Alloy Geek D2 Tool Steel Standard
Alloy D2, also known as tool steel D2 or ASTM A681 Type D2, is a high-carbon, high-chromium tool steel with excellent wear resistance, good toughness, and relatively high hardness. It is often used in applications where cutting, forming, or shaping materials are involved, such as in the production of cutting tools, dies, and punches.
The composition of Alloy D2 typically includes:
- Carbon (about 1.40-1.60%)
- Chromium (about 11.00-13.00%)
- Molybdenum (about 0.70-1.20%)
- Vanadium (about 0.15-0.30%)
- Silicon (about 0.10-0.60%)
- Manganese (about 0.20-0.60%)
- Small amounts of other elements like sulfur and phosphorus
Key features and characteristics of Alloy D2:
High Wear Resistance: Alloy D2 is known for its exceptional wear resistance due to its high carbon and chromium content, making it suitable for cutting and forming applications.
Hardness: The alloy can be heat treated to achieve high hardness levels, contributing to its wear resistance and cutting performance.
Toughness: Despite its high hardness, Alloy D2 also exhibits good toughness, which is important to resist chipping and breaking during use.
Applications: Alloy D2 is commonly used in making cold work tools like cutting dies, thread rolling dies, shear blades, stamping dies, and forming tools. It's also used in various industrial applications where wear resistance is critical.
Heat Treatment: Alloy D2 can be heat treated to optimize its properties. Common heat treatments include quenching and tempering to achieve desired hardness and toughness.
Machinability: Alloy D2 can be machined, but its hardness can make machining more challenging compared to lower-carbon steels.
Forms: Alloy D2 is available in various forms, including sheets, plates, bars, and forgings.
Due to its high wear resistance, hardness, and toughness, Alloy D2 is widely used in the manufacturing and toolmaking industries. It's important to consider the specific requirements of your application and the expected wear conditions to determine if Alloy D2 is the right choice. Consulting with materials experts or manufacturers can provide further guidance based on your intended use case.
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In summary, the main difference between a reference material and a certified reference material lies in the level of characterization, validation, and certification. CRMs have undergone a more comprehensive and rigorous testing process, resulting in certified values and uncertainties that can be confidently used for instrument calibration, quality control, and research. Reference materials, on the other hand, can provide a point of comparison but might not have the same level of certification and traceability as CRMs. When accuracy and traceability are critical, certified reference materials are preferred.