Zirconia nibs

Zirconia Ceramic Nib

Parameter Unit Typical Value (YSZ)
Material Composition — ZrO₂ + 3~8 mol% Y₂O₃
Color — Ivory / White
Density g/cm³ 6.00 ~ 6.05
Flexural Strength (Room Temp.) MPa 900 ~ 1200
Fracture Toughness MPa·m¹/² 6 ~ 9 (Standard) / 10 ~ 15 (Toughened)
Vickers Hardness HV0.5 / GPa 1200 ~ 1350 HV / ≈13 GPa
Elastic Modulus GPa 190 ~ 210
Thermal Expansion Coefficient (20~1000℃) ×10⁻⁶ /℃ 9.5 ~ 11.0
Thermal Conductivity (Room Temp.) W/(m·K) 2.0 ~ 3.0
Maximum Service Temperature (Long-Term) ℃ 800 ~ 1000
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Zirconia Ceramic Nib

Made from high-purity zirconia (ZrO₂) ceramic (Y-TZP or FSZ grades), produced via ceramic injection molding (CIM), high-temperature sintering, and precision grinding/polishing. Ideal for premium fountain pens, signature pens, electromagnetic styluses, and industrial markers, offering exceptional durability and stability.

Core Material Advantages:

  • Ultra-high hardness & wear resistance: near sapphire level, wear ≤1/10 of metal nibs
  • Excellent chemical resistance: unaffected by inks, sweat, or corrosives
  • Low thermal expansion: stable lines across temperature changes
  • Mirror finish: Ra ≤ 0.1 μm for reduced friction
  • Non-magnetic & anti-static: perfect for digital pens and clean environments

Typical Application Fields:

  • Premium fountain pens / calligraphy pens
  • Permanent signature / archival pens
  • Digital tablets / e-ink / electromagnetic styluses
  • Laboratory & cleanroom markers
  • Collectible & industrial precision tools

FAQ

Q1: Is it really “permanently wear-free”?

A: Nearly — wear is far lower than metal nibs; typical lifespan 10× longer under normal use (50–300 g pressure).

Q2: Main advantages over gold/stainless steel nibs?

A: Much higher wear & corrosion resistance, better dimensional stability, non-magnetic/anti-static — crisp feel vs. softer gold.

Q3: Why is it more expensive?

A: High-purity materials, precision CIM molding, sintering, and multi-step mirror polishing make costs several times higher than metal nibs.

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