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Planetary Micro Mill
PULVERISETTE 7
classic linePlease note: For the Planetary Micro Mill PULVERISETTE 7 classic line, you require at least 2 grinding bowls of your choice and the corresponding number of grinding balls. The grinding bowl material must also be harder than the material to be ground. In normal cases, grinding bowls and balls of the same material are used. To shorten the grinding time, grinding bowls and balls with a higher density and correspondingly higher impact energy can be used. Please take note of the useful capacity, this is not identical with the bowl volume!
GRINDING BOWLS
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Material data for grinding bowls / balls
Material Main component of the material Density g/cm³ Abrasion resistance Used for grinding material Agate SiO2 2.65 good soft to medium-hard samples Sintered corundum Al2O3(99.7 %) 3.8 moderately good medium-hard, fibrous samples Silicon nitride Si3N4 3.25 extremely good abrasive samples, metal-free grinding Zirconium oxide ZrO2 5.7 very good fibrous, abrasive samples Hardened, stainless steel Fe – Cr - Ni 7.7 good hard, medium-hard, brittle samples Hardmetal tungsten carbide WC 14.3 very good hard, abrasive samples Polypropylene 0.9 sufficient for homogenisation -
Recommended number of balls per grinding bowl
Grinding balls ≥ 5 mm
Recommended number of balls per bowlGrinding bowl/
Useful capacity (grinding material)12 ml
0,5 – 5 ml45 ml
3 – 20 mlBalls diameter 15 mm 7 10 mm 6 18 5 mm 50 180 Grinding balls ≤ 3 mm
Recommended ball mass per grinding bowl in gramsGrinding bowl/
Useful capacity (grinding material)12 ml
0.5 - 5 ml45 ml
3 - 20 mlMaterial Zirconium oxide 20 g 70 g Hardened, stainless steel 30 g 90 g Hardmetal tungsten carbide 50 g 200 g -
Additional Information
Grinding balls with diameter 3 mm and smaller must be weighed out. The above table provides you with the necessary weight to be included per grinding bowl.
The specified ball filling per bowl is the minimum quantity and should possibly be increased depending on the material properties. The useful capacity depends on the type of material. In exceptional cases, the number of grinding balls can be reduced by up to 15 %. However, increased abrasion should be expected. In general, smaller grinding balls achieve finer grinding results.
In normal cases, grinding bowls and balls of the same material are used. To shorten the grinding time, grinding bowls and balls with a higher density and correspondingly higher impact energy can be used.
Please select 2 grinding bowls, which are offered in the sizes 45 ml and 12 ml to perfectly match your sample volume. The useful capacity of the grinding bowls can be found in the selection aid.
For the best grinding results in each individual case, all grinding bowls are available in 7 different materials, thus directly preventing contamination of the samples as a result of undesired abrasion.
