dear,
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P8 material can be used up to -195C without any impact testing...lests know why you conduct impact testing?
On Wednesday, June 8, 2022 at 8:22:15 AM UTC+3 Yael Nieto wrote:
I have a misgiving wiht QW-409.4ASME Section IX Ed 2021 describes:QW-409.4 A change from AC to DC, or vice versa; and in DC welding, a change from electrode negative (straight polarity) to electrode positive (reverse polarity), or vice versa. This variable does not apply to a WPS qualified for welding base metals that are assigned to P-No. 8, P-Nos. 21 through 26, and P-Nos. 41 through 49.I have a base metal P8-P8 WPS, so I know if the construction code requires impact testing for base metal(s) or weld metal, then the for the WPS the variable is supplementary essential but my base metal is P8, also aply ?
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