WPS Round Bar

Product Description

D2/D3 Imp. Round Bar Description

D2 and D3 are designations for types of high-carbon, high-chromium tool steels used in various industrial applications. The term "Imp." likely stands for "Improved," referring to variations or enhancements of these steels. Here™s a detailed description of D2 and D3 improved round bars:

D2 Round Bar

1. Material Composition

   - Chromium 11.0% - 13.0%

   - Carbon 1.40% - 1.60%

   - Manganese 0.60% - 0.90%

   - Silicon 0.60% - 0.90%

   - Vanadium 0.10% - 0.30%

2. Properties

   - Hardness D2 steel can be heat-treated to achieve high hardness, typically ranging from 55 to 62 HRC (Rockwell Hardness).

   - Wear Resistance Known for its excellent wear resistance due to its high carbon and chromium content.

   - Toughness Good toughness, though not as high as some other tool steels.

3. Applications

   - Tooling Often used for making dies, punches, and other tooling components.

   - Machining Suitable for applications where high wear resistance is critical.

4. Surface Finish

   - Typically comes with a standard mill finish, though it can be further machined or ground as needed.

5. Heat Treatment

   - Hardening Heat to 1020C (1870F) and then quench in oil or air.

   - Tempering To relieve stresses and adjust hardness, temper at 180C - 500C (356F - 932F).

D3 Round Bar

1. Material Composition

   - Chromium 1.0% - 1.5%

   - Carbon 1.40% - 1.60%

   - Manganese 0.30% - 0.60%

   - Silicon 0.20% - 0.60%

2. Properties

   - Hardness Similar to D2, D3 steel can be hardened to 60-62 HRC.

   - Wear Resistance Excellent wear resistance but slightly less than D2 due to lower chromium content.

   - Toughness Generally has good toughness but may not be as high as D2.

3. Applications

   - Tooling Used for applications similar to D2, including dies and cutting tools.

   - High-Impact Applications Suitable for parts that require high strength and moderate impact resistance.

4. Surface Finish

   - Like D2, it typically has a standard mill finish but can be further processed as required.

5. Heat Treatment

   - Hardening Heat to approximately 830C - 870C (1525F - 1600F) and then quench in oil or air.

   - Tempering Temper at 180C - 500C (356F - 932F) to achieve the desired hardness and relieve stresses.

Improved (Imp.) Versions

The "Improved versions of D2 and D3 may offer enhancements in terms of:

- Uniformity More consistent chemical composition and properties.

- Processing Improved machinability and heat treatability.

- Performance Better wear resistance, toughness, or other mechanical properties.

These round bars are used in demanding applications where durability and precision are crucial. Their enhanced properties make them suitable for high-performance tools and industrial components.