A36 A992 H Beam Wide Flange

Common Uses of A36

A36 steel is used in many different industries for a variety of applications because of its relatively low cost. Also, as mentioned, the mechanical properties make it particularly suited for structural applications. Many bridges are constructed with A36 steel. Likewise, buildings are frequently created with A36 steel because of its high strength and toughness. A36 steel is also used for components in the automotive, construction, heavy equipment, and oil and gas industries.

ASTM A36 and A992 are not chemically identical, though they're similar. A36 allows a hair more carbon minimum (0.25 to 0.29%) vs. 0.23% for A992, though A992 allows more carbon in certain situations. A36 uses a bit less manganese (useful for controlling sulfur impurities), while A992 allows both more manganese and more sulfur. A992 should be a bit more weldable than A36, and emphasizes being a fully killed (deoxidized) steel while A36 leaves deoxidation open.

So, basically the two steels are close, even overlapping, and A992 has been used to replace A36 in a number of structural applications. But the differences warrant a closer look for specific applications.

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