Inspection Flattening 00 Grade Granite Surface Plate
High Precision Granite Surface Plate With Black Color
Precision Granite surface plates are manufactured to meet or exceed the tolerances specified by Federal Specification GGG-P-463c. A Precision Granite calibration certificate is included with every surface plate, guaranteeing overall surface flatness and repetitive gage measurements and is traceable to N.I.S.T. or equivalent National or International Organizations. Long-form certification is also available.
Specification:
1. Specific Gravity(Proportion):3.30g/cm3 or 2970-3070kg/m2
2. Shore Hardness:>70Hs-80Hs
3. Tensile strength:211Kg/cm2
4. Compressive strength:254-254Mpa
5. Linear expansion Coefficient:4.61'10-6/ºC
6. Elastic Modulus:30-50Gpa
7. Water Absorptivity:≤0.13%
8. Flexible grinding capacity:1.27-1.47N/mm2
Our granite surface plate refers to the advanced standards of the leading countries, and its flatness tolerance is in accordance with the JB/T 7975-1999 Surface Plate:
Grade 000 =1x(1+d/1000)/μm
Grade 00 =2x(1+d/1000)/μm
Grade 0 =4x(1+d/1000)/μm
Grade 1 =8x(1+d/1000)/μm
(d is the length of the diagonal)
|
Specification |
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 |
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