Carbon Steel Products Available from Marco Specialty Steel
Carbon steel is one of the most versatile and commonly specified materials across industrial and architectural applications. At Marco Specialty Steel, we supply and fabricate a wide range of carbon steel products, customized to meet your project requirements.
- Carbon Steel Wire Cloth: Used for filtration, screening, separation applications, and architectural infill panels. Read more about wire cloth products.
- Carbon Steel Perforated Metal: Ideal for ventilation, screening, guards, and architectural infill panels. Read more about perforated metal products.
- Carbon Steel Expanded Metal: Commonly used for walkways, fencing, machine guards, and safety applications. Read more about expanded metal products.
- Carbon Steel Bar Grating: Designed for platforms, catwalks, stair treads, and industrial flooring. Read more about bar grating products.
Carbon Steel Fabrication Capabilities
Marco Specialty Steel offers in-house carbon steel fabrication to meet exact project specifications. Our team routinely fabricates carbon steel products for industrial plants, refineries, and architectural applications. Fabrication expamples:
- Cutting to size
- Welding and assembly
- Hot-dip Galvanizing after
- Framing and banding
- Custom panel layouts
- Stair treads, platforms, and safety components
Need fabricated carbon steel components? Contact us for our team to help review your drawings and requirements.
Carbon Steel and Alloy Steel
Marco is a supplier of carbon steel wire cloth, expanded metal, perforated metal, and gratings. We carry a variety of carbon steel grades, including: 1018, A36, 1144, 12L14, A366/1008, A513 & 8620.
Carbon Steel Types
There are four types of carbon steel based on the amount of carbon present 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 they become more difficult to machine and weld. Below are the properties of the grades of carbon steel:
- 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, carburizing can increase its surface hardness.
- Medium Carbon Steel: Composition of 0.29%-0.54% carbon, with 0.60%-1.65% manganese. Medium carbon steel is ductile and strong, with long-wearing 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. Due to its brittleness, this grade requires special handling.
A36 Mild Steel
ASTM A36 steel is the most commonly available of the hot-rolled steels. It is generally available in square bar, rectangle bar, as well as steel shapes such as I-Beams, H-beams, angles, and channels. The hot roll process means that the surface on this steel will be somewhat rough. Note that its yield strength is also significantly less than 1018 – this means that it will bend much more quickly than will 1018. Finally, machining this material is noticeably more difficult than 1018 steel, but the cost is usually significantly lower.
ASTM A36 Mild (low-carbon) Steel
| Minimum Properties | Ultimate Tensile Strength, psi | 58,000 - 79,800 |
| Yield Strength, psi | 36,300 | |
| Elongation | 20.0% | |
| Chemistry | Iron (Fe) | 99% |
| Carbon (C) | 0.26% | |
| Manganese (Mn) | 0.75% | |
| Copper (Cu) | 0.2% | |
| Phosphorus (P) | 0.04% max | |
| Sulfur (S) | 0.05% max |
1018 Mild Steel
Alloy 1018 is the most commonly available of the cold-rolled steels. It is generally available in round rod, square bar, and rectangle bar. It has a good combination of all of the typical traits of steel – strength, some ductility, and comparative ease of machining. Chemically, it is very similar to A36 Hot Rolled steel, but the cold rolling process creates a better surface finish and better properties.
1018 Mild (low-carbon) Steel
| Minimum Properties | Ultimate Tensile Strength, psi | 63,800 |
| Yield Strength, psi | 53,700 | |
| Elongation | 15.0% | |
| Rockwell Hardness | B71 | |
| Chemistry | Iron (Fe) | 98.81 - 99.26% |
| Carbon (C) | 0.18% | |
| Manganese (Mn) | 0.6 - 0.9% | |
| Phosphorus (P) | 0.04% max | |
| Sulfur (S) | 0.05% max |
1144 (Stressproof-equivalent) steel
This material is actually pretty cool, at least for steel. It is a higher-strength alloy than 1018 or A36, but in addition has improved ductility as well. The chief feature of 1144 steel, however, is that it has very low distortion or warpage after machining due to a combination of its chemistry, method of manufacture, and heat treatment. Finally, 1144 is relatively easy to machine, with a machinability rating of 83% of AISI 1212 steel.
1144 (Stressproof-equivalent) Steel
| Minimum Properties | Ultimate Tensile Strength, psi | 115,000 |
| Yield Strength, psi | 100,000 | |
| Elongation | 8.0% | |
| Rockwell Hardness | B95 / C17 | |
| Chemistry | Iron (Fe) | 97.54 - 98.01% |
| Carbon (C) | 0.4 - 0.44% | |
| Manganese (Mn) | 1.35 - 1.65% | |
| Phosphorus (P) | 0.04% max | |
| Sulfur (S) | 0.24 - 0.33% |
12L14 free machining steel
This alloy has lead added to the mix in order to enhance its machinability. In fact, it is rated with a machinability of 160% of AISI 1212 steel. The addition of lead does, however, reduce the strength of this alloy, although it is generally stronger than 1018.
12L14 Free Machining Steel
| Minimum Properties | Ultimate Tensile Strength, psi | 78,300 |
| Yield Strength, psi | 60,200 | |
| Elongation | 10.0% | |
| Rockwell Hardness | B84 | |
| Chemistry | Iron (Fe) | 97.91 - 98.7% |
| Carbon (C) | 0.15% max | |
| Manganese (Mn) | 0.85 - 1.15% | |
| Phosphorus (P) | 0.04 - 0.09% | |
| Lead (Pb) | 0.15 - 0.35% | |
| Sulfur (S) | 0.26 - 0.35% |
A366/1008 Steel
This alloy is generally used for “commercial quality” cold rolled steel sheet. It is known for its very good formability and comparatively high strength. It has a very good surface finish that is far superior to hot rolled A36.
ASTM A366 (alloy 1008) Steel
| Minimum Properties | Ultimate Tensile Strength, psi | 43,900 - 51,900 |
| Yield Strength, psi | 26,100 - 34,800 | |
| Elongation | 42 - 48% | |
| Chemistry | Iron (Fe) | 99% |
| Carbon (C) | 0.08% | |
| Manganese (Mn) | 0.6% max | |
| Phosphorus (P) | 0.035% max | |
| Copper (Cu) | 0.2% min | |
| Sulfur (S) | 0.04% |
A513 (alloy 1020-1026) Steel
This alloy is generally used for DOM tubing. Its higher carbon content means higher strength, but lower weldability and machinability.
ASTM A513 Alloys 1020 – 1026 Mild (low-carbon) Steel
| Minimum Properties | Ultimate Tensile Strength, psi | 87,000 |
| Yield Strength, psi | 72,000 | |
| Elongation | 10.0% | |
| Rockwell Hardness | B89 | |
| Chemistry | Iron (Fe) | 99.08 - 99.53% |
| Carbon (C) | 0.18 - 0.23% | |
| Manganese (Mn) | 0.3 - 0.6% | |
| Phosphorus (P) | 0.04% max | |
| Sulfur (S) | 0.05% max |
8620 Alloy Steel
This material is characterized by a hard outer surface, combined with a ductile interior for higher strength.
8620 (chrome-nickel-moly) Alloy Steel
| Minimum Properties | Tensile Strength, psi | 97,000 |
| Yield, psi | 57,000 | |
| Brinell Hardness | 201 | |
| Elongation | 25% | |
| Machinability | 66% | |
| Chemistry | Carbon (C) | 0.18 - 0.23% |
| Manganese (Mn) | 0.7 - 0.9% | |
| Phosphorus (P) | 0.35% Max | |
| Sulphur (S) | 0.4% Max | |
| Silicon (Si) | 0.15 - 0.35% | |
| Chromium (Cr) | 0.4 - 0.6% | |
| Nickel (Ni) | 0.4 - 0.7% | |
| Molybdenum (Mo) | 0.15 - 0.25% max |