| 摘要 |
<p>A ball for ball-point pen and a ball-point pen using the ball excellent in wear resistance and lubricity and capable of being manufactured easily, wherein a stainless steel is used as a material and a nitrosulphurized layer is formed on the surface of the material to constitute the ball (2) for ball-point pen, or an aluminum chrome molybdenum steel is used as a material and the nitrosulphurized layer is formed on the surface of the material to constitute the ball (2) for ball-point pen, whereby a ball-point pen using the ball provides an excellent sharpness in writing.</p> |
