Value Collection DA1.25X01.5X36 4140 Steel Flat Bar

Product Description

The VALUE COLLECTION DA1.25X01.5X36 is a 4140 alloy steel flat bar supplied in a pre-hardened condition, ready for use in demanding fabrication and tooling applications. Measuring 1.25 inches thick by 1.5 inches wide by 36 inches long and weighing 20.96 pounds, this bar delivers the toughness and wear resistance characteristic of 4140 chrome-molybdenum steel without requiring additional heat treatment before use. It is well suited for machine shops, maintenance facilities, and industrial fabrication environments where close-tolerance stock is needed for shafts, fixtures, tooling components, and structural supports.

This flat bar is appropriate for both light and heavy industrial applications where moderate-to-high strength steel stock is required. Machinists, tool-and-die makers, millwrights, and fabricators typically work with this material when building fixtures, jigs, wear plates, and replacement machine components. The pre-hardened condition reduces lead time on projects that would otherwise require off-site heat treatment, making it practical for in-shop or on-site work where turnaround matters.

Key Features

• 4140 chrome-molybdenum alloy steel for improved strength, toughness, and wear resistance over mild steel
• Pre-hardened condition eliminates the need for additional heat treatment before most applications
• Flat bar profile at 1.25 inches thick and 1.5 inches wide for consistent stock removal and close-tolerance machining
• 36-inch length provides a full 3-foot working section suitable for a wide range of part sizes
• Weighs 20.96 pounds per bar, consistent with expected density for this alloy and cross-section

Compatibility

Designed as a general-purpose 4140 pre-hardened alloy steel flat bar suitable for use as raw stock in machining, fabrication, and tooling applications across a broad range of industries.

Installation Notes

Cutting and machining of 4140 pre-hardened steel requires carbide or high-speed steel tooling rated for hardened alloy stock. Secure the bar properly in a vise or fixture before sawing or drilling to prevent movement and tool damage. Welding pre-hardened 4140 is not recommended without pre-heat and post-weld heat treatment procedures consistent with applicable AWS guidelines. Wear appropriate PPE including eye protection and gloves when cutting or grinding this material.