GRINDING BOWL 45 ML VOLUME
Grinding bowl with lid and seal ring
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 0.300 kg
General material specification:
Material: agate - SiO2
Abrasion resistance: good
Suitable for: soft to medium-hard samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Agate – SiO2 |
| Chemical composition | |
| Element | Share % |
| Silicon oxide– SiO2 | 99.9 |
| Aluminium – Al2O3 | < 0.02 |
| Iron oxide – Fe2O3 | < 0.02 |
| Calcium oxide – CaO | < 0.02 |
| Magnesium oxide – MgO | < 0.02 |
| Sodium oxide – Na2O | < 0.02 |
| Potassium oxide – K2O | < 0.02 |
| Manganese oxide – MnO | < 0.02 |
| Physical and mechanical properties | |
| Density | 2.65 g/cm³ |
| Hardness | 6.5 – 7 Mohs |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 0.350 kg
General material specification:
Material: sintered corundum 1 - 99.7 % Al2O3
Abrasion resistance: fairly good
Suitable for: medium-hard, fibrous samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Sintered corundum 1 – Al2O3 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Aluminium oxide – Al2O3 | 99.651 |
| Silicon oxide – SiO2 | 0.257 |
| Calcium oxide – CaO | 0.081 |
| Other | 0.011 |
| Physical and mechanical properties | |
| Density | 3.8 g/cm³ |
| Hardness | 18.000N/mm² (Vickers HV 0.5) |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 0.350 kg
General material specification:
Material: silicon nitride - Si3N4
Abrasion resistance: excellent
Suitable for: abrasive samples, metal-free grinding
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Silicon nitride - Si3N4 |
| ISO/EN/DIN code | SNCB5 |
| Chemical composition | |
| Element | Share % |
| Al2 O3 Y2 O3 | 9 |
| Si3 N4 | 91 |
| Physical and mechanical properties | |
| Density | 3.25 g/cm³ |
| Hardness | 91.1 HRA |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 0.500 kg
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Zirconium oxide - ZrO2 |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide – ZrO2 | 94.2 - 95.2 |
| Hafnium oxide – HfO2 | 1 - 2 |
| Magnesium oxide – MgO | 3.5 |
| Silicon dioxide – SiO | 0.1 |
| Aluminium oxide – Al2O3 | 0.1 |
| Other | 0.1 |
| Physical and mechanical properties | |
| Density | 5.7 g/cm³ |
| Hardness Vickers | 1200 (HV10) |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 0.700 kg
General material specification:
Material: hardened, stainless steel - Fe-Cr
Abrasion resistance: good
Suitable for: hard, medium-hard, brittle samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 1.100 kg
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 93.8 |
| Cobalt – Co | 6.0 |
| Other | 0.2 |
| Physical and mechanical properties | |
| Density | 14.95 g/cm³ |
| Hardness | 92.1 HRA |
Explanations on hardness data
Disposable bowl with screw lid
Grinding bowl volume: 45 ml
Useful capacity: 3 … 20 ml
Weight net: 0.013
General material specification:
Material: polypropylene - PP
Suitable for: homogenisation
Density: 0.895 - 0.92 g/cm³
Bowl adapter made of aluminium to insert the disposable bowl with screw cap made of polypropylene for homogenisation.
REPLACEMENT SEAL RING PTFE FOR GRINDING BOWLS 45 ML VOLUME
Replacement seal ring made of PTFE, 50/40 mm dia. for all grinding bowls 45 ml volume.
| General specifications | |
| Material | PTFE |
| CAS Number | 9002-84-0 |
| Chemical composition | ||||
| Element | Formula | |||
| Polytetrafluoroethylene | C 2F4 | |||
| Melting point | 327° C | |||
| Max. application temp. constant | 260° C | |||
| Max. application temp. briefly | 300° C | |||
| Physical and mechanical properties | |
| Density | 2.16 g /cm³ |
| Ball pressure hardness | ISO 868, ISO 2039-2, D 55 Shore |
GRINDING BOWL 12 ML VOLUME
Grinding bowl with lid and seal ring
Grinding bowl volume: 12 ml
Useful capacity: 0.5 … 5 ml
Weight net: 0.150 kg
General material specification:
Material: agate - SiO2
Abrasion resistance: good
Suitable for: soft to medium-hard samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Agate – SiO2 |
| Chemical composition | |
| Element | Share % |
| Silicon oxide– SiO2 | 99.9 |
| Aluminium – Al2O3 | < 0.02 |
| Iron oxide – Fe2O3 | < 0.02 |
| Calcium oxide – CaO | < 0.02 |
| Magnesium oxide – MgO | < 0.02 |
| Sodium oxide – Na2O | < 0.02 |
| Potassium oxide – K2O | < 0.02 |
| Manganese oxide – MnO | < 0.02 |
| Physical and mechanical properties | |
| Density | 2.65 g/cm³ |
| Hardness | 6.5 – 7 Mohs |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 12 ml
