High Hardness Granite Surface Plate

Super precision,high quality competitive price,excellent service produced by your requirement Used in engineering industrial

High Hardness Granite Surface Plate

Material:

  Granite mainly composition is augite,Plagioclase,few olivine ,biotite and micro- magnetite,black bright color,structure of precision,through millions of years ageing,uniform texture,good stability,high strength ,high hardness and so on.It keep high precision in heavy load,being used in industry producing and lab measuring commonly.

Size:

1.The largest size for production is 3000mm width and 6000mm length 2.We also accept to make any relative process

Physical properties:

Specific gravity:	2970-3070Kg/ m3	Compressive strength:	245-254N/m m2
Water absorption	0.13%	Elastic grinding amount:	1.27-1.47 N/m m2
Coefficient of linear expansion	4.61×10-6 /°C	Shore hardness:	above Hs70

Bran granite surface plate accuracy

refer advanced leading countries

standard.flatness tolerance as follows:

grade 000 1X(1+d/1000)um

grade 00 2x(1+d/1000)um

grade 14x(1+d/1000)um

grade 1 8x(1+d/1000)um

(d is the length of the plate's diagonal)

Type Length ×width ×height	weight Kg	Grade000 µm	Grade00µm	Grade0µm	Grade1µm
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