What is the general implication of arc strikes on the final weld?

Arc strikes can significantly compromise the integrity of a weld joint. When an arc strike occurs, it results in localized overheating of the base material, which can alter its mechanical properties. This overheating can lead to issues such as metallurgical changes in the heat-affected zone, creating areas that may be more prone to cracking or reduced toughness. Consequently, this can weaken the overall structure of the weld due to the disruption of the intended properties of the base materials and the weld metal.

In contrast, while some options might suggest potential benefits or neutrality of arc strikes, they fail to consider the detrimental effects that these unwelcome marks can create in the weld's structural integrity and performance during service. Understanding the risks associated with arc strikes emphasizes the importance of maintaining proper welding techniques to prevent them, ultimately ensuring stronger and more reliable welds.