{"id":49246,"date":"2026-04-28T12:00:49","date_gmt":"2026-04-28T10:00:49","guid":{"rendered":"https:\/\/www.bonomiacciai.it\/?p=49246"},"modified":"2026-04-21T15:18:49","modified_gmt":"2026-04-21T13:18:49","slug":"steel-certificate-dew-en-10204","status":"publish","type":"post","link":"https:\/\/www.bonomiacciai.it\/en\/steel-certificate-dew-en-10204\/","title":{"rendered":"Inside a DEW steel certificate: how to read data and controls (EN 10204)"},"content":{"rendered":"
[vc_row el_class=”ba-intro-lead”][vc_column][vc_column_text css=””]After analyzing the differences between certificates according to EN 10204<\/a>, it is now time to move into a practical perspective.<\/p>\n

In this article, we will analyze a real steel certificate:
\n\ud83d\udc49 DEW certificate \u2013 1.2343 \u2013 Thermodur\u00ae 2343 Superclean<\/a>, thickness 115 mm<\/p>\n

The goal is not only to read the document, but to understand what the reported data actually represent and how they relate to steel quality.<\/p>\n

\ud83d\udc49 For a general overview of steel certificates:<\/p>\n

https:\/\/www.bonomiacciai.it\/il-certificato-di-analisi-e-controllo\/
\n<\/a>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_single_image image=”49225″ style=”vc_box_shadow” onclick=”img_link_large” css=”.vc_custom_1776693186475{border-radius: 15px !important;}”][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83e\uddfe Steel certificate: what we are looking at” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]\n

A steel certificate like this is the final result of a series of controls carried out throughout the entire production process, in compliance with EN 10204<\/strong>.<\/p>\n

At first glance, it may appear as a set of technical data.
\nIn reality, each section represents a specific level of verification.<\/p>\n

\ud83d\udc49 In this article, we highlight the main areas, which will be explored in detail in the next contents of the series.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83d\udd0d Main sections of a steel certificate” use_theme_fonts=”yes” css=””][vc_column_text css=””]Below is the complete certificate: scroll through the images to analyze each section.[\/vc_column_text]

\"\"<\/a><\/figure>
1. Steel grade, metallurgical and surface supply conditions\n2. Mother block \/ round bar dimensions<\/div><\/div><\/div>
\"\"<\/a><\/figure>
3. Heat number and production process\n4. Applicable specifications and standards\n5. Chemical composition\n6. Charpy impact test KV\n7. Charpy impact test KVW\n8. Grain size<\/div><\/div><\/div>
\"\"<\/a><\/figure>
9. Ultrasonic testing\n10. Declaration of absence of radioactivity<\/div><\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83e\uddea Chemical analysis in a steel certificate” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Here we find the chemical composition of the steel:<\/p>\n
    \n
  • Carbon (C)<\/li>\n
  • Silicon (Si)<\/li>\n
  • Manganese (Mn)<\/li>\n
  • Chromium (Cr)<\/li>\n
  • Molybdenum (Mo)<\/li>\n
  • Vanadium (V)<\/li>\n<\/ul>\n

    \u2714 Defines the identity of the material \u2714 Directly influences its characteristics<\/p>\n

    \ud83d\udc49 This will be the focus of an upcoming article:
    \n\u201cChemical analysis: the identity of steel\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83d\udd29 Steel hardness” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Indicates the material\u2019s resistance to deformation.<\/p>\n

    \u2714 fundamental parameter for processing and application
    \n\u2714 related to the delivery condition<\/p>\n

    \ud83d\udc49 Upcoming in-depth article:
    \n\u201cHardness: the resistance of the material\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83d\udca5 Impact toughness (Charpy test)” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Measures the steel\u2019s ability to absorb energy without breaking.<\/p>\n

    \u2714 essential for critical applications
    \n\u2714 depends on temperature and structure<\/p>\n

    \ud83d\udc49 Upcoming article:
    \n\u201cToughness: how steel reacts to impact\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83d\udd2c Grain size in a steel certificate” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Represents the internal structure of the material.<\/p>\n

    \u2714 influences strength and toughness
    \n\u2714 key metallurgical parameter<\/p>\n

    \ud83d\udc49 Upcoming article:
    \n\u201cGrain size: balance between strength and toughness\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83e\uddfc Steel cleanliness (inclusions)” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Evaluates the presence of non-metallic inclusions.<\/p>\n

    \u2714 directly impacts reliability and durability
    \n\u2714 essential for high-quality steels<\/p>\n

    \ud83d\udc49 Upcoming article:
    \n\u201cSteel cleanliness: inclusion control\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83d\udd0d Microstructure (metallography)” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Analysis of the internal structure through microscopy.<\/p>\n

    \u2714 allows verification of treatments and metallurgical quality<\/p>\n

    \ud83d\udc49 Upcoming article:
    \n\u201cMetallography: the invisible structure\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\ud83d\udce1 Ultrasonic testing” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Internal inspection of the material.<\/p>\n

    \u2714 detects non-visible defects
    \n\u2714 essential for safety<\/p>\n

    \ud83d\udc49 Upcoming article:
    \n\u201cUltrasonic testing: seeing inside steel\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column el_class=”ba-box”][vc_custom_heading text=”\u2622\ufe0f Radiometric control” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]Verifies the absence of radioactive contamination.<\/p>\n

    \u2714 fundamental requirement in many industrial sectors<\/p>\n

    \ud83d\udc49 Upcoming article:
    \n\u201cRadiometric control: safety at the core of the process\u201d<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”ba-box”][vc_column][vc_custom_heading text=”\ud83e\udde0 What a steel certificate really means” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]This certificate is not just a technical document.<\/p>\n

    \ud83d\udc49 It is the summary of:<\/p>\n

      \n
    • chemical controls<\/li>\n
    • mechanical tests<\/li>\n
    • metallographic verifications<\/li>\n
    • non-destructive testing<\/li>\n<\/ul>\n

      Every value reported is the result of a precise process.[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”ba-box”][vc_column][vc_custom_heading text=”\ud83d\udd04 The role of the certificate in steel quality” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]This article represents the central point of the series.<\/p>\n

      \ud83d\udc49 From here on, each content will focus on a single section of the certificate.<\/p>\n

      This will allow a deeper understanding of:<\/p>\n

        \n
      • how data are generated<\/li>\n
      • what they actually mean<\/li>\n
      • why they are essential for steel quality<\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”ba-box”][vc_column][vc_custom_heading text=”\ud83c\udfaf Conclusion: how to read a steel certificate” use_theme_fonts=”yes” css=””][vc_empty_space height=”16px”][vc_column_text css=””]\n
        \n

        A certificate like this DEW document is not just a sheet.<\/p>\n

        It is a map that tells everything that has been done on the material before delivery.<\/p>\n

        Understanding it means truly understanding steel quality.<\/p>\n<\/blockquote>\n[\/vc_column_text][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"

        [vc_row el_class=”ba-intro-lead”][vc_column][vc_column_text css=””]After analyzing the differences between certificates according to EN 10204, it is now time to move into a practical perspective. In this article, we will analyze a real steel certificate: \ud83d\udc49 DEW certificate \u2013 1.2343 \u2013 Thermodur\u00ae 2343 Superclean, thickness 115 mm The goal is not only to read the document, but to…<\/p>\n","protected":false},"author":1,"featured_media":49271,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2175,2946,2176,1720],"tags":[3002,2994,2995,2996,2997,2949,2980,1707,2490,3000,2009,2998,3001,2439,2999],"post_series":[],"class_list":["post-49246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-en","category-controlli","category-home-en","category-technical-contents","tag-3-1-certificate","tag-analisi-acciaio","tag-certificato-3-1-acciaio","tag-certificato-acciaio","tag-controlli-acciaio","tag-en-10204","tag-metallurgia-en","tag-metallurgy","tag-non-destructive-testing","tag-qualita-acciaio-en","tag-steel-certificate","tag-steel-inspection","tag-steel-quality","tag-steel-testing","entry","no-media"],"yoast_head":"\nCertificato acciaio DEW: come leggere dati e controlli (EN 10204)<\/title>\n<meta name=\"description\" content=\"Learn how to read a DEW steel certificate according to EN 10204. Discover chemical analysis, hardness, toughness and quality controls behind steel performance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bonomiacciai.it\/certificato-acciaio\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Inside a DEW steel certificate: how to read data and controls (EN 10204)\" \/>\n<meta property=\"og:description\" content=\"Learn how to read a DEW steel certificate according to EN 10204. 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