Starrett 55025 Low Carbon Steel Flat Stock Aisi C1018

Product Description

The STARRETT 55025 is a low carbon steel flat stock bar measuring 24 inches long, 4 inches wide, and 0.75 inches thick, conforming to AISI Type C1018 material specification. This cold-finished flat bar is manufactured to tight dimensional tolerances, making it suitable for precision fabrication, machining, and structural applications where consistent cross-section and surface flatness are required. At 20.4 pounds per piece, it delivers the mass and rigidity expected from a solid steel flat stock. Machinists, fabricators, welders, and millwrights are the primary users of this material in shop and field applications.

AISI C1018 low carbon steel offers good machinability, moderate tensile strength, and ready weldability without the need for pre-heat in most standard shop conditions. This flat stock is well suited for use as mounting plates, brackets, spacers, shims, ways, and general structural components in light industrial and commercial fabrication environments. The 24-inch length provides a practical starting cut for a wide range of part sizes, and the 0.75-inch thickness supports applications that require meaningful load-bearing cross-section without the weight penalty of medium or high carbon alternatives.

Key Features

• AISI Type C1018 low carbon steel for consistent machinability and weldability
• 24 x 4 x 0.75 inches nominal dimensions with tight tolerance control on all axes
• Thickness and square tolerance of plus or minus 0.001 inches for precision fit-up
• Width tolerance of plus 0.000 to plus 0.005 inches ensures no undersize condition
• Length tolerance of plus 0.625 inches allows for facing and squaring operations
• Single-piece packaging with no minimum order multiplier requirement beyond one piece

Compatibility

Designed as a general-purpose cold-finished flat bar for use in standard machining, fabrication, and structural applications requiring AISI C1018 low carbon steel stock.

Installation Notes

Cutting, drilling, and machining operations on steel flat stock should be performed by qualified machinists or fabricators using appropriate tooling and personal protective equipment. Secure the workpiece firmly in a vise or fixture before any cutting or drilling to prevent movement. Edges and cut surfaces will be sharp — deburr all machined faces before handling or assembly. Follow applicable shop safety codes and equipment manufacturer guidelines for all metalworking operations.