The main mineral components of the marble platform (marble slab) stone are pyroxene, plagioclase, a small amount of olivine, biotite, and trace amounts of magnetite. The marble platform body has a black luster, a precise structure, and after billions of years of aging, the texture is uniform, stable, strong, and hard, which can maintain high accuracy under heavy loads; Suitable for industrial production and laboratory measurement work.

　　Physical properties of marble platform (marble slab):

　　The flatness tolerance of marble platform (marble slab) shall comply with GB4987-85 standard:

　　Level 000=1x (1+d/1000) um Level 00=2x (1+d/1000) um

　　Level 0=4 x (1+d/1000) um Level 1=8 x (1+d/1000) um (d is diagonal mm) (measurement temperature is generally 20 ± 2 ℃)

　　Specific gravity of marble platform (marble slab): 2970-3070kg/m2

　　Compressive strength: 245-254N/m

　　Linear expansion coefficient: 4.61 × 10-6/℃

　　Water absorption rate: < 0.13%

　　Shaw hardness: Hs70 or above

　　Characteristics and advantages of marble platform (marble slab):

　　1. Rock undergoes long-term natural aging, with a uniform organizational structure, extremely low coefficient of linear expansion, complete disappearance of internal stress, and no deformation, resulting in high accuracy.

　　2. Good rigidity, high hardness, and strong wear resistance.

　　3. Marble platform (marble flat) is not afraid of acid and alkali erosion, does not rust, does not need to be coated with oil, is not easy to stick to dust, maintenance is convenient and simple, and has a long service life.

　　4. There will be no scratches, not hindered by constant temperature conditions, and the temperature measurement accuracy can be maintained at room temperature.

　　5. Non magnetized, able to move smoothly during measurement, without any sluggishness, unaffected by moisture, and well balanced on a flat surface.

　　Marble platform (marble slab) specifications: According to your actual needs, we can customize various sizes and thicknesses of marble slabs (up to 3000 * 6000 * 500mm) for you. We can also add holes, countersunk holes, threaded or sturdy stainless steel components and T-grooves to your marble platform slab.