Tungsten ball, AI203, Si3N4, Zr02...
(+33) 4 77 90 51 29
The choice of ball material is made according to the physical and mechanical properties sought. The characteristics of the main ceramics used in the manufacture of logs as well as those of tungsten carbides and other hard materials are described in the following document. For more information, please contact us.
Due to their relatively high cost, hard material balls are usually not available in very large diameters, but in theory they can be made in the same diameters as those of steel & stainless steel balls and sometimes even in smaller diameters. Don't hesitate to contact us.
The high hardness of the hard material beads makes it possible to obtain them very precisely. They are generally performed in grades 10 or 24 according to the following standards: – DIN 5401 (German), – ANSI/ABMA (American) – and ISO 3290 (European). Regardless of the standard used, the essential control points are the same and there are equivalences between standards.
Ceramic bill
We also sell precision balls in raw materials less common than those detailed in our section of precision steel and stainless steel beads.
These are mainly the tungsten balls, ceramic balls Al2O3, Si3N4 or ZrO2, ruby beads or sapphire balls, but this list is not exhaustive.
Their applications are generally more advanced and our stock is smaller.
To find out the diameters available in these raw materials, please consult us.
| Characteristics | Ceramic Al2O3 | Ceramic ZrO2 | Ceramic Si3N4 | Rubs | Sapphire | Tungsten Carbide Cobalt Bint K20 | Tungsten carbide Nickel binder |
|---|---|---|---|---|---|---|---|
| Colour | white | white | Dark grey/black | red | transparent | Colour steel | Colour steel |
| Chemical formula | Al2O3 | ZrO2 | Si3N4 | Al2O3 / CrO3 | Al2O3 | WC/Co | WC/Ni |
| Purity | 99,80% | 95% ZrO2 / 5% Y2O3 | 90% | 99% Al2O3 / 1% CrO3 | 99,99% | 94% WC / 6% Co | 94% WC / 6% Ni |
| Density (g/cm3) | 3,85 | 6,05 | 3,22 | 3,98 | 3,98 | 14,95 | 14,95 |
| Hardness (HV) | 1800 | 1100 | 1600 | 1570-2170 | 1800-2200 | 1550 | 1570 |
| Compression resistance (Mpa) | 2500 | 4000 | 3800 | 2100 | 2400 | 5300 | 5300 |
| Resistance to bending (Mpa) | 350 | 1200 | 1000 | 390 | 390 | 1900 | 1900 |
| Resilience | 1 to 3 | 4-9 | 4-7 | 1 | 1 | – | – |
| Elasticity module (Gpa) | 400 | 200 | 310 | 440 | 440 | 610 | 610 |
| Coef. Thermal expansion | 5,5 | 10 | 3,2 | 4,5 | 5,3 | 5,5 | 5,5 |
| Thermal conductivity (W/m.k) | 29 | 2 | 40 | 36 | 36 | 80 | 80 |
| Thermal capacity (d/kg.K) | 900 | 500 | 700 | 755 | 755 | 200 | 200 |
| Maximum temperature of use (°C) | 1500 | 1000 | 1200 | 1800 | 1800 | 1600 | 1600 |
Our sales department will answer you as soon as possible!
Monday to Thursday: From 8:30 to 12:30 and from 13:30 to 17:30
Friday : From 8:30am to 12:30pm and from 1:30pm to 4:30pm
3, rue de l'Artisanat,
Moulin du Gillier Industrial Zone
42290 Sorbers, FRANCE
Tel: (+33) 4 77 90 51 29
Mail: contact@marteau-lemarie.com
3, rue de l'Artisanat
Moulin du Gillier Industrial Zone
42290 Sorbers, FRANCE
+33477905129
contact@marteau-lemarie.com
