: These are basic steels. They do not need special heat treatment. They are used for simple parts and structural builds.
These grades feature higher purity than quality steels, meaning lower levels of non-metallic inclusions, phosphorus, and sulfur. They are designed for heat treatment (e.g., quenching and tempering) and exhibit precise mechanical property responses. Main Quality Classes for Alloy Steels
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
Sites claiming "EN 10020 PDF free download" are almost always: en 10020 pdf
The standard is widely used in various industries, including:
The EN 10020 standard classifies steel grades based on two primary criteria:
You can use this for documentation, a website, or a technical reference sheet. : These are basic steels
Steels with superior purity, high toughness, or specific chemical, physical, or technical properties.
While a limited number of chromium steels may contain more than 2% carbon, 2% remains the general dividing line between steel and cast iron. The Classification Framework of EN 10020
Before classifying different types of steel, EN 10020 outlines the boundary between steel and other iron-based materials. According to the standard, steel is a material in which the mass percentage of iron is greater than that of any other single element, and the carbon content is generally less than 2%. These grades feature higher purity than quality steels,
Using standard definitions eliminates ambiguity between steel mills, stockists, and end manufacturing plants, preventing costly ordering errors. How to Access a Legitimate EN 10020 PDF
The standard serves a dual purpose. First, it acts as a dictionary, providing strict definitions for terms like "steel," "grade," and "chemical composition." Second, it acts as a map, categorizing steels into three main groups based on their chemical properties and intended application. For engineers, procurement officers, and metallurgists, accessing the EN 10020 PDF is often the first step in verifying material certifications or selecting the appropriate material for a specific application.
If the carbon content exceeds 2.06%, the material is classified as cast iron (not covered by this standard).