I do not have a chart and maybe someone here can provide more specific info., but as you have probably already looked into, the API 1104 19th Ed. and newer has appendix B addressing this issue. In the footnotes there is reference to:
Development of Simplified Weld Cooling Rate Models for In-
Service Gas Pipelines”, PRCI Catalog No. L51660
“Thermal Analysis Model for Hot-Tap Welding Version 4.2,” PRCI Catalog
No. L51837.