The A770/A770M-03(2012)e1 steel grade is a standard specification for through-thickness tension testing of structural steel plates. It is commonly used in the construction industry for applications such as bridges and buildings.
The chemical composition of this steel grade is as follows:
– Carbon (C): 0.20% maximum
– Manganese (Mn): 1.15-1.50%
– Phosphorus (P): 0.030% maximum
– Sulfur (S): 0.030% maximum
– Silicon (Si): 0.15-0.40%
– Copper (Cu): 0.35% maximum
– Nickel (Ni): 0.20% maximum
– Chromium (Cr): 0.15% maximum
– Molybdenum (Mo): 0.15% maximum
– Vanadium (V): 0.06% maximum
The mechanical properties of A770/A770M-03(2012)e1 steel grade are as follows:
– Tensile strength: 70-90 ksi (485-620 MPa)
– Yield strength: 50 ksi (345 MPa) minimum
– Elongation in 2 inches (50mm): 18% minimum
– Reduction of area: 45% minimum
– Charpy V-notch impact test: 20 ft-lb (27 J) minimum at -20°F (-29°C)
This steel grade conforms to the American Society for Testing and Materials (ASTM) standard A770/A770M-03(2012)e1.
The corresponding European standard for this steel grade is S275JR (1.0044) according to EN 10025-2:2004.