Micro & Fine Diameter Solid Tungsten Carbide Rods | Ultra-Fine Carbide Pin Rods & Blanks for PCB
$37.98
Ultra-Precision Micro-Drilling & Extreme Flexural Strength! ⚡🔬
Engineered for semiconductor test probe manufacturers, medical micro-tool makers, and PCB micro-drill fabricators, Panda Carbide Technology CO., LTD. supplies premium Micro & Fine Diameter Solid Tungsten Carbide Rods ( Φ 0.04 mm - Φ 3.0 mm .Manufactured from 100 % virgin ultra-fine/nano-grain tungsten carbide powder ( 0.2 - 0.6 μm ) and processed via Overpressure HIP Sintering ( 1,450 °C ) to achieve an ISO 4499 A00 porosity rating, our micro carbide pin rods deliver extraordinary transverse rupture strength ( >4,200 MPa ) and high hardness ( >92.5 HRA ). Featuring exceptional straightness ( ≤ 0.002 mm/100mm ) and fine-ground h5/h6 OD tolerances, Panda Carbide pin rods prevent drill deflection, micro-breakage, and hole burrs during high-speed PCB drilling ( >150,000 RPM ).
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1. Technical Specifications & Custom Configurations (Product Specs)
2. Grade Selection Guide for Micro Tooling & PCB Drilling
Select the optimal micro-grain carbide grade based on tool diameter and machining speed:
1. Nano-Grain Micro Grade (12% Cobalt — Ultimate Fracture Toughness for Micro Drills):
Grain Size: 0.2 - 0.4 μm | Hardness: 92.8 HRA | TRS: >4,500 MPa
Best For: PCB micro drills ( Φ 0.1 - 0.35 mm), medical surgical needles, and micro-punches.
Key Advantage: Extremely high transverse rupture strength prevents drill snap and flexural fracture under high-feed micro-drilling.
2. Ultra-Fine Grain Grade (10% Cobalt — High Wear Resistance for PCB Routers):
Grain Size: 0.4 - 0.6 μm | Hardness: 93.2 HRA | TRS: >4,200 MPa
Best For: PCB routing cutters, IC packaging test pins, and 3C electronic micro end mills.
Key Advantage: High hardness maintains razor-sharp cutting edges, reducing burr formation on FR-4 fiberboard and copper laminate.
3. Super-Hard Nano Grade (6% Cobalt — Semiconductor Test Probes):
Grain Size: <0.3 μm | Hardness: 94.2HRA | TRS: >3,900 MPa
Best For: Semiconductor IC test socket pins, burn-in test probes, and precision ejector pins.
3. Core Technical Advantages & Engineering Highlights
Extreme Straightness Control ( ≤ 0.002 mm ): Specialized tension-free centerless grinding ensures zero rod warping, enabling smooth feeding in high-speed CNC Swiss lathes and tool grinders.
Nano-Grain Homogeneity: 100 % virgin nano-grain powder eliminates cobalt pooling and grain growth, guaranteeing razor-sharp micro-cutting edges without flaking.
Overpressure HIP Sintered Micro-Purity: Processed to ISO 4499 A00 porosity rating, eliminating internal micro-pits that cause fatigue failure in micro-diameter pins.
4. Technical Q&A
Q: Why are nano-grain tungsten carbide pin rods required for manufacturing PCB micro drills under 0.3mm diameter?
A: Micro-drilling PCB circuit boards at speeds exceeding 150,000 RPM subjects tiny drill bits to intense flexural stress and abrasive glass fiber wear. Standard carbide grades contain larger grain sizes ( >0.8 μm ) that lead to premature edge chipping and drill breakage. Nano-grain tungsten carbide pin rods ( 0.2 - 0.4 μm ) from Panda Carbide Technology CO., LTD. provide extraordinary transverse rupture strength ( >4,500 MPa ) and high hardness ( >92.8 HRA ). This allows drill manufacturers to grind razor-sharp cutting edges that resist breakage, reduce hole burrs, and extend drill life during high-density interconnection (HDI) PCB fabrication.
5. Call to Action (CTA)
Elevate Your Micro-Tool Precision & Reduce Drill Snap Rates! Looking for defect-free micro tungsten carbide pin rods for your PCB drill, semiconductor probe, or medical tool production? Panda Carbide Technology CO., LTD. provides custom micro-diameters, precision h5/h6 ground tolerances, and cut-to-length blanks.
📧 Email: info@pandacarbide.com
🌐 Website: www.pandacarbide.com
