SPECIFICATIONS

Dimension and shape precision

Our size range of high-precision balls begins at 0.5 mm (grade 3) and goes up to 70 mm. and are also available in inch sizes. Please click here to download a list after DIN 5401:2002-08. For receiving a definition of well-established abbreviations please look at factsheet.

Test results

Please do not hesitate to inform us if you wish to receive corresponding test results along your products.
Please click here to find an example in English for the product 3MM GAo.4-S-HI from Toshiba.

Features	Silicon Nitride	Tungston Carbide	Steel
Density	3.23 g/cm³	14.95 g/cm³	7.8 g/cm³
Hardness	~ 76 HRc	~ 76 HRc	~ 60-67 HRc
Flexural Strength(3 pt. 20°C)	1000 MPa	2600 MPa	2000 MPa (Zug)
Compressive Strength	> 4000 MPa	6200 MPa	1400 MPa
Young's Modulus	310 GPa	650 GPa	205 GPa
Poisson's Ratio	0.27	0.22	0.29
Fracture Toughness	7 MPa-√m	12 MPa-√m	70 MPa-√m
Thermal Expansion	3.0 x 10-6/°C	5 x 10-6/°C	12.5 x 10-6/°C
Thermal Conductivity	22 W/m-°C	100 W/m-°C	37 W/m-°C
Specific Heat	0.68 J/g-°C	0.34 J/g-°C	0.50 J/g-°C
max. Service Temperature	1000 °C	450 °C	180 °C

Call Us0 59 31 88 54 85

SPECIFICATIONS

Dimension and shape precision

Test results

Selected mechanical and thermal properties

Call Us
0 59 31 88 54 85