Retsch DM 400 - Manual (Page 48)

Servicing
48
Material Max. guide
value tightening
torque (Nm) Density
g/cm³ Abrasion
resistance Use for sample
material
Hardened steel 11-
12% Cr At least 50 7.9 Good Hard, brittle samples
Manganese steel
12-13% Mn At least 50 7.9 - 8 Good Hard, brittle samples
Tungsten carbide
90.3% TC + 9.5%
CO At least 50 14.8 Very good Hard, abrasive sam-
ples
Zirconium oxide
92.5 ZrO
2
Approx. 20 5.9 Extremely good Medium hard, abrasive
samples for iron-free
grinding