What is the difference between grade 60 and grade 80 steel?
The difference between grade 60 and grade 80 steel is yield strength of the steel. Grade 60 steel has a yield strength of 60,000 psi and grade 80 steel has a yield strength of 80,000 psi. As the illustration indicates a grade 60 steel bar with an area of steel of one square inch can hold a 60,000-pound elephant. Likewise a grade 80 steel bar with the same area of steel can hold an 80,000-pound elephant.
Why would I want to use grade 80 steel in lieu of grade 60 steel?
Converting from grade 60 steel to grade 80 steel will save you or your client time and money. Converting conventional grade 60 rebar into high yield grade 80 Welded Wire Reinforcement allows the designer to reduce the area of steel by 25%. A grade 60 #8 bar has an area of steel of 1 in2. The same load carried by the #8 bar can be transferred to a 3/4 in2 grade 80 bar. Thereby, reducing the area of steel by 25%. Reducing the area of steel by 25% reduces the weight by 25% and results in a reduction of cost.
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