Starrett 54999 Low Carbon Steel Flat Stock Aisi C1018

Product Description

The STARRETT 54999 is a low carbon steel flat stock bar measuring 24 inches long, 12 inches wide, and 0.5 inches thick. Manufactured to AISI Type C1018 specification, this flat stock delivers consistent dimensional accuracy with tight tolerances: plus or minus 0.001 inches on thickness and square, plus 0.000 to 0.015 inches on width, and plus 0.625 inches on length. Weighing 40.8 pounds, it is suited for fabrication shops, maintenance facilities, and job sites requiring reliable mild steel plate stock for structural, framing, or general machining applications. Machinists, fabricators, and maintenance mechanics are the primary installers and users of this material.

This flat stock is used in light structural fabrication, weld fixturing, machine bases, brackets, and general repair work across industrial and commercial maintenance environments. AISI C1018 low carbon steel offers good weldability and machinability, making it a common choice for parts that require drilling, tapping, milling, or welding without the need for high-alloy or hardened material. It is appropriate for both shop and field fabrication scenarios where standard mild steel properties are sufficient.

Key Features

• AISI Type C1018 low carbon steel construction for good weldability and machinability
• Thickness tolerance of plus or minus 0.001 inches for consistent fit in precision applications
• Width tolerance of plus 0.000 to 0.015 inches ensures controlled stock sizing
• Length tolerance of plus 0.625 inches provides adequate material for cut-to-fit applications
• 40.8 pound piece weight suitable for heavy-duty fabrication tasks
• Standard flat bar geometry compatible with common metalworking and layout operations

Compatibility

Designed as a general-purpose low carbon steel flat stock for use in fabrication, repair, and manufacturing applications requiring AISI C1018 mild steel material.

Installation Notes

Handling and cutting of steel flat stock should be performed by qualified fabricators or machinists using appropriate PPE including gloves and eye protection. Secure the workpiece firmly before cutting, drilling, or milling operations. When welding, follow applicable AWS welding codes and ensure proper ventilation. Edges may be sharp as supplied and should be deburred before handling or installation in finished assemblies.