Technical Details of Sheets
Up-drawn sheet dimensions
The following specifications are applicable to B 270® glass sheets.
1. Formats
Thickness in mm | Length x Width in mm x mm | Length tolerance in mm | Width tolerance in mm |
---|---|---|---|
0.9 – 10.0 | 1680 x 900 | ± 20 | ± 20 |
0.9 – 10.0 | 900 x 840 | ± 10 | ± 10 |
2. Geometrical Properties
Thickness in mm | Thickness tolerance(1) in mm | Local thickness Variation(2) in mm/cm | Warp(3) in mm |
---|---|---|---|
0.90 – 1.00 | ± 0.10 | 0.015 | ≤ 0.48 |
1.10 – 3.00 |
± 0.15 |
0.02 | ≤ 0.48 |
3.50 – 5.00 | ± 0.20 | 0.022 | ≤ 0.48 |
5.50 – 8.00 | ± 0.30 | 0.025 | ≤ 0.48 |
10 | ± 0.40 | 0.035 |
(1) Other tolerances on request
(2) Local Thickness Variation according to SEMI MF 1530 GBIR
(3) The maximum deviations of the glass surface from an ideal plane, referred to an area of 320 mm x width.
3. Glass quality properties
Properties - General | Conditions | Specifications |
---|---|---|
Roughness | Ra | ≤ 1 nm |
Cracks | visible | none |
3.1 Spot type and linear defects (e.g. inclusions, bubbles, knots, particles, digs, scratches)
Condition: L: length | W: width | S: Sum of length of all defects | T: Total amount of all defects
Formats | Specifications |
---|---|
1680 x 900 mm |
L, W ≤ 0.8 mm: allowed |
900 x 840 mm | L, W ≤ 0.8 mm: allowed Either S ≤ 80 mm Or T ≤ 10 pcs.: allowed" |
3.2 Edge defects (e.g. chips, protrusions)
Condition: Size
Specifications |
---|
≤ glass thickness: allowed |
> glass thickness: none |
3.3 Residual cooling tension
Condition: Stress birefringence
Specifications |
---|
0.90 mm – 1.35 mm: ≤ 20 nm/cm |
1.65 mm – 3.00 mm: ≤ 30 nm/cm |
3.50 mm – 6.00 mm: ≤ 40 nm/cm |
6.50 mm – 10.0 mm: ≤ 60 nm/cm |
3.4 Contaminations
Condition | Specifications |
---|---|
Inspection condition: over head light source, dark environment, duration 15s / pc., uncleaned |
Contaminations (e.g. glove marks, conveyor belt marks, paper marks, haze, cullet's, dust etc.) which are cleanable by a standard cleaning process at customer side will be ignored and are permissible without any size restriction. |
3.5 Quality assurance
Condition | Specifications |
---|---|
AQL according to ISO 2859 | SPC for geometrical properties |
Down-drawn sheet dimensions
The following specifications are relevant for D 263® T eco, D 263® LA eco, and AS 87 eco.
