If a steel grade exceeds the chemical thresholds specified for non-alloy steels but does not meet the exact definition of stainless steel, it is classified as an "Other Alloy Steel." This category includes tool steels, high-strength low-alloy (HSLA) steels, and engineering steels alloyed with molybdenum, vanadium, or boron to enhance mechanical properties like hardness and tensile strength. 2. Classification by Main Quality Classes
Before deep-diving into specific alloy boundaries, the BS EN 10020:2000 standard explicitly defines what constitutes a "steel" material:
: This group includes stainless steels, high-speed tool steels, and engineering steels. They have precise chemical mixes and excellent strength. Why Do You Need the EN 10020 PDF? en 10020 pdf
Based on the material's intended application, structural properties, and manufacturing care. 1. Classification by Chemical Composition
In the world of metallurgy and industrial manufacturing, standards are the invisible scaffolding that holds global trade together. Among these, stands as a critical document. If you have recently searched for an "EN 10020 PDF," you are likely an engineer, quality manager, procurement specialist, or student trying to decode the definitions and classification of steel grades. If a steel grade exceeds the chemical thresholds
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The document functions primarily to divide steel into classes based on two criteria: They have precise chemical mixes and excellent strength
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
Beyond broad chemical makeup, the standard takes the classification process a step further by breaking these three groups down into specific . EN 10020 divides these into two primary tiers: Quality Steels
: Often used for structural purposes where specific mechanical properties are required but not high-performance heat treatment.