1.2380/D7/X230crvmo13-4 Round Bar/Flat Bar/Block
D7 steel is a high-carbon, high-chromium tool steel known for its excellent wear resistance, toughness, and dimensional stability. It belongs to the cold work tool steel group and is commonly used in applications requiring high hardness and abrasion resistance, such as blanking, forming, and stamping of abrasive materials. D7 steel offers good machinability and can be hardened to achieve a high level of wear resistance, making it suitable for manufacturing various cutting tools, dies, and components used in metalworking and manufacturing industries.
Chemical Composition:
| C(%) |
Si(%) |
Mn(%) |
Cr(%) |
Mo(%) |
V(%) |
P(%) |
S(%) |
| 2.15-2.50 |
0.10-0.60 |
0.20-0.60 |
11.5-13.5 |
0.70-1.20 |
3.80-4.40 |
≤0.030 |
≤0.030 |
Properties:
- High Hardness: D7 steel exhibits high hardness after heat treatment, providing excellent resistance to abrasion, wear, and deformation during machining and forming operations.
- Excellent Wear Resistance: It offers superior wear resistance due to its high chromium and carbon content, making it suitable for applications involving abrasive materials and high-impact loads.
- Good Toughness: Despite its high hardness, D7 steel retains good toughness, reducing the risk of chipping or cracking during use in heavy-duty applications.
- Dimensional Stability: D7 steel exhibits excellent dimensional stability during heat treatment and machining processes, ensuring tight tolerances and precise dimensions in finished parts.
- High Temperature Resistance: It maintains its hardness and mechanical properties at elevated temperatures, allowing for consistent performance in hot forming and forging applications.
- Corrosion Resistance: D7 steel offers moderate corrosion resistance in comparison to other tool steels, making it suitable for use in environments where exposure to moisture and corrosive substances is limited.
- Versatility: D7 steel is versatile and can be used for various applications, including blanking dies, forming dies, punches, and cutting tools, in industries such as automotive, aerospace, and manufacturing.
Applications:
- Blanking and Forming Dies: D7 steel is commonly used for manufacturing blanking dies and forming dies used in stamping, punching, and forming operations involving sheet metal and other materials.
- Cutting Tools: It finds application in the production of cutting tools such as shearing blades, slitters, and punches used in metalworking, fabrication, and machining industries.
- Cold Work Applications: D7 steel is suitable for a wide range of cold work applications, including cold forging, cold heading, and cold extrusion, where high wear resistance and toughness are required.
- Tool and Die Making: It is employed in tool and die making for producing precision components used in metal stamping, forging, and molding processes in various manufacturing sectors.
- Machining Components: D7 steel is utilized for manufacturing machining components such as guides, bushings, and wear plates that require high wear resistance and dimensional stability in high-stress environments.
Heat Treatment: D7 steel is typically subjected to heat treatment processes such as annealing, hardening, and tempering to optimize its mechanical properties. Annealing relieves internal stresses and improves machinability, while hardening increases hardness and wear resistance. Tempering reduces brittleness and improves toughness, allowing for the desired balance of hardness and toughness to be achieved.
Surface Treatment: Surface treatments such as nitriding, coating, or plating can be applied to D7 steel to further enhance its wear resistance, corrosion resistance, and overall performance in specific applications. These treatments can prolong tool life, improve cutting performance, and reduce friction and adhesive wear during machining operations.
Quality Assurance: D7 steel is manufactured to meet various international quality standards such as ASTM A681 and AISI D7. Quality assurance processes ensure consistency in chemical composition, mechanical properties, and dimensional accuracy of the material. Quality control measures are implemented throughout the production process to ensure that D7 steel meets the stringent requirements of end-users and applications.
Environmental Considerations: In manufacturing and machining processes involving D7 steel, environmental considerations such as waste management, emissions control, and energy efficiency should be taken into account to minimize environmental impact. Recycling and proper disposal of metalworking fluids, chips, and by-products are essential to reduce environmental pollution and ensure sustainable practices in the industry.
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