HRC55 Carbide End Mills

HRC55 Carbide End Mills

SUPSTTED HRC55 High-Performance End Mills: Conquer Hardened Steel

Push Machining Limits with Uncompromising Hardness Capability

Engineered for the toughest challenges, SUPSTTED's HRC55 End Mill series is your ultimate solution for machining hardened steels up to 55 HRC and other demanding materials. Crafted from premium micro-grain solid carbide and featuring a state-of-the-art AlTiN coating, these end mills deliver exceptional wear resistance, thermal stability, and fracture toughness right where you need it most.

Precision Engineered for Peak Performance:

• Solid Carbide Core: Maximizes rigidity and resistance to deflection, ensuring unwavering accuracy even under heavy loads in hardened materials.

• Advanced AlTiN Coating: Provides superior hardness, extreme heat resistance (up to 900°C), and reduced friction, drastically extending tool life in high-heat applications.

• Optimized Geometry: Precision-ground cutting edges and specialized flute designs (4 or 6 flutes available) ensure efficient chip evacuation, minimize built-up edge, and reduce cutting forces.

• Variable Helix/Pitch: Significantly dampens vibration and chatter, enabling smoother cuts, superior surface finishes, and protecting both the tool and your workpiece.

• Robust Corner Radii: Strengthens the cutting edge, preventing chipping and breakage during aggressive machining and interrupted cuts common in die/mold work.

Ideal Applications:

• Profiling, slotting, and finishing hardened tool steels (D2, H13, A2, etc.), alloy steels, and stainless steels (HRC 35-55+)

• Precision machining in demanding industries: Aerospace components, automotive dies & molds, medical device tooling, and general high-precision engineering.

• Situations requiring maximum tool life, reduced downtime for tool changes, and consistent high-quality surface finishes on hard materials.

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Experience the SUPSTTED Advantage:

• Extended Tool Life: AlTiN coating and robust design significantly outlast standard end mills in hard milling, reducing cost per part.

• Enhanced Productivity: Machine hardened materials faster and with greater confidence, minimizing interruptions.

• Superior Surface Finish: Achieve exceptional part quality with reduced vibration and precise cutting action.

• Reliable Performance: Engineered for predictable, consistent results in the most challenging conditions.

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Unlock new levels of efficiency and precision in your hard milling operations. Choose SUPSTTED HRC55 End Mills – Engineered for the Hardest Jobs.

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FAQ

Q1: What materials are HRC55 end mills designed to cut?
A1: HRC55 end mills are specifically engineered for machining hardened steels and alloys with a hardness of up to 55 HRC (Rockwell C scale). This includes materials like tool steels (D2, H13, A2), case-hardened steels, and certain stainless steels in their hardened state.

Q2: What cutting parameters (speed/feed) should I use for HRC55 end mills?
A2: Use conservative speeds and feeds due to material hardness. Typical starting points are:

• Cutting Speed (SFM): 100-250 SFM (30-80 m/min)

• Feed per Tooth (IPT): 0.001"-0.004" (0.03-0.10 mm/tooth)

• Axial Depth of Cut (DOC): ≤ 0.5 x Diameter

• Radial Width of Cut (WOC): ≤ 0.25 x Diameter
  Always consult the manufacturer's recommendations and adjust based on toolpath, machine rigidity, and coolant.

Q3: What is the typical tool life expectancy for an HRC55 end mill?
A3: Tool life varies significantly based on material, parameters, setup rigidity, and coolant. Under optimal conditions machining at 55 HRC, expect 60 to 120 minutes of cutting time before regrinding or replacement is needed. Monitor wear closely and prioritize consistent chip formation to maximize life.

Q4: Is coolant necessary when using HRC55 end mills?
A4: Yes, effective coolant/lubrication is critical. Use either:

• High-Pressure Flood Coolant: To penetrate the cut, reduce heat, flush chips, and prevent workpiece hardening.

• Minimum Quantity Lubrication (MQL): A precise oil mist can be effective if flood coolant isn't feasible.
  Avoid dry machining – excessive heat rapidly degrades the tool.

Q5: Why choose a 4-flute design over a 2-flute for HRC55 end mills?
A5: 4-flute end mills are generally preferred for HRC55 materials because:

• Increased Strength & Stability: More flutes provide greater core strength to resist deflection and chipping in hard materials.

• Smoother Finishes: More cutting edges often yield better surface finishes in finishing operations.

• Higher Feed Rates Potential: Allow higher table feeds at the same RPM compared to 2-flute tools.