ISO 11971:2020

International Standard   Current Edition · Approved on 13 January 2020

Steel and iron castings — Visual testing of surface quality

ISO 11971:2020 Files

English 5 Pages
Current Edition
20.29 BHD

ISO 11971:2020 Scope

1.1 This document covers the acceptance criteria for the visual testing of the surface of steel and iron castings.

1.2 Acceptance levels utilize Bureau de Normalisation des Industries de la Fonderie (BNIF) and Steel Castings Research and Trade Association (SCRATA) or Casting Technology International (CTI) reference comparators for the visual determination of surface roughness and surface discontinuities described as follows:

— surface roughness;

— thermal dressing;

— mechanical dressing;

— non-metallic inclusions;

— gas porosity;

— fusion discontinuities;

— expansion discontinuities;

— metal inserts.

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