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Glossary » Materials » Alloys » Steel » Carbon Steel » ASTM A612
ASTM A612 is categorized as Carbon Steel. It is composed of (in weight percentage) 0.27% Carbon (C), 1.00-1.50% Manganese (Mn), 0.035% Phosphorus (P), 0.04% Sulfur (S), 0.15-0.30% Silicon (Si), 0.25% Chromium (Cr), 0.25%(max) Nickel (Ni), 0.08%(max) Molybdenum (Mo), 0.08%(max) Vanadium (V), 0.35%(max) Copper (Cu), and the base metal Iron (Fe). Another common designation of ASTM A612 carbon steel is UNS K02900.
Steel is the common name for a large family of iron alloys. Steels can either be cast directly to shape, or into ingots which are reheated and hot worked into a wrought shape by forging, extrusion, rolling, or other processes. Wrought steels are the most common engineering material used, and come in a variety of forms with different finishes and properties. Carbon steels alloying elements do not exceed these limits: 1% carbon, 0.6% copper, 1.65% manganese, 0.4% phosphorus, 0.6% silicon, and 0.05% sulfur.

The typical elastic modulus of carbon steels at room temperature (25°C) ranges from 190 to 210 GPa. The typical density of carbon steels is about 7.85 g/cm3. The typical tensile strength varies between 276 and 1882 MPa. The wide range of ultimate tensile strength is largely due to different heat treatment conditions.

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