What tensile strength is required for filler metal classification when welding ASTM A706 grade 60 reinforcing steel?

When welding ASTM A706 grade 60 reinforcing steel, the required tensile strength for the filler metal classification is indeed 70 ksi. This requirement ensures that the filler metal used has sufficient strength to match or exceed the properties of the steel being welded, providing adequate performance under load conditions.

ASTM A706 grade 60 reinforcing steel specifies a minimum yield strength of 60 ksi and a minimum tensile strength of 80 ksi. Considering that the filler metal must not only complement the properties of the base material but also provide adequate ductility and toughness, it is important to select a filler metal that meets the specific tensile strength requirements.

Therefore, the correct filler metal classification aligns with the tensile strength requirement of 70 ksi, ensuring that the weld joint maintains the integrity and structural capabilities as intended. This is crucial for applications in construction where safety and performance are paramount.