Customization: | Available |
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Application: | Machinery Accessory |
Standard: | GB |
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Dimension | Marble Mechanical Components | Granite Components |
Rock Type | Metamorphic rock, formed by metamorphism of limestone, dolomite, etc., under high temperature and pressure. Main mineral components are calcite and dolomite. | Igneous rock, formed by cooling and solidification of magma intruding into the earth's crust. Main mineral components are quartz, feldspar, and mica. |
Structural Characteristics | Coarse particles, relatively loose structure, may have natural textures, cracks, or pores, with poor material uniformity. | Fine particles, compact structure, small and uniform crystal particles, hard texture, few impurities, and high material stability. |
Natural Patterns | Diverse and colorful patterns (such as white, gray, red, etc.), often with obvious layered or banded patterns. | Relatively simple patterns, mostly speckled or uniform tones (such as black, gray, white, etc.), with a more concise appearance. |
Performance Indicator | Marble Components | Granite Components |
Hardness | Mohs hardness of about 3-5, low hardness, easy to be scratched or worn, and poor wear resistance. | Mohs hardness of about 6-7, high hardness, strong wear resistance, and significantly better scratch resistance than marble. |
Density | Density of about 2.6-2.8 g/cm³, lighter material, but loose structure leads to low compressive strength (about 70-120 MPa). | Density of about 2.6-2.8 g/cm³, similar to marble, but with higher compressive strength (about 100-250 MPa) and stronger flexural strength. |
Thermal Stability | Thermal expansion coefficient of about , large deformation affected by temperature, unsuitable for high-precision temperature-controlled scenarios. | Extremely low thermal expansion coefficient , almost unaffected by temperature changes, suitable for precision measurement or constant temperature environments. |
Corrosion Resistance | Main component calcium carbonate easily reacts with acids, poor acid and corrosion resistance, and easy to be eroded when contacting acidic substances. | Stable chemical properties, resistant to acid, alkali, and other chemical substances, suitable for use in complex environments. |
Hygroscopicity | Loose structure, strong hygroscopicity, long-term moisture exposure may cause dimensional deformation or surface weathering. | Tight structure, extremely low hygroscopicity, not easy to deform due to moisture, suitable for humid or high-humidity environments. |
Application Field | Marble Components | Granite Components |
Measuring Instruments | Commonly used for general-precision plates and worktables (such as laboratory measurement platforms), but not suitable for high-precision metrology equipment. | Widely used in high-precision measuring instruments (CMM, optical platforms), lithography machine bases, and other scenarios requiring long-term stable precision. |
Mechanical Manufacturing | Can be used as worktables and guide rails for ordinary machine tools, but with limited load-bearing capacity and wear resistance, suitable for light-load equipment. | Used for precision machine tool guide rails, bearing blocks, sliders, etc., capable of withstanding heavy loads and high cutting forces, and with low friction coefficient (not prone to "crawling" phenomenon). |
Environmental Adaptability | Unsuitable for humid, acid-base, or large temperature fluctuation scenarios (such as outdoor equipment, chemical workshops). | Can work stably in high/low temperature, humid, and corrosive environments, such as semiconductor manufacturing workshops and aerospace precision components. |
Special Scenarios | Due to beautiful patterns, occasionally used for decorative mechanical components with low precision requirements (such as art installation bases). | Focused on functional applications, such as astronomical telescope supports, laser processing equipment bases, and other scenarios with extremely high stability requirements. |