Graphite Electrodes Type UHP (COVATM) and Graphite Nipples Type UHP (COVATM - TRIX)
Diameter length and thread machined according to international standards:
IEC 60239 (fourth edition, 2005) or DIN 60239 (2006-03), in special cases NEMA CG1 (2001) or JIS R 7201 (2001)
GRAPHITE ELECTRODES |
GRAPHITE NIPPLES | ||||||
Property |
Unit |
Nom. ø 350 - 500 mm |
Nom. ø 550 - 600 mm |
||||
min. |
max. |
min. |
max. |
min. |
max. |
||
Apparent Density DIN 51 918 |
[g/cm³] |
1,65 |
1,75 |
1,65 |
1,75 |
1,75 |
1,86 |
Specific Electrical Resistance* DIN 51 911 |
[Ω.µm] |
4,6 |
5,8 |
4,6 |
5,8 |
3,0 |
4,5 |
Bending Strength* DIN 51 902 |
[MN/m²] |
9 |
14 |
9 |
14 |
20 |
30 |
Thermal Conductivity* DIN 51 908 (20 °C) |
[W/m.K] |
160 |
230 |
160 |
230 |
220 |
300 |
Open Porosity DIN 51 918 |
[%] |
14 |
22 |
14 |
22 |
8 |
15 |
Young's Modulus* DIN 51 934 / 51 915 |
[GN/m²] |
9 |
15 |
9 |
14 |
19 |
28 |
CTE* (20 - 120 °C)* DIN 51 909 |
[10-6/K] |
0,4 |
1,0 |
0,4 |
0,9 |
0,2 |
0,9 |
* measured values of anisotropic properties in longitudinal direction