mg steel
Steel rolling bearings – spindle, angular contact and thin-section, hybrid on request – plus ceramic, tungsten carbide and steel compared.
mg steel · Steel as a material
Not every bearing arrangement needs full ceramics. Under mg steel we supply classic steel rolling bearings — and below them the direct material comparison of ceramics, tungsten carbide and steel: lower weight, higher hardness and a significantly higher service temperature.
Bearings from the mg steel range
Alongside ceramics we supply classic steel rolling bearings — on request as hybrid bearings with ceramic rolling elements.
Mechanical & thermal properties compared
| Characteristic | Ceramics | Tungsten 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 (tensile) |
| 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 ×10⁻⁶/°C | 5 ×10⁻⁶/°C | 12.5 ×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 |
The table shows typical material properties and serves as a comparison. These are not absolute engineering data for which we assume legal responsibility.
Reduce failures, maintenance and downtime.
Let us check together whether ceramic or hybrid solutions can lower your operating costs — with individual advice instead of a datasheet overload.