Granite Surface plate Density:2970-3070kg/m3 Compressive strength:245-254N/mm2 Flexible grinding amount: 1.27-1..47N/mm2

Granite Surface plate major mineral composition for pyroxene, plagioclase, a few olivine, black mica and trace magnetite, black color, the precise structure, after one hundred million years of aging, quality of a material is even, good stability, strength, high hardness, can in heavy load keep high precision.

Adopting high quality “Kuntai” natrual mateirial of granite, granite surface plate is manufactured by mechanical processing and manual lapping. It dosen't only own the advantages of black gloss, precise construction,even character, nice stability, high strength and hardness, but also no rust,  acid&alkali-proof, no magnetization, type stable, nice abrasion resistance and can keep stable at normal tempreture and heavy.

The main mineral ingredients of granite are pyroxene, anorthose, less olivine, black mica and less magnetite. Aging through hundreds of millions years, the granite can still retain even character, stable, high strength and hardness, and can keep high precision at heave duty. It is suitable for industrial production and measuring works at laboratory.

Proportion,2970-3070kg/m3

Compression strength,245-254kg/mm2

Flexible grinding capacity,1.27-1.47N/mm2

Coefficient of linear expansion,4.6×1-6°C

Water absorption 0.13%

Shore hardness HS, more than 70.

Precision has 000. 00, 0, 1 grade. It is the ideal tool for drawing line and inspection at precision processing company.

  

SpecificationLength × Width × Thickness (mm)	Weight (kgs)	Precision Grade (μm)
		000	00	0	1
300 × 200 × 50	17	1.5	3	6	12
300 × 300 × 50	19	1.5	3	6	12
400 × 300 × 70	25	1.5	3	6	12
400 × 400 × 70	48	2	3.5	6.5	13
630 × 400 × 100	76	2	3.5	7	14
630 × 630 × 100	155	2	4	8	16
800 × 500 × 130	156	2	4	8	16
1000 × 630 × 130	284	2.5	4.5	9	18
1000 × 750 × 150	338	2.5	5	9	18
1000 × 1000 × 150	450	2.5	5	10	20
1600 × 1000 × 200	963	3	6	12	24
2000 × 1000 × 200	1200	3.5	6.5	13	26
1600 × 1600 × 300	2312	3.5	6.5	13	26
2000 × 1600 × 300	2890	3.5	7	14	28
2500 × 1600 × 300	3612	4	8	16	32
3000 × 2000 × 500	9030	4.5	9	18	36
4000 × 2000 × 500	12040	5.5	11	22	44
6000 × 2000 × 700	25284	7.5	15	30	60

Granite Surface plate