Community Research and Development Information Service - CORDIS


The European Standard for verification of Charpy impact machines, EN 10045-2, requires indirect verification using reference test pieces from BCR (Bureau Communautaire de Reference) or from a national authority traceable to BCR. The European Commission supports the CEN standardization of impact testing through the BCR reference materials programme, with verification specimens with impact strengths in the range 30-160 J. About 6000 specimens per year are distributed to European users.

The assignment of certified values is achieved using one reference machine, by comparison of specimen batches with master sets, which in turn, are certified by a consortium of European laboratories. Uncertainty statements include contributions from batch heterogeneity, the uncertainty of master batch mean values and measurement precision at the time of comparison. Homogeneity is a critical property of the steel and batch size and is limited by the temperature uniformity of heat treatment ovens. .

Additional information

Authors: INGELBRECHT C, IRMM, JRC Geel (BE);PAUWELS J, IRMM, JRC Geel (BE);GYPPAZ D, Cogne Acciai Speciali, Aosta (IT)
Bibliographic Reference: An oral report given at: The Charpy Centenary Conference. Held in: Poitiers (FR) 2-5 October 2001
Record Number: 200113899 / Last updated on: 2001-10-22
Original language: en
Available languages: en