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.
A709 alloy also maintains excellent corrosion resistance, allowing it to maintain long lifespans–even during the most harsh atmospheric conditions. These properties make A709 ideal for applications such as bridges, and is a standard material employed by the American Association of State Highway and Transportation.
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. The high-strength, low alloy steel can be used in:
I-Beams
Structural Angles
Wide Flange Beams
Steel Plates
Structural Steel Channels
Composition Breakdown
The composition of A709 can vary somewhat, but generally stays within the following parameters:
98% Iron
0.23% Carbon
1.35% Manganese
< 0.040% Phosphorous
< 0.050% Sulfur
