Hi,
what are the likely microstructual effects that would be produced by heating a 5Cr/0.5Mo steel pipe to 700oC for several thousand hours? I am aware that the maximum operating temperature for this material is 650oC so would the extra temperature have a significnat effect? The heating...
When preparing a welded sample for hardness surveys we have normally used a surface grinder to prepare both faces of the sample to ensure a flat parallel surface. The working surface is then further prepared (120 - 240 - 320 - 800 - 1200 wet grit) prior to etching for the hardness survey...
As a long term user of Australian Standards I am curious to know if anyone outside Australia uses or applies these standards. U.S. standards (i.e. ASTM, SAE, ANSI, API) are extesnivly used here so I am interested in knowing if the reverse is the case anywhere.
The rapid screening test suggests an applied voltage of 20V. If the current density is achieved for the sample size does the voltage applied have any significant effect? or will any reasonable voltage less than 20V still achieve an acceptable result?
Any suggestions or thoughts would be...