1. Formats
1.1 Formats of down-drawn stock sheets
Formats |
Dimensions | D 263® T eco in mm |
D 263® LA eco in mm |
AF 32® eco in mm |
AS 87 eco in mm |
---|---|---|---|---|---|
Thickness > 0.1 mm | 510 x 430 |
415 x 360 |
- | 500 x 400 | |
Thickness ≤ 0.1 mm (Ultra Thin Glass) |
440 x 360 | - | 510 x 430 | 500 x 400 | |
Thickness range | min. | 0.03 | 0.30 | 0.03 | 0.07 |
Thickness range | max. | 1.10 | 0.70 | 0.10 | 0.33 |
1.2 Formats of down-drawn stock sheet D 263® M
Designation/ Type |
Length in mm |
Tolerance Length in mm |
Gross width1 in mm |
Tolerance Gross width in mm |
Quality (Net) width2 in mm |
Tolerance Quality width in mm |
---|---|---|---|---|---|---|
No. 0 | 435 | ± 10 | 410 | ± 20 | 360 | +0/-15 |
No. 1 | 435 or 710 | ± 10 | 410 | ± 20 | 380 | +0/-15 |
No. 1½ | 435 or 710 | ± 10 | 410 | ± 20 | 380 | +0/-15 |
No. 2 | 435 or 710 | ± 10 | 410 | ± 20 | 380 | +0/-15 |
(1) Gross width includes the bead
(2) Net width delimits the maximum useable sheet width
Other formats on request
1.3 Formats of down-drawn stock sheet D 263® M 1½ H
Designation/ Type1 |
Length in mm |
Tolerance Length in mm |
Total width in mm |
Tolerance Total width in mm |
Quality (Net) width2 in mm |
Tolerance Quality width in mm |
---|---|---|---|---|---|---|
No. 1½ H | 435 | ± 5 | 420 | ± 5 | 380 | +10/-0 |
(1) According to ISO 8255-1
(2) Net width delimits the maximum useable sheet width
2. Geometrical properties
2.1 Geometrical properties of down-drawn stock sheets
Thickness(1) in mm |
Thickness Tolerance(2)in µm |
Total Thickness Variation (2) in µm |
Flatness(3) in µm |
---|---|---|---|
D 263® T eco | |||
0.03 | ± 10 | ≤ 15 | ≤ 3000 |
0.05 | ± 10 | ≤ 15 | ≤ 3000 |
0.07 | ± 10 | ≤ 15 | ≤ 3000 |
0.10 | ± 10 | ≤ 10 | ≤ 1500 |
0.145 | ± 10 | ≤ 10 | ≤ 1500 |
0.175 | ± 10 | ≤ 10 | ≤ 1500 |
0.21 | ± 15 | ≤ 15 | ≤ 200 |
0.25 | ± 15 | ≤ 15 | ≤ 150 |
0.30 | ± 15 | ≤ 15 | ≤ 150 |
0.40 | ± 15 | ≤ 15 | ≤ 150 |
0.50 | ± 15 | ≤ 15 | ≤ 150 |
0.55 | ± 15 | ≤ 15 | ≤ 150 |
0.70 | ± 20 | ≤ 20 | ≤ 250 |
0.90 | ± 25 | ≤ 25 | ≤ 250 |
1.00 | ± 30 | ≤ 25 | ≤ 250 |
1.10 | ± 30 | ≤ 25 | ≤ 250 |
D 263® LA eco | |||
0.30 | ± 20 | ≤ 20 | ≤ 600 |
0.50 | ± 50 | ≤ 25 | ≤ 600 |
0.70 | ± 50 | ≤ 40 | ≤ 700 |
AF 32® eco | |||
0.03 | ± 15 | ≤ 15 | ≤ 3000 |
0.05 | ± 15 | ≤ 15 | ≤ 3000 |
0.07 | ± 15 | ≤ 15 | ≤ 3000 |
0.10 | ± 15 | ≤ 15 | ≤ 1500 |
AS 87 eco | |||
0.07 | ± 20 | ≤ 20 | ≤ 1000 |
0.10 | ± 20 | ≤ 20 | ≤ 800 |
0.145 | ± 20 | ≤ 20 | ≤ 800 |
0.175 | ± 20 | ≤ 20 | ≤ 800 |
0.21 | ± 20 | ≤ 20 | ≤ 500 |
0.25 | ± 20 | ≤ 20 | ≤ 500 |
0.33 | ± 20 | ≤ 20 | ≤ 500 |
(1) Other thicknesses on request
(2) According to SEMI MF 1530 GBIR
(3) According to SEMI M1 GBINFER
2.2 Geometrical properties1 of D 263® M and D 263® M 1½
Designation/ Type |
Nominal thickness in mm |
Thickness tolerance in mm |
TTV2 (Total Thickness | Flatness with beads in mm |
Flatness without beads3 in mm |
---|---|---|---|---|---|
No. 0 |
0.100 | ± 0.015 | ≤ 30 | 10 | 2.5 |
No. 1 | 0.145 | ± 0.015 | ≤ 30 | 8 | 2.5 |
No. 1½ | 0.175 | ± 0.015 | ≤ 30 | 8 | 2.5 |
No. 1½ H | 0.170 | ± 0.005 | ≤ 10 | - | 0.5 |
No. 2 | 0.210 | ± 0.020 | ≤ 40 | 8 | 2.5 |
