels into quality classes based on their intended application and property requirements.

: Separating steels into distinct compositional groups and assigning quality classes tied directly to their intended application capabilities. Understanding the Three Main Steel Classes

Grades requiring closer manufacturing control, particularly regarding grain size, formability, or surface finish.

This standard is essential for industries working with steel, as it provides a clear and concise way of designating and classifying steel grades, ensuring that materials meet specific requirements and are used appropriately.