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: These require more care during production. They have better resistance to cracking and better grain size.
(designation systems) to provide a complete identification for a steel grade. www.mchip.net Accessing the PDF
Before you can group steel, you must know what steel actually is. EN 10020 says that steel is a material that is mostly made of iron. It must also meet these rules: It must have less than 2% carbon.
| Standard | Purpose | | :--- | :--- | | | System for designating steel names (symbolic names). | | EN 10027-2 | System for assigning steel numbers (material numbers, e.g., 1.4301). | | EN 10204 | Types of inspection documents for metallic products. | | EN 10079 | Definition of steel products (semi-finished, bars, wire, etc.). | | EN 10025 series | Hot-rolled structural steel (uses EN 10020 classification). |
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EN 10020 partitions all steel variants into three macro-categories based strictly on the mass percentage of their alloying elements. 1. Non-Alloy Steels (Carbon Steels)
You can get the official EN 10020 PDF from national standards bodies. You can buy it from BSI (British Standards Institution), DIN (German Institute for Standardization), or the official CEN website.
: Ensures consistent terminology between manufacturers, suppliers, and regulators. Composition Limits
The EN 10020 standard is a official document used in Europe. It sets the rules for defining and classifying steel grades. It ensures that everyone in the steel industry speaks the same language. The standard does two main things:
If the chemical composition of a steel equals or exceeds the limits defined for non-alloy steels (for one or more elements), it is classified as "other alloy steel." These are typically designed for higher strength, better toughness, or improved wear resistance. 3. Main Quality Classes (Clause 4)
: Simple non-alloy steels with no specific heat treatment requirements.