(1) Geometrical properties are only valid on quality width
(2) According to SEMI MF 1530 GBIR
(3) According to SEMI M1 GBINFER
3. Quality properties
3.1 Quality properties of down-drawn stock sheets
Properties - General | Conditions | Specifications |
---|---|---|
Roughness | Ra | ≤ 1 nm |
Cracks | visible | none |
Spot type defects (e.g. inclusions, bubbles, knots, particles, digs)
Conditions: inline inspection
Specifications |
---|
< 100 µm: ignore |
100 µm – 200 µm: ≤ 4 pcs. |
> 200 µm: none |
Linear defects (e.g. scratches) | L: length W: width
Specifications |
---|
L < 25 mm and W < 20 µm: ignore |
L < 25 mm and W 20 µm – 50 µm: ≤ 3 pcs. |
L > 25 mm or W >50 µm: none |
Edge defects (e.g. chips, protrusions)
Specifications |
---|
< 0.2 mm: ignore |
< 1.0 mm: ≤ 3 pcs. |
> 1.0 mm: none |
Contaminations
Condition | Specifications |
---|---|
Inspection condition: light source, ≤ 5 klux, dark environment, duration 15s / pc., cleaned |
Contaminations (e.g. glove marks, conveyor belt marks, paper marks, haze, cullet's, dust etc.) which are cleanable by a standard cleaning process at customer side will be ignored and are permissible without any size restriction. |
Quality assurance
Condition | Specifications |
---|---|
AQL according to ISO 2859 |
|
3.2 Quality properties of D 263® M and D 263® M 1½ H
Properties - General | Conditions | Specifications |
---|---|---|
Roughness | Ra | ≤ 1 nm |
Cracks | visible | none |
Stripes
Condition | Specifications |
---|---|
150 W xenon light, distance of light source to the projection board 1000 mm to 1200 mm |
Stripe level ≤ limit sample at a distance of ≥ 450 mm parallel to projection board |
Defects (e.g. inclusions, bubbles, knots, particles, digs)
Condition | Specifications |
---|---|
based on average size (length + width)/2 |
≤ 4 pcs. per 1000 cm² maximum defect area: Ø ≤ 5 mm |
Contaminations
Condition | Specifications |
---|---|
Inspection condition: light source ≤ 5 klux, dark environment, duration 15 s / pc., cleaned |
Contaminations (e.g. glove marks, conveyor belt marks, paper marks, haze, cullets, dust etc.) |
Floated sheet dimensions
The following specifications are applicable to BOROFLOAT®.
Standard thicknesses
Thickness (mm) | Tolerance (mm) |
---|---|
0.70 | ± 0.05 |
1.10 | ± 0.05 |
1.75 | ± 0.05 |
2.00 | ± 0.05 |
2.25 | ± 0.05 |
2.75 | ± 0.10 |
3.30 | ± 0.20 |
3.80 | ± 0.20 |
5.00 | ± 0.20 |
5.50 | ± 0.20 |
6.50 | ± 0.20 |
7.50 | ± 0.30 |
9.00 | ± 0.30 |
11.00 | ± 0.30 |
13.00 | ± 0.30 |
15.00 | ± 0.40 |
16.00 | ± 0.50 |
18.00 | ± 0.50 |
19.00 | ± 0.50 |
20.00 | ± 0.70 |
21.00 | ± 0.70 |
25.40 | ± 1.00 |
Panel thickness is continuously measured during production using laser thickness measuring equipment.
Further thicknesses and tolerances are available on request.
Standard sizes of BOROFLOAT® 33
Size (mm) | Thickness (mm) |
---|---|
1,150 x 850 | 0.7 - 25.4 |
1,700 x 1,300 | 16.0 - 21.0 |
2,300 x 1,700 | 0.7 - 15.0 |
Available materials
SCHOTT Sheets are available in the following materials:
- D 263®
- BOROFLOAT®
- AS 87 eco
- B 270®
To find out more, please see the related products on the overview page.