(the exact mass percentage of alloying elements).
┌──────────────────────────┐ │ EN 10020 Steel │ └────────────┬─────────────┘ │ ┌────────────────────────┼────────────────────────┐ ▼ ▼ ▼ ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │ Non-Alloy Steel │ │ Stainless Steel │ │ Alloy Steel │ │ (Below Limits) │ │ (≥10.5% Cr, │ │ (Exceeds Limits,│ └─────────────────┘ │ ≤1.2% C) │ │ Non-Stainless) │ └─────────────────┘ └─────────────────┘ Non-Alloy Steels
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 en 10020 pdf
If elements like Silicon (Si), Manganese (Mn), Copper (Cu), Nickel (Ni), or Chromium (Cr) are below specific, low percentages (generally less than 0.50-1.00% depending on the element), the steel is classified as non-alloy. B. Stainless Steel
The primary objective of EN 10020 is to eliminate ambiguity in technical documentation, trade agreements, and manufacturing specifications across Europe and globally. By establishing strict chemical and quality boundaries, it allows supply chain partners to speak the same technical language. Core Definitions: Steel vs. Other Ferrous Metals (the exact mass percentage of alloying elements)
2. Chemical Classification: Non-Alloy vs. Stainless vs. Alloy Steels
is a material in which iron (Fe) is the predominant element, containing a carbon (C) content generally lower than 2.0% by weight, and containing other elements. A limited number of chromium (Cr) steels may contain more than 2.0% of carbon, but 2.0% remains the conventional separating line between steel and cast iron. Core Definitions: Steel vs
The standard primarily divides steels based on their chemical composition and quality characteristics: EN 10020:2000 - Definition & Classification of Steel