Useful capacity: 0.5 … 5 ml
Weight net: 0.250 kg
General material specification:
Material: sintered corundum 1 - 99.7 % Al2O3
Abrasion resistance: fairly good
Suitable for: medium-hard, fibrous samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Sintered corundum 1 – Al2O3 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Aluminium oxide – Al2O3 | 99.651 |
| Silicon oxide – SiO2 | 0.257 |
| Calcium oxide – CaO | 0.081 |
| Other | 0.011 |
| Physical and mechanical properties | |
| Density | 3.8 g/cm³ |
| Hardness | 18.000N/mm² (Vickers HV 0.5) |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 12 ml
Useful capacity: 0.5 … 5 ml
Weight net: 0.200 kg
General material specification:
Material: silicon nitride - Si3N4
Abrasion resistance: excellent
Suitable for: abrasive samples, metal-free grinding
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Silicon nitride - Si3N4 |
| ISO/EN/DIN code | SNCB5 |
| Chemical composition | |
| Element | Share % |
| Al2 O3 Y2 O3 | 9 |
| Si3 N4 | 91 |
| Physical and mechanical properties | |
| Density | 3.25 g/cm³ |
| Hardness | 91.1 HRA |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 12 ml
Useful capacity: 0.5 … 5 ml
Weight net: 0.400 kg
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Zirconium oxide - ZrO2 |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide – ZrO2 | 94.2 - 95.2 |
| Hafnium oxide – HfO2 | 1 - 2 |
| Magnesium oxide – MgO | 3.5 |
| Silicon dioxide – SiO | 0.1 |
| Aluminium oxide – Al2O3 | 0.1 |
| Other | 0.1 |
| Physical and mechanical properties | |
| Density | 5.7 g/cm³ |
| Hardness Vickers | 1200 (HV10) |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 12 ml
Useful capacity: 0.5 … 5 ml
Weight net: 0.500 kg
General material specification:
Material: hardened, stainless steel - Fe - Cr
Abrasion resistance: good
Suitable for: hard, medium-hard, brittle samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
Grinding bowl with lid and seal ring
Grinding bowl volume: 12 ml
Useful capacity: 0.5 … 5 ml
Weight net: 1.000 kg
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
Detailed information about the material you will find in the element analysis.
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
REPLACEMANT SEAL RING FOR GRINDING BOWL 12 ML VOLUME
Replacement seal ring made of PTFE, 37/26 mm dia. for all grinding bowls 12 ml volume.
| General specifications | |
| Material | PTFE |
| CAS Number | 9002-84-0 |
| Chemical composition | ||||
| Element | Formula | |||
| Polytetrafluoroethylene | C 2F4 | |||
| Melting point | 327° C | |||
| Max. application temp. constant | 260° C | |||
| Max. application temp. briefly | 300° C | |||
| Physical and mechanical properties | |
| Density | 2.16 g /cm³ |
| Ball pressure hardness | ISO 868, ISO 2039-2, D 55 Shore |
GRINDING BALLS
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Material data for grinding bowls / balls
Material Main component of the material Density g/cm³ Abrasion resistance Used for grinding material Agate SiO2 2.65 good soft to medium-hard samples Sintered corundum Al2O3(99.7 %) 3.8 moderately good medium-hard, fibrous samples Silicon nitride Si3N4 3.25 extremely good abrasive samples, metal-free grinding Zirconium oxide ZrO2 5.7 very good fibrous, abrasive samples Hardened, stainless steel Fe – Cr - Ni 7.7 good hard, medium-hard, brittle samples Hardmetal tungsten carbide WC 14.3 very good hard, abrasive samples Polypropylene 0.9 sufficient for homogenisation -
Size of the grinding balls
Type of sample material Suitable ball diameter Hard samples with a maximum feed size of ≤ 5 mm 15 mm or 10 mm Fine material 0.5 mm 10 mm or smaller Homogenisation of dry or liquid samples 10 mm or smaller -
Recommended number of balls per grinding bowl
Grinding balls ≥ 5 mm
Recommended number of balls per bowlGrinding bowl/
Useful capacity (grinding material)12 ml
0,5 – 5 ml45 ml
3 – 20 mlBalls diameter 15 mm 7 10 mm 6 18 5 mm 50 180 Grinding balls ≤ 3 mm
Recommended ball mass per grinding bowl in gramsGrinding bowl/
Useful capacity (grinding material)12 ml
0.5 - 5 ml45 ml
3 - 20 mlMaterial Zirconium oxide 20 g 70 g Hardened, stainless steel 30 g 90 g Hardmetal tungsten carbide 50 g 200 g -
Additional Information
Grinding balls with diameter 3 mm and smaller must be weighed out. The above table provides you with the necessary weight to be included per grinding bowl.
