3.2mm,4mm high transmission Coating low iron tempered glass,mad in china

Product Details:

Place of Origin:	China
Brand Name:	Hehe
Certification:	SPF,3C,TUV,ISO9001
Model Number:	3.2mm,4.0mm
Solar energy materials:	pv products

Payment & Shipping Terms:

Minimum Order Quantity:	1000 Sqm
Price:	$4.85/sqm
Packaging Details:	Pallet,Crat.
Delivery Time:	within 10 days after confirmed
Payment Terms:	T/T,L/C at sight.
Supply Ability:	500,000SQM.

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Detailed Product Description

1 Specification

Thickness: 3.2mm/4mm

Max size: 2300mm*1500mm　

Edge: Straight Edge　

Corner: Cut

Type: single coating, Double coating

Surface patterns: one side Patterned

2 Performance Data Sheet　

Inspection Item	Test Method	StandardValue	Unit	Detection Data
Light Transmittance	(D65)　(within the spectral range of wave length between 380nm-1100nm)	＞93.5	%	94.11
Pencil Hardness	GB/T 6739	≥4	H	5
Brushing Resistance Test	After 400times of brushing tests, measure the attenuation value of light transmittance	≤1.0	%	0.4
Water Resistance	After 96 hours water resistance test, measure the attenuation value of light transmittance	≤0.5	%	0.1
Acid Resistance Test	Steep the sample in the hydrochloric acid of 1mol/L under the temperature of 23℃±0.2 ℃ for 24 hours, measure the attenuation value of light transmittance.	≤1.0	%	0.3
Salt Spray Test	NaCl solution of 5% ±1%,spray under 35℃ for 96 hours, measure the attenuation value of light transmittance	≤1.0	%	0.15
Temperature Resistance Test	Repeat 200 times (about 1000hours) under the temperature from -40℃ to 85℃±0.2 ℃, measure the attenuation value of light transmittance	≤1.0	%	0.63
Humid Heat Test	Temperature 85±0.2℃,relative humidity 85% ±5%, test time 1000 hours, measure the attenuation value of light transmittance	≤1.0	%	0.52
Wet AND Freeze Test	Relative humidity 85% ±5%,reduce the temperature from 85℃±0.2 ℃ to -40 ℃ for 10 times, measure the attenuation value of light transmