{"id":750,"date":"2025-10-27T17:03:01","date_gmt":"2025-10-27T17:03:01","guid":{"rendered":"https:\/\/hycuttingtools.com\/?post_type=product&p=750"},"modified":"2026-09-24T11:11:25","modified_gmt":"2026-09-24T11:11:25","slug":"hrc55-4-flute-altin-coated-solid-carbide-corner-radius-end-mill","status":"publish","type":"product","link":"https:\/\/hycuttingtools.com\/de\/produkt\/hrc55-4-flute-altin-coated-solid-carbide-corner-radius-end-mill\/","title":{"rendered":"HRC55 4-schneidiger, AlTiN-beschichteter Vollhartmetall-Eckradius-Schaftfr\u00e4ser f\u00fcr Stahl"},"content":{"rendered":"
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HRC55 4-Flute AlTiN-Coated Corner Radius End Mill Overview<\/h2>\n

This HRC55-series 4-flute solid carbide corner radius end mill is designed for stable roughing, semi-finishing and contour milling in carbon steel, alloy steel, tool steel and selected pre-hardened steel. Its reinforced corner radius provides greater edge strength than a sharp square corner while retaining a flat-bottom cutting profile. The four-flute geometry increases cutting-edge engagement and supports productive side milling, profiling and pocket machining, while the AlTiN coating improves heat and wear resistance under steel-milling conditions.<\/p>\n

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End Profile<\/span>Corner Radius<\/strong><\/div>\n
Flute Design<\/span>4 Flutes<\/strong><\/div>\n
Series<\/span>Bis zu HRC55<\/strong><\/div>\n
Beschichtung<\/span>AlTiN<\/strong><\/div>\n<\/div>\n<\/section>\n

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Key Configuration<\/h3>\n
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Reinforced Corner Radius<\/h4>\n

The radiused corner reduces local edge stress and chipping risk while maintaining a usable flat-bottom profile.<\/p>\n<\/div>\n

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Four-Flute Cutting Geometry<\/h4>\n

Four cutting edges support productive side milling, profiling and semi-finishing with stable engagement.<\/p>\n<\/div>\n

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AlTiN for Steel Milling<\/h4>\n

The heat-resistant coating helps protect the cutting edge during dry, air-blow or controlled-coolant machining.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Product Advantages<\/h3>\n
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R<\/div>\n

Stronger Corner<\/h4>\n

Improved corner strength compared with a sharp-edge square end mill.<\/p>\n<\/div>\n

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4F<\/div>\n

Productive Engagement<\/h4>\n

Four flutes provide more cutting contacts per revolution for stable steel milling.<\/p>\n<\/div>\n

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AlTiN<\/div>\n

Thermal Protection<\/h4>\n

AlTiN supports wear resistance under elevated cutting temperatures.<\/p>\n<\/div>\n

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H55<\/div>\n

Steel-Series Carbide<\/h4>\n

Micro-grain carbide is matched to general and pre-hardened steel applications.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Recommended Milling Operations<\/h3>\n

The corner-radius profile is particularly useful where a sharp corner is unnecessary and improved tool-edge reliability is preferred.<\/p>\n

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Side Milling<\/strong>RECOMMENDED<\/span><\/div>\n
Pocket Milling<\/strong>RECOMMENDED<\/span><\/div>\n
Contour Milling<\/strong>RECOMMENDED<\/span><\/div>\n
Semi-Finishing<\/strong>SUITABLE<\/span><\/div>\n<\/div>\n
Selection Note:<\/strong> Match the corner radius to the part fillet. The cutter cannot produce an internal corner radius smaller than its own R value.<\/div>\n<\/section>\n

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Workpiece Material Compatibility<\/h3>\n
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MATERIAL GROUP<\/th>\nEXAMPLES<\/th>\nAPPLICATION LEVEL<\/th>\n<\/tr>\n<\/thead>\n
P Carbon Steel<\/td>\nGeneral carbon and structural steels<\/td>\nPrimary application<\/td>\n<\/tr>\n
P Alloy & Tool Steel<\/td>\nAlloy steel, tool steel and mold steel<\/td>\nConfirm grade and hardness<\/td>\n<\/tr>\n
H Pre-Hardened Steel<\/td>\nSelected grades within the HRC55-series range<\/td>\nApplication review required<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Material Note:<\/strong> HRC55 is the series positioning rather than a universal limit for every steel grade, cutter diameter and milling operation. Confirm the actual material and hardness before selection.<\/div>\n<\/section>\n

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Product Details & Milling Demonstration<\/h3>\n
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\"HRC55