BS EN ISO 3452-3:2013 pdf download.Non-destructive testing —Penetrant testing Part 3: Reference test blocks.
The reference blocks are to be used in accordance with part 1 of this International Standard.
2 Normative references
The following referenced documents, in whole or in part, are normatively referenced in this documentand are indispensable for its application.For dated references, only the edition cited applies.For undatedreferences, the latest edition of the referenced document (including any amendments) applies.
EN 10088-1, Stainless steels —Part 1: List of standard stainless steels
EN 10204, Metallic products — Types of inspection documents
ISO 4957,Tool steels
ISO 10474,Steel and steel products — Inspection documentsISO 15510, Stainless steels —Chemical composition
3 Description of reference blocks
The Type 1 reference block consists of a set of four nickel-chrome plated panels with 10 um, 20 um,30 um and 50 um thickness of plating, respectively.The 10 um, 20 um, 30 um and 50 um panels canbe used for determination of the sensitivity of fluorescent penetrant systems. The sensitivity of colourcontrast penetrant systems is determined using the 30 um and 50 um panels.
The Type 2 reference block consists of a single panel of which one half has been plated with electrolessnickel and a thin layer of chromium and the other half prepared to achieve areas of specific roughness.The plated side exhibits five star-shaped discontinuities.
4 Type 1 reference block design and dimensions
The Type 1 panels are rectangular in shape with typical dimensions of 35 mm x 100 mm x 2 mm (seeFigure 1).Each panel consists of a uniform layer of nickel-chromium plated on to a brass base, thethickness of nickel-chromium being 10 um, 20 um,30 um and 50 um respectively.Transverse cracks aremade in each panel by stretching the panels in the longitudinal direction.The width to depth ratio ofeach crack should be approximately 1:20.
