Carbon & Alloy Steel
Carbon steel is a steel alloy consisting of iron and carbon. Several other elements are allowed in carbon steel, with low maximum percentages. They are manganese, with a 1.65% maximum, silicon, with a 0.60% maximum, and copper, with a 0.60% maximum. Other elements may be present in the steel in quantities too small to affect its properties.
There are four types of carbon steel based on the amount of carbon in the alloy. Lower carbon steels are softer and more easily formed and steels with a higher carbon content are harder and stronger, but less ductile and harder to machine and weld.
- Low Carbon Steel – Composition of 0.05%-0.25% carbon and up to 0.4% manganese. Also known as mild steel, it is a low cost material that is easy to shape. While not as hard as higher-carbon steels, its surface hardness can be increased by carburizing.
- Medium Carbon Steel – Composition of 0.29%-0.54% carbon with 0.60%-1.65% manganese. Medium carbon steel is ductile and strong with good wear properties.
- High Carbon Steel – Composition of 0.55%-0.95% carbon with 0.30%-0.90% manganese. It is very strong and holds shape memory well, making it ideal for springs and wire.
- Very High Carbon Steel - Composition of 0.96%-2.1% carbon. Its high carbon content makes it an extremely strong material, though it is brittle and requires special handling.
O'Neal stocks a wide variety of carbon steel plate, shapes and bar products in the hot rolled condition. Contact our staff to select the carbon steel product that is right for your application.
Angle is a hot rolled, steel angle shape with inside radius corners that is ideal for all structural applications, general fabrication and repairs.View More »
Carbon steel structural beams are manufactured in two configurations: I-Beams and H-Beams. Both are constructed with horizontal flanges on top and bottom.View More »
Steel channel is a hot-rolled carbon steel channel shape. Constructed using a vertical web and top and bottom horizontal flanges with inside radius corners, it is available...View More »
Bars are available in round, square, flat, and hexagon bars in the hot rolled or cold drawn condition. While hot rolled and cold drawn bars have the same general shape...View More »
Plate has been defined as a metal sheet with a thickness of 6mm or more; sheet is defined as metal that is thicker than foil and less than 6mm. Due to its higher thickness...View More »
Selecting floor plates was once a rather simple task as a flat piece of carbon steel was the only offering. To meet demands of safety and appearance, steel producers developed...View More »
Steel sheet is material produced from coil and is most commonly found in thicknesses less than .180. Steel retains its original shape and form, and must be treated before or during fabrication to provide the desired flatness...View More »
Metal pipe can be used for structural applications or for fluid, gas, oil transmission. The choice of steel alloy used is determined by the application – steels that provide good performance...View More »
While the terms tube and pipe are used interchangeably, there are technical differences between the two products. Pipes are generally considered to be used as a passageway to transport...View More »
Carbon steel grating is a heavy duty grating that can be used where open flooring is needed for air, light and heat transmission. It does not exhibit good corrosion resistance...View More »
Expanded & Perforated Metal
Carbon steel expanded metal is a carbon steel sheet that has been simultaneously slit and stretched into a rigid, non-raveling mesh with diamond-shaped openings.View More »