Opaque Materials

Heraeus Opaque Quartz OM® -
the unique thermal management solution

Opaque Material

Heraeus Opaque Quartz OM® is a high purity opaque quartz glass. The proprietary technology results in a unique microporosity that provides superior thermal characteristics when compared to other opaque materials. Convince yourself and retain the heat of your world with Heraeus Opaque Quartz OM®.

To learn more follow the links below.

Heat blocking properties

Heat blocking properties

The uniquely high hemispheric reflection of OM®100 enables this to be the ideal heat blocking material. In such applications as adiabatic plates OM®100 will improve your total cost of ownership. By reducing heat loss you can benefit from improved process control, reduced energy needs and improved lifetime of your heating components. The heat blocking properties of OM®100 out-perform any comparable material available on the market today.

Near net shape manufacturing

Near net shape manufacturing

The patented manufacturing method of OM®100 allows it to be manufactured close to the dimensions of the finished component. This reduces excess material and lowers machining steps. This improved efficiency in manufacturing contributes to a lower cost for the finished part.

Superior surface finish

Superior surface finish

White opaque quartz is often used as flanges or chamber seals to thermally protect the O-ring material. To ensure an optimal seal at the O-ring, the smoothest surface possible is critical. The unique physical properties of OM®100 allow for a greatly improved surface finish after manufacturing and multiple refurbishment cycles, giving you the best seal possible every time and an extended lifetime of use for when compared to parts made from other opaque quartz materials.

Clear fused quartz compatibility

Clear fused quartz compatibility

One of the key features of our OM®100 material is it comparable processing properties to clear fused quartz (e.g. HSQ®300) for both hot and cold processes. OM®100 is 100% compatible to the hot working and cold machining of clear fused quartz and as required can be welded, fire polished or thermally reformed. In addition if using OM®100 for demanding applications it can be CNC ground and optically polished to the highest precision.

Ultra high purity

Ultra high purity

OM®100 offers you a total level of impurities of <50ppm and is both suitable and qualified for even the most challenging semiconductor processes of today. A synthetic version of Heraeus OM® is now developed to support the next generation of semiconductor processes where impurities are one of the biggest challenges. Utilizing a synthetic opaque material from Heraeus will offer you a total level of impurities of <1ppm to support your advanced processes, with all the other advantages of OM®100.

The patented manufacturing method of OM®100 allows it to be manufactured close to the dimensions of the finished component. This reduces excess material and lowers machining steps. This improved efficiency in manufacturing contributes to a lower cost for the finished part.

The listed dimensions are max. dimensions, for given geometries. Smaller or special shaped geometries are possible and available on request.

Round

Round

Our full body ingot material in round shape is available with outer diameter (OD) up to 720mm and block height up to 60mm.

Rectangular

Rectangular

Heraeus can provide OM® either as square blocks (up to 590mm x 590mm) or rectangular blocks (up to 900mm x 300mm). Block height can be up to 60mm.

Flange

Ring

OM® rings are very flexible in shape and can be adjusted to customer requirements. The outer diameter can be up to 800mm. Furthermore they can be manufactured higher than block material, allowing up to 250mm height (depending on inner diameter).

General properties

Unit OM® 100
Density g/cm3 2.15 - 2.18
Porosity % <2.3
Pore size µm <20

Electrical properties

Unit OM® 100
Resistivity (20°C) Ω∙m >1018
Resistivity (1200°C) Ω∙m >1.3 x 105
Type Insulator
Dielectric constant (εr) @ 13,56 MHz 3.70

Mechanical properties

Unit OM® 100
Tensile strength MPa 50
Flexural strength MPa 84
Compressive strength MPa >1000
Young modulus GPa 54

Thermal properties

Unit OM® 100
Thermal expansion K-1 0.47 x 10-6
Thermal conductivity (20°C) W∙m-1∙K-1 1.24
Specific heat J∙g-1∙K-1 0.70
Max. working temperature °C 1100°C (long)
1300°C (short)
Reflectivity % ~80
to top