Can Q345R steel plates be welded with J427 electrodes?
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This is the answer I found online: J427 is a low-hydrogen sodium-coated carbon steel welding electrode that can be used with a direct current power supply for welding in all positions; the weld metal possesses excellent mechanical properties and crack resistance. Purpose: Used for welding important carbon steels and low-alloy steels. Q345R belongs to the category of medium-carbon carbon steels and is weldable. I hope my answer can help you solve your problem! Another type, 506.507, belongs to the alkaline welding electrodes; these can be used when high strength in the weld is required. I’m not quite clear about this answer – how are boilers and containers classified? My Q345R steel plates are used for manufacturing the inner cylinder of reaction vessels; do they belong to boiler steel? I hope everyone can help answer this.
Q345R belongs to the steel grades used for boiler and pressure vessels
It can be used; we have conducted weld qualification tests using J427 for 16MnR
Under normal circumstances, J507 welding rod should be used to ensure that the weld has the same strength as the base material. If J427 is used, consideration must be given to the compatibility between weld strength and the base material, as well as the requirements of the structural design.