STS STU65 10.0xD10x25x75
STS STU65 10.0xD10x25x75 is a 65 HRC solid carbide end mill for CNC machining of hardened steel, D2, and tool steel. With a 10 mm diameter and 25 mm flute length, it delivers stable cutting, good surface finish, and reliable tool life. Ideal for die & mould, automotive, and precision engineering applications, it ensures consistent performance in high-hardness milling operations.
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Description
STS STU65 10.0xD10x25x75 is a precision solid carbide end mill engineered for CNC machining of hardened materials up to 65 HRC. Designed to deliver stable cutting performance, reliable tool life, and consistent surface finish, this end mill is well suited for die & mould machining, automotive components, aerospace tooling, and precision engineering applications. With a 10 mm cutting diameter, 25 mm flute length, and 75 mm overall length, it provides an excellent balance of rigidity and reach for semi-finishing and finishing operations in hardened steels.
Manufactured from premium micro-grain carbide rod, the STS STU65 series offers strong edge toughness, wear resistance, and thermal stability, enabling dependable performance during high-speed CNC milling. The tool is suitable for machining D2 tool steel, hardened P20, alloy steels, and other materials in the 55–65 HRC range commonly used in mould and die manufacturing. Its optimized cutting geometry reduces vibration and cutting forces, helping maintain tight tolerances and improved surface quality even in demanding machining conditions.
The D10 shank ensures secure clamping with low run-out, improving machining stability and minimizing chatter. The flute design supports efficient chip evacuation, reducing heat buildup and the risk of edge chipping during continuous cutting cycles. This makes the end mill suitable for a wide range of CNC operations including profile milling, pocketing, slotting, and contour machining on vertical machining centers and high-speed milling machines.
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The STS STU65 10.0xD10x25x75 is a dependable choice for CNC workshops seeking a cost-effective yet reliable hardened steel end mill. It is particularly suitable for regular production work, mould components, and precision parts, where consistent cutting behavior, controlled wear, and predictable results are essential for productivity and quality.
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