Value Collection SR01.375X12 S-7 Tool Steel Round Bar

Product Description

The VALUE COLLECTION SR01.375X12 is a decarb-free S-7 tool steel round bar designed for toolmaking, die work, and industrial machining applications. With a 1-3/8 inch diameter and 12 inch overall length, this round stock ships at a positive diameter tolerance of +0.010 to +0.020 inches, meaning the bar arrives oversize for finish grinding to final dimension. S-7 is an air- or oil-hardening shock-resistant tool steel known for its high impact toughness, moderate wear resistance, and ability to maintain hardness under repeated mechanical shock. Machinists, toolmakers, and die shops use this material for punches, chisels, driver bits, and tooling subject to impact loading.

This round bar is suited for job shops, toolrooms, and production facilities that need short-length stock for custom tool fabrication. The 12 inch stock length and single-piece minimum order make it practical for prototype work, repair tooling, or replacement components. The decarb-free condition eliminates the decarburized surface layer common in standard mill stock, reducing pre-machining cleanup and allowing closer stock allowances before heat treatment. Typical end users include tool and die makers, mold makers, and maintenance machinists working in industrial manufacturing environments.

Key Features

• S-7 Hi-Shock tool steel grade offers high impact toughness for punches, drivers, and shock-loaded tooling
• Decarb-free condition eliminates surface carbon depletion, reducing pre-grind stock removal before heat treat
• Positive diameter tolerance (+0.010 to +0.020 inches oversize) allows finish grinding to final dimension
• Stock length tolerance of +0.250 to -0.000 inches ensures minimum usable length is met
• 1-3/8 inch diameter at 12 inch length yields approximately 5.40 pounds per foot for easy material planning
• Single-piece minimum order quantity supports low-volume toolroom and repair applications

Compatibility

Designed as a general-purpose S-7 tool steel round bar for toolmaking, die, and machining applications requiring shock-resistant material in 1-3/8 inch diameter stock form.

Installation Notes

Cutting and machining of tool steel round bar should be performed by qualified machinists using appropriate cutting fluids and tooling rated for hardened or pre-hardened steel stock. Heat treatment of S-7 steel, including austenitizing, quenching, and tempering, should follow the material manufacturer's published thermal processing guidelines and be performed by personnel experienced with tool steel metallurgy. Always wear appropriate PPE when cutting, grinding, or handling steel bar stock. Secure the workpiece properly in a vise or chuck before any machining operation to prevent movement under cutting load.