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Carbon Steel

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While the American Iron and Steel Institute has a very strict definition of carbon steel and permissible content levels for additional elements, the term is more broadly applied to all iron and carbon steel alloys where the presence of other metals is minimal. Read More…

Carbon Steel Carbon steel is a metal alloy composed primarily of iron with carbon being the second largest component, imparting hardness and strength to varying degrees dependent upon the amount present.
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Leading Manufacturers

Skokie, IL  |  847-966-3000

Block Steel Corp, ISO/TS 16949 Certified, specializes in aluminized steel and is the country’s largest aluminized steel distributor. We also stock Aluminized Stainless, Hot Dipped Galvanized, and distribute tubing.

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Block Steel Corp. $$$

Kenilworth, NJ  |  908-272-2620

Blue Blade Steel is a U.S. made spring steel manufacturer offering tempered steel services. We are also a steel manufacturer of custom strip steel for a variety of industries. We have state-of-the-art equipment, and believe in embracing new technologies. Seek when you need high product quality.

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Blue Blade Steel $$$

Youngstown, OH  |  800-321-9257

Here at Hynes Industries we offer a number of custom roll formed and standard roll formed products. With manufacturing experiences dating back to 1925 we have the background and skill to handle all of your requests. Simply contact one of our representatives to learn more information!

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Hynes Industries $$$

Kenilworth, NJ  |  908-497-1477

Aircraft-quality alloy steel in sheet and plate is available through Benedict-Miller’s steel service center. We meet AMS, ASTM and AISI specifications, and are ISO 9002-certified. We have our own in-house metallurgical laboratory. Benedict-Miller is a subsidiary of Blue Blade Steel.

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Benedict-Miller, Inc. $$$

Houston, TX  |  800-749-4621

Cold Rolled Steel is a mill product made with a high degree of gauge accuracy and uniformity of physical characteristics. The smooth deoxidized matte finish gives an excellent base for paint, lacquer and enamel. Box annealing and absence of scale permit stamping and moderate drawing operations. Sheets bend flat on themselves without cracking. Our Cold Rolled sheet and coil conform to ASTM A1008.

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Curtis Steel Co., Ltd. $$$
placeholder image Block Steel Corp. Blue Blade Steel Hynes Industries Benedict-Miller, Inc. Curtis Steel Co., Ltd.

In general, carbon steel is a very hard ferrous metal. As the carbon content varies, so do the properties of a specific alloy. Lower carbon amounts result in alloys with properties very similar to pure iron, but as the content raises hardness, corrosion resistance and strength are proportionately increased.

High levels of carbon, however, decrease ductility, temperature resistance, melting point and fabrication possibilities. Steel service centers provide this material for a number of industries including construction, architecture, marine superstructure, automotive, electronics, aerospace and power generation among others.

Steel Processing Equipment Carbon Steel - Block Steel Corp.

While some service centers provide finished products, many manufacturers purchase stock shapes such as bars, rods, tubes, plates, sheets, strips, foil, wire, billets, slabs and blooms. Additionally, ingots and powders are available for powder metallurgy applications. These stock materials are formed into a variety of finished products ranging from structural beams to automotive paneling.

Also referred to as plain carbon steel, the variability of this material leads to a general classification system allowing manufacturers to select the proper alloy for a given application. Mild or low carbon steel is the most common form as it is inexpensive and highly malleable. The low tensile strength of this 0.05% to 0.15% carbon alloy, however, can be undesirable in some applications.

Medium carbon steel has a carbon content of between 0.3% and 0.59%, providing a balance between strength and ductility. High carbon steel is composed of between 0.6% and 0.99% carbon, forgoing much of the ductility of iron in favor of high tensile strength. Ultra-high carbon steel contains approximately 1.0% to 2.0% carbon and is among the hardest metal alloys.

The material commonly referred to as cast iron is actually a very high carbon steel alloy. Higher carbon content lowers the melting point, allowing for more fabrication possibilities. These possibilities generally include casting, forging, spinning, slitting, shearing, coiling, coating and cutting. Heat treatments such as annealing, quenching, martempering and spheroidizing are often used to further manipulate the mechanical properties of a given alloy.

Case hardening is a common finishing technique as it hardens only the exterior of carbon steel, allowing a product to retain internal ductility but with a wear-resistant exterior case. In addition to finishing treatments, considerations for carbon steel include dimensions such as outer diameter, inner diameter, length and thickness, which, along with carbon content levels, help determine production possibilities.

Carbon Steel Informational Video