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Conseils généraux
Distance minimale entre les points d'essai et par rapport au bord de l'échantillon
Les différentes normes consacrées aux différentes méthodes d’essai définissent des distances minimales entre les points d’essai (empreintes) ainsi que par rapport au bord de l'échantillon. Ces distances minimales servent à éviter que les résultats de dureté ne soient faussés par la déformation de la structure du matériau.
Pour les méthodes Rockwell (selon ISO 6508), Brinell (selon ISO 6506), Vickers (selon ISO 6507) et Knoop (selon ISO 4545), les distances minimales sont indiquées dans les graphiques ci-dessous.
![](/static_processed/6bfeef56df6c2d55554cb9f0fd4cb70d/eindruck-_und_kantenabstand_brinell_und_rockwell.jpg?{"image":"https://api.emcotest.com/static/haerte-wissen/Eindruck-_und_Kantenabstand_Brinell_und_Rockwell.jpg","edits":{"resize":{"width":167,"fit":"cover"}},"outputFormat":{"format":"webp"}})
![](/static_processed/6adb284981e0e1ebc24371f862a74416/eindruck-und_kantenabstand_vickers.jpg?{"image":"https://api.emcotest.com/static/haerte-wissen/Eindruck-und_Kantenabstand_Vickers.jpg","edits":{"resize":{"width":167,"fit":"cover"}},"outputFormat":{"format":"webp"}})
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