Is Precision Granite the Best Material for Semiconductor Lithography Components?

Due to its non-magnetic nature, high rigidity, and near-zero thermal expansion, Precision Granite is the essential material for ensuring nanometer-level precision in lithography and metrology.

Non-Magnetic and Chemical Stability

In the high-intensity electromagnetic environments of semiconductor fabrication, Granite components prevent interference due to their non-magnetic properties. Furthermore, granite is chemically inert and does not outgas or produce particles, making it perfect for ISO Class 1 cleanroom environments.

Ultimate Physical Rigidity and Creep Resistance

The high-density black granite selected by ZHHIMG offers extreme hardness. Under long-term loads, it exhibits virtually no physical creep, providing a permanent stable foundation for X-Y stages and ensuring consistent repeatable positioning accuracy over years of operation.

Natural Advantage in Thermal Expansion

Semiconductor processes are extremely sensitive to heat. Granite’s low coefficient of thermal expansion offsets the heat generated by precision motors. Combined with our high-precision machining, it ensures that components maintain their geometric integrity across varying operational temperatures.

Material Performance Matrix

FAQ: Precision Granite

1. Why choose “Black” granite? It has higher density, lower water absorption, and better stability than grey granite.

2. What precision grades do you offer? We manufacture up to DIN 876 Grade 000 standards.

3. What is the maximum size? ZHHIMG can process single pieces up to 12 meters in length.

4. How do I maintain granite components? Use specialized pH-neutral cleaners and avoid contact with acidic substances.

5. Can you drill holes for inserts? Yes, we provide precision drilling and secondary bonding for Stainless Steel Inserts.

6. Is it suitable for vacuum use? Absolutely, natural granite does not outgas in vacuum conditions.