{"id":2287,"date":"2026-01-12T06:00:01","date_gmt":"2026-01-12T06:00:01","guid":{"rendered":"https:\/\/hycuttingtools.com\/?post_type=product&p=2287"},"modified":"2026-09-08T15:05:54","modified_gmt":"2026-09-08T15:05:54","slug":"hrc45-hrc55-4-flute-solid-carbide-square-end-mill-for-steel","status":"publish","type":"product","link":"https:\/\/hycuttingtools.com\/fa\/product\/hrc45-hrc55-4-flute-solid-carbide-square-end-mill-for-steel\/","title":{"rendered":"HRC45-HRC55 4-Flute Solid Carbide Square End Mill for Steel"},"content":{"rendered":"
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HRC45\u2013HRC55 Carbide Square End Mill Overview<\/h2>\n

This HRC45\u2013HRC55-series 4-flute solid carbide square end mill is configured for stable side milling, shoulder milling, profiling, pocket finishing and selected light slotting in carbon steel, alloy steel, tool steel and pre-hardened steel. Its rigid four-flute core supports stable tooth engagement and productive finishing, while the square-end geometry produces flat-bottom features and defined 90\u00b0 shoulders. Coating and edge preparation can be selected according to the steel grade, hardness and machining conditions.<\/p>\n

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End Profile<\/span>Square \/ Flat End<\/span><\/div>\n
Flute Design<\/span>4 Flutes<\/span><\/div>\n
Diameter Range<\/span>\u00d81\u2013\u00d820 mm<\/span><\/div>\n
Application Range<\/span>HRC45\u2013HRC55*<\/span><\/div>\n<\/div>\n<\/section>\n

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Key Configuration<\/h3>\n
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Square-End Cutting Profile<\/h4>\n

Designed for flat-bottom pockets, defined slot features and accurate 90\u00b0 shoulders.<\/p>\n<\/div>\n

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Rigid Four-Flute Core<\/h4>\n

Four cutting edges support stable engagement, tool rigidity and productive finishing in steel.<\/p>\n<\/div>\n

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Steel-Matched Configuration<\/h4>\n

Carbide grade, edge preparation and coating can be selected for the confirmed steel hardness and cutting conditions.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Product Advantages<\/h3>\n
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4F<\/div>\n

Stable Tooth Engagement<\/h4>\n

Four flutes support consistent engagement during side milling and finishing.<\/p>\n<\/div>\n

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90\u00b0<\/div>\n

Defined Square Features<\/h4>\n

The square-end profile supports flat bottoms and controlled 90\u00b0 shoulders.<\/p>\n<\/div>\n

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\u25c6<\/div>\n

Precision-Ground Geometry<\/h4>\n

Controlled cutting edges support dimensional consistency and surface quality.<\/p>\n<\/div>\n

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H55<\/div>\n

Flexible Steel Range<\/h4>\n

Series options cover general and selected pre-hardened steel conditions.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Milling Operations<\/h3>\n

The four-flute square-end geometry is primarily configured for stable side cutting, shoulder machining and finishing. Final cutting conditions should be matched to tool diameter, flute length, workpiece hardness, engagement and machine rigidity.<\/p>\n

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Side Milling<\/strong>RECOMMENDED<\/span><\/div>\n
Shoulder Milling<\/strong>RECOMMENDED<\/span><\/div>\n
Profile Finishing<\/strong>RECOMMENDED<\/span><\/div>\n
Light Slotting<\/strong>CONDITIONAL<\/span><\/div>\n<\/div>\n
Operation Note:<\/strong> Full-width slotting, ramping and plunging should be confirmed according to the exact center-cutting geometry, tool diameter and chip-evacuation conditions.<\/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, tool and mold steels<\/td>\nConfirm grade and hardness<\/td>\n<\/tr>\n
H Pre-Hardened Steel<\/td>\nSelected pre-hardened steel conditions<\/td>\nApplication review required<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Material Note:<\/strong> HRC55 is the upper series target under selected conditions, not a universal guarantee for every steel grade or milling operation.<\/div>\n<\/section>\n

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

Product views and a reserved machining-video position for the HRC45\u2013HRC55 4-flute solid carbide square end mill.<\/p>\n

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