Work package 4 Reference materials in the test programme

6 Work package 4 Reference materials in the test programme 

The number of primary reference materials tested in the COTEST programme was limited to five. This limited number allowed the establishment of a test programme concentrating on an extensive investigation of the test parameters, which was necessary to ultimately to be able to define test standards which are able to produce results relevant to industry. The five primary reference materials were selected such that each one is representative of a specific class of high temperature materials. 

Ferritic 9- 12% Cr steels which are commonly used as construction materials in power plants and in the chemical and process industries 

Typical application temperatures range from about 500 to 750°C, and the estimated lifetime of components fabricated out of these materials are in most applications in the range of 100,000 h. As representative material the high strength 9% Cr (+ Mo, W) steel P91 was used which was also a reference material in the TESTCORR programme. 

Material Upper dwell temperature Environ- ment Long dwell testing Upper/I ower dwell time (h) Short dwell testing Upper/I ower dwell time (h)  

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