Starrett 55070 Low Carbon Steel Flat Stock C1018

Product Description

The STARRETT 55070 is a low carbon steel flat bar cut to 24 inches long, 3.5 inches wide, and 1.5 inches thick, manufactured to AISI Type C1018 material specification. At 35.7 pounds per piece, this is a solid, production-grade stock bar suited for machining, fabrication, and general metalworking applications. Tolerances are held tight: length is cut to a plus 0.625 inch allowance, width holds plus 0.000 to 0.005 inch, and both thickness and squareness are controlled to plus or minus 0.001 inch. These tolerances make it appropriate for applications where dimensional consistency matters without requiring precision-ground stock.

This flat stock is used across fabrication shops, maintenance facilities, and trade applications where structural steel bar or machinable mild steel is required. C1018 low carbon steel offers good machinability, weldability, and formability, making it a common choice for brackets, fixture components, support plates, and general structural parts. It is typically installed or processed by machinists, fabricators, millwrights, and maintenance technicians working in industrial or commercial settings.

Key Features

• AISI Type C1018 low carbon steel for reliable machinability and weldability
• 24 inches long with a plus 0.625 inch length tolerance
• 3.5 inches wide held to plus 0.000 to 0.005 inch width tolerance
• 1.5 inches thick with plus or minus 0.001 inch thickness tolerance
• Squareness controlled to plus or minus 0.001 inch
• Single-piece package at 35.7 pounds — ready for immediate use or further processing

Compatibility

Designed as a standard AISI C1018 low carbon steel flat bar suitable for general fabrication, machining, and structural applications requiring mild steel flat stock in this size range.

Installation Notes

This flat stock is processed by machinists and fabricators using standard metalworking equipment including band saws, mills, and drill presses. Appropriate personal protective equipment including eye protection and gloves should be worn when cutting or machining. Welding this material follows standard low carbon steel procedures — preheat is generally not required for C1018 at this section thickness, but follow applicable shop procedures and AWS guidelines. Handle with mechanical lifting aids due to the 35.7 pound per piece weight.