What effects does flame cutting have on the strength of the steel?

Flame cutting can affect the strength of steel by introducing thermal stresses and altering its microstructure. The high temperatures involved can lead to grain coarsening in the heat-affected zone (HAZ), potentially reducing ductility and toughness. Additionally, rapid cooling after cutting can cause residual stresses, which may compromise the material's overall integrity. Proper post-cutting heat treatment may be necessary to mitigate these effects and restore strength.