Starrett 54998 Low Carbon Steel Flat Stock Aisi C1018

Product Description

The STARRETT 54998 is a low carbon steel flat stock bar conforming to AISI Type C1018 material specification. This stock measures 24 inches long, 10 inches wide, and 0.5 inches thick, weighing 34 pounds per piece. C1018 is a commonly used low carbon steel grade valued for its machinability, weldability, and consistent mechanical properties. It is used across fabrication, maintenance, and repair applications where a reliable, general-purpose mild steel flat bar is required. Thickness and square tolerances are held to plus or minus 0.001 inches, with width tolerance of plus 0.000 to 0.015 inches and length tolerance of plus 0.625 inches.

This flat stock is suited for fabrication shops, industrial maintenance facilities, and trade professionals requiring cut-to-size or ready-to-use mild steel flat bar. Typical applications include mounting plates, brackets, shims, structural support members, and general metalwork in HVAC, plumbing, and mechanical construction environments. The 24 x 10 inch footprint and half-inch thickness make it appropriate for medium-duty structural and fabrication tasks without secondary processing.

Key Features

• AISI Type C1018 low carbon steel for consistent machinability and weldability
• Thickness tolerance of plus or minus 0.001 inches for precision fitment
• Width tolerance of plus 0.000 to 0.015 inches
• Length tolerance of plus 0.625 inches
• 34 pounds per piece, suitable for medium-duty fabrication and structural applications
• Single-piece minimum order quantity

Compatibility

Designed as a general-purpose low carbon steel flat bar for fabrication, maintenance, and repair applications across industrial and mechanical trades.

Installation Notes

Cutting, drilling, and welding of C1018 mild steel flat stock should be performed by qualified metalworkers or trade professionals using appropriate personal protective equipment. Always de-energize or shut off any connected systems before fitting or fastening this stock in mechanical or electrical enclosure applications. Follow applicable local codes and standards when using this material in structural or load-bearing assemblies.