Grade 1018 Cold Roll Hex Bar

1018 Cold Finish Hexagon Bar is a low carbon steel known for its good case hardening capabilities and excellent cold formability. Its hexagonal shape provides multiple gripping surfaces, making it a reliable choice for fasteners, shafts, and other precision-machined components.

1018 Cold Rolled Steel is available in a wide range of shapes—including rounds, flats, squares, and hexagons—offering flexibility for machining, structural, and industrial applications that require high accuracy and smooth finishes.

C1018 Cold Finished Hexagon Bar, also referred to as CRS Hex or Cold Roll Hex Bar, is manufactured with tight dimensional tolerances and a smooth, refined surface. It is ideal for applications requiring consistent machinability and clean surface quality.

Cold finished steel hexagons offer enhanced mechanical properties compared to hot rolled alternatives, including higher tensile and yield strength, more precise sizing, and improved surface smoothness. These attributes make them a top choice in manufacturing and precision engineering.

Specifications
Available Lengths
2ft, 4ft, 6ft, 10-12ft Randoms or Custom Cut.
Measurement Guide
Thickness (A) x Width (B) x Length.
PageTitle
1018 Cold Finished Hexagon Bar, CRS Low Carbon Steel for Machined Parts and Fasteners
Specifications
AISI 1018; ASTM A108; UNS G10180.
Surface Finish
Smooth, Oily Finish; Sharp Corners.
Heat Treatment
Can be carburized and heat treated for case hardening.
Carburizing at 1650°-1700°F, quenching, and tempering at 300°-350°F results in a hard case and tough core.
Additional Notes
Stock lengths may vary +/- 1/4"; Custom Cut lengths available on request.
Designed for precision machining, gears, sprockets, and industrial applications.
Applications
Used for shafts, axles, levelers, fixtures, tooling, hardware, and adjustment blocks.
Commonly found in machine parts, gears, ratchets, worms, pinions, pins, dowels, tool holders, and general fabrication.
Workability
Can be cut, machined, or welded using standard steel fabrication methods.
Cold drawing increases tensile and yield strength while improving surface hardness and wear resistance.
Easily welded by all welding processes, producing high-quality joints.
Chemical Composition
Carbon (C): 0.14 - 0.2%.
Iron (Fe): 98.81 - 99.26%.
Manganese (Mn): 0.6 - 0.9%.
Phosphorus (P): 0.04% max.
Sulfur (S): 0.05% max.
Mechanical Properties
Ultimate Tensile Strength: 63,800 psi.
Yield Strength: 53,700 psi.
Shear Strength: 43,500 psi.
Density: 0.284 lb/in³ (7.87 g/cc).
Melting Point: 2,590 - 2,670°F (1,420 - 1,460°C).
Brinell Hardness: 126.
Rockwell Hardness: B71.
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