Does Welding Weaken Metal? Strength and Heat Effects Explained
Last Updated: January 2026 Welding permanently joins metal by applying heat, pressure, or both. Because heat alters metal structure, a common concern is whether welding weakens the base material or reduces overall strength. Based on guidance from the American Welding Society (AWS), manufacturer metallurgical documentation, and industry standards, welding does not inherently weaken metal—but weld…