The specified ball filling per bowl is the minimum quantity and should possibly be increased depending on the material properties. The useful capacity depends on the type of material. In exceptional cases, the number of grinding balls can be reduced by up to 15 %. However, increased abrasion should be expected. In general, smaller grinding balls achieve finer grinding results.
In normal cases, grinding bowls and balls of the same material are used. To shorten the grinding time, grinding bowls and balls with a higher density and correspondingly higher impact energy can be used.
For achieving best grinding results grinding balls are available in 0.1 - 15 mm diameters and in 6 different materials, thus directly preventing contamination of the samples as a result of undesired abrasion. The recommended number of balls per grinding bowl can be found in the selection aid.
GRINDING BALLS 15 MM DIAMETER FOR GRINDING BOWLS 45 ML
General material specification:
Material: agate - SiO2
Abrasion resistance: good
Suitable for: soft to medium-hard sample
| General specifications | |
| Material | Agate – SiO2 |
| Chemical composition | |
| Element | Share % |
| Silicon oxide– SiO2 | 99.9 |
| Aluminium – Al2O3 | < 0.02 |
| Iron oxide – Fe2O3 | < 0.02 |
| Calcium oxide – CaO | < 0.02 |
| Magnesium oxide – MgO | < 0.02 |
| Sodium oxide – Na2O | < 0.02 |
| Potassium oxide – K2O | < 0.02 |
| Manganese oxide – MnO | < 0.02 |
| Physical and mechanical properties | |
| Density | 2.65 g/cm³ |
| Hardness | 6.5 – 7 Mohs |
Explanations on hardness data
General material specification:
Material: sintered corundum 1 - 99.7 % Al2O3
Abrasion resistance: fairly good
Suitable for: medium-hard, fibrous samples
| General specifications | |
| Material | Sintered corundum 1 – Al2O3 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Aluminium oxide – Al2O3 | 99.651 |
| Silicon oxide – SiO2 | 0.257 |
| Calcium oxide – CaO | 0.081 |
| Other | 0.011 |
| Physical and mechanical properties | |
| Density | 3.8 g/cm³ |
| Hardness | 18.000N/mm² (Vickers HV 0.5) |
Explanations on hardness data
General material specification:
Material: silicon nitride - Si3N4
Abrasion resistance: excellent
Suitable for: abrasive samples, metal-free grinding
| General specifications | |
| Material | Silicon nitride - Si3N4 |
| ISO/EN/DIN code | SNCB5 |
| Chemical composition | |
| Element | Share % |
| Al2 O3 Y2 O3 | 12.5 |
| Si3 N4 | 86.5 |
| Other | 1.00 |
| Physical and mechanical properties | |
| Density | 3.25 g/cm³ |
| Hardness | 91.1 HRA |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
| General specifications | |
| Material | Zirconium oxide - ZrO2 |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide – ZrO2 | 94.2 - 95.2 |
| Hafnium oxide – HfO2 | 1 - 2 |
| Magnesium oxide – MgO | 3.5 |
| Silicon dioxide – SiO | 0.1 |
| Aluminium oxide – Al2O3 | 0.1 |
| Other | 0.1 |
| Physical and mechanical properties | |
| Density | 5.7 g/cm³ |
| Hardness Vickers | 1200 (HV10) |
Explanations on hardness data
General material specification:
Material: hardened, stainless steel - Fe-Cr
Abrasion resistance: good
Suitable for: medium-hard, brittle samples
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
GRINDING BALLS 10 MM DIAMETER FOR GRINDING BOWLS 45 ML, 12 ML
General material specification:
Material: agate - SiO2
Abrasion resistance: good
Suitable for: soft to medium-hard sample
Grinding balls made of agate with 10 mm dia. are also recommended as sieving aid for dry sieving of material with a high proportion of fine particles.
Recommended number per sieve: 10 pieces.
| General specifications | |
| Material | Agate – SiO2 |
| Chemical composition | |
| Element | Share % |
| Silicon oxide– SiO2 | 99.9 |
| Aluminium – Al2O3 | < 0.02 |
| Iron oxide – Fe2O3 | < 0.02 |
| Calcium oxide – CaO | < 0.02 |
| Magnesium oxide – MgO | < 0.02 |
| Sodium oxide – Na2O | < 0.02 |
| Potassium oxide – K2O | < 0.02 |
| Manganese oxide – MnO | < 0.02 |
| Physical and mechanical properties | |
| Density | 2.65 g/cm³ |
| Hardness | 6.5 – 7 Mohs |
Explanations on hardness data
General material specification:
Material: sintered corundum 1 - 99.7 % Al2O3
Abrasion resistance: fairly good
Suitable for: medium-hard, fibrous samples
| General specifications | |
| Material | Sintered corundum 1 – Al2O3 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Aluminium oxide – Al2O3 | 99.651 |
| Silicon oxide – SiO2 | 0.257 |
| Calcium oxide – CaO | 0.081 |
| Other | 0.011 |
| Physical and mechanical properties | |
| Density | 3.8 g/cm³ |
| Hardness | 18.000N/mm² (Vickers HV 0.5) |
Explanations on hardness data
General material specification:
Material: silicon nitride - Si3N4
Abrasion resistance: excellent
Suitable for: abrasive samples, metal-free grinding
| General specifications | |
| Material | Silicon nitride - Si3N4 |
| ISO/EN/DIN code | SNCB5 |
| Chemical composition | |
| Element | Share % |
| Al2 O3 Y2 O3 | 12.5 |
| Si3 N4 | 86.5 |
| Other | 1.00 |
| Physical and mechanical properties | |
| Density | 3.25 g/cm³ |
| Hardness | 91.1 HRA |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
| General specifications | |
| Material | Zirconium oxide - ZrO2 |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide – ZrO2 | 94.2 - 95.2 |
| Hafnium oxide – HfO2 | 1 - 2 |
| Magnesium oxide – MgO | 3.5 |
| Silicon dioxide – SiO | 0.1 |
| Aluminium oxide – Al2O3 | 0.1 |
| Other | 0.1 |
| Physical and mechanical properties | |
| Density | 5.7 g/cm³ |
| Hardness Vickers | 1200 (HV10) |
Explanations on hardness data
General material specification:
Material: hardened, stainless steel - Fe-Cr
Abrasion resistance: good
Suitable for: hard, medium-hard, brittle samples
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
GRINDING BALLS 5 MM DIAMETER FOR GRINDING BOWLS 45 ML, 12 ML
General material specification:
Material: agate - SiO2
Abrasion resistance: good
Suitable for: soft to medium-hard sample
100 grinding balls made of agate with 5 mm dia. weigh approx. 17 g. With the weight information, the high number of balls per grinding bowl can be determined by weighing.
Grinding balls made of agate with 5 mm dia. are also recommended as sieving aid for dry sieving of material with a high proportion of fine particles.
Recommended number per sieve: 15 pieces.
| General specifications | |
| Material | Agate – SiO2 |
| Chemical composition | |
| Element | Share % |
| Silicon oxide– SiO2 | 99.9 |
| Aluminium – Al2O3 | < 0.02 |
| Iron oxide – Fe2O3 | < 0.02 |
| Calcium oxide – CaO | < 0.02 |
| Magnesium oxide – MgO | < 0.02 |
| Sodium oxide – Na2O | < 0.02 |
| Potassium oxide – K2O | < 0.02 |
| Manganese oxide – MnO | < 0.02 |
| Physical and mechanical properties | |
| Density | 2.65 g/cm³ |
| Hardness | 6.5 – 7 Mohs |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
100 grinding balls made of zirconium oxide with 5 mm dia. weigh approx. 38 g.
With the weight information, the high number of balls per grinding bowl can be determined by weighing.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: hardened, stainless steel - Fe-Cr
Abrasion resistance: good
Suitable for: hard, medium-hard, brittle samples
100 grinding balls made of hardened, stainless steel with 5 mm dia. weigh approx. 52 g.
With the weight information, the high number of balls per grinding bowl can be determined by weighing.
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
100 grinding balls made of hardmetal tungsten carbide with 5 mm dia. weigh approx. 97 g. With the weight information, the high number of balls per grinding bowl can be determined by weighing.
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
GRINDING BALLS ≤ 3 MM DIAMETER FOR GRINDING BOWLS 45 ML, 12 ML (100 G PACKAGE)
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Grinding balls made of zirconium oxide with 3 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Grinding balls made of zirconium oxide with 2 mm dia. are packed in 100 g units and must be weight out. In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Grinding balls made of zirconium oxide with 1.5 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Grinding balls made of zirconium oxide with 1 mm dia. are packed in 100 g units and must be weight out. In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Grinding balls made of zirconium oxide with 0.5 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: zirconium oxide - ZrO2
Abrasion resistance: very good
Suitable for: fibrous, abrasive samples
Grinding balls made of zirconium oxide with 0.1 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Zirconium oxide ZrO2 |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Zirconium oxide - ZrO2 | 95% |
| Yttrium oxide -Y2O3 | 5% |
| Physical and mechanical properties | |
| Density | 6.0 g/cm³ |
| Hardness Vickers | 1300 (HV10) |
Explanations on hardness data
General material specification:
Material: hardened, stainless steel - Fe-Cr
Abrasion resistance: good
Suitable for: hard, medium-hard, brittle samples
Grinding balls made of hardened, stainless steel with 3 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
General material specification:
Material: hardened, stainless steel - Fe-Cr
Abrasion resistance: good
Suitable for: hard, medium-hard, brittle samples
Grinding balls made of hardened, stainless steel with 1 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | hardened stainless steel – 1.4125 |
| ISO/EN/DIN code | X105CrMo17 |
| Chemical composition | |
| Element | Share % |
| Iron– Fe | 81.4 |
| Chromium – Cr | 17 |
| Carbon – C | 1.1 |
| Molybdenum – Mo | 0.5 |
| Physical and mechanical properties | |
| Density | 7.7 kg/dm³ |
| Hardness | ~ 60 HRC |
Explanations on hardness data
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
Grinding balls made of hardmetal tungsten carbide with 3 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
Grinding balls made of hardmetal tungsten carbide with 1.6 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
General material specification:
Material: hardmetal tungsten carbide - WC
Abrasion resistance: very good
Suitable for: hard, abrasive samples
Grinding balls made of hardmetal tungsten carbide with 0.6 mm dia. are packed in 100 g units and must be weight out.
In the selection aid you can find the required mass per grinding bowl.
| General specifications | |
| Material | Tungsten carbide - WC |
| ISO/EN/DIN code | |
| Chemical composition | |
| Element | Share % |
| Tungsten carbide – TC | 88 |
| Cobalt – Co | 12 |
| Physical and mechanical properties | |
| Density | 14.3 g/cm³ |
| Hardness | 89.7 HRA |
Explanations on hardness data
Certification
IQ/OQ documentation for the independent utilization for the support of instrument qualification in the quality management system for the Planetary Micro Mill PULVERISETTE 7 classic line.
Certification
IQ/OQ documentation (questionnaire format - implementation by customer) for the independent utilization for the support of instrument qualification in the quality management system for the Planetary Micro Mill PULVERISETTE 7 classic line.
