Value Collection QR03.5X1 D-2 Tool Steel Round 3.5in Dia

Product Description

The VALUE COLLECTION QR03.5X1 is a decarb-free D-2 air hardening tool steel round bar cut to a 1-inch overall length with a 3.5-inch diameter. D-2 is a high-carbon, high-chromium tool steel known for its excellent wear resistance and dimensional stability through the hardening process. The air hardening characteristic minimizes distortion during heat treatment, making this material a preferred choice for toolmakers, die makers, and machinists who require tight tolerances on finished components. Each piece ships in a decarburization-free condition, meaning the outer surface retains its full carbon content and does not require extra stock removal before use.

This round is suited for fabrication of punches, dies, gauges, forming tools, and wear plates in job shops, tool rooms, and production machining environments. The stock length format makes it practical for small-quantity prototype work or replacement tooling. At 3.5 inches in diameter and 1 inch in length, it is sized for lathe or surface grinder work without further parting. Machinists and tool and die makers are the primary end users. The piece weight of approximately 3.2 pounds keeps handling straightforward at the bench.

Key Features

• D-2 air hardening tool steel grade offers high wear resistance and low distortion during heat treat
• Decarb-free surface condition eliminates the need to remove an extra decarburized layer before machining to final size
• Diameter tolerance of plus 0.040 to plus 0.070 inches provides consistent oversize stock for finish grinding
• Length tolerance of plus 0.250 to minus 0.000 inches ensures minimum usable length is met
• Stock length format at 1 inch OAL suits single-component blanks and short tooling applications
• Weight per foot of 33.92 pounds consistent with standard D-2 round bar density

Compatibility

Designed as a general-purpose D-2 tool steel round suitable for any application requiring an air hardening, high-wear-resistance steel blank at 3.5 inches diameter and 1 inch length.

Installation Notes

D-2 tool steel should be machined using carbide tooling with appropriate feeds and speeds for hardened or semi-hardened tool steels. Heat treatment should be performed by a qualified tool room technician following the material supplier recommendations for austenitizing temperature and air quench procedure. Allow the blank to reach room temperature uniformly before secondary operations. Grinding after heat treat is recommended to achieve final dimensional tolerances.