The ASTM A709 is the Standard Specification for Structural Steel for Bridges and encompasses carbon, high-strength low-alloy, and quenched and tempered alloy steels used as structural plates in the construction of bridges. BBN offers the following five grades of A709; 36, 50, 50W, HPS 50W and HPS 70W. The three weather grades of 50W, HPS 50W, and HPS 70W have an ASTM G101 enhanced Atmospheric Corrosion Resistance Index of ≥6.0.
ASTM A709 steels are among the most sought-after materials for outdoor infrastructure. The composition of A709 ensures strength, long lifespans, and resistance to the harshest outdoor conditions.
An Ideal Strength-to-Weight Ratio
The A709 alloy, which is composed of iron, manganese, carbon, and other elements, maintains an excellent strength-to-weight ratio. This means that smaller quantities of steel are required in order to meet our customer’s varying strength requirements, improving efficiency and cutting down on excess weight.
Properties that Combine Strength and Weldability
A709 steel maintains a tensile yield strength of 50,000 psi and an ultimate tensile strength of 65,300 psi. It is also highly weldable and can produce excellent quality welded joints.
As one of the largest service centers for structural steel in the China, A709 steel is just one of the many materials BBN Steel offers. Contact us today to learn more about this alloy or the many additional options we have available.
ASTM A709 steels are among the most sought-after materials for outdoor infrastructure. The composition of A709 ensures strength, long lifespans, and resistance to the harshest outdoor conditions.
An Ideal Strength-to-Weight Ratio
The A709 alloy, which is composed of iron, manganese, carbon, and other elements, maintains an excellent strength-to-weight ratio. This means that smaller quantities of steel are required in order to meet our customer’s varying strength requirements, improving efficiency and cutting down on excess weight.
Properties that Combine Strength and Weldability
A709 steel maintains a tensile yield strength of 50,000 psi and an ultimate tensile strength of 65,300 psi. It is also highly weldable and can produce excellent quality welded joints.
As one of the largest service centers for structural steel in the China, A709 steel is just one of the many materials BBN Steel offers. Contact us today to learn more about this alloy or the many additional options we have available.
