T9015: This is the most commonly used grade of CNC cutting tools. It is generally carbon steel with high durability and the most cost-effective, but the roughness is poor when turning small-diameter workpieces.
NS530: This is also the most commonly used grade of CNC cutting tools. When turning carbon steel, NS530 is much better than T9015 at the same cutting speed when turning small diameter workpieces. T9015 is more durable than NS530.
YL10.2 and K10 feel similar. The wear resistance is better than high-speed steel, but not as good as cemented carbide. The impact resistance is better than cemented carbide, but not as good as high-speed steel.
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