Effect of Microstructure on Hydrogen Diffusion in Weld and API X52 Pipeline Steel Base Metals under Cathodic Protection

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Test condition</td><td class="align_center">Hardness</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">API X52-BM</td><td class="align_center">84 HRB</td></tr><tr><td class="align_left">API X52-WM</td><td class="align_center">80 HRB</td></tr><tr><td class="align_left">API X52-ABM</td><td class="align_center">67 HRB</td></tr><tr><td class="align_left">API X52-QBM</td><td class="align_center">24 HRB</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Measures hardness of the samples studied.

International Journal of Corrosion

tab4

Table 4

Table 4: Effect of Microstructure on Hydrogen Diffusion in Weld and API X52 Pipeline Steel Base Metals under Cathodic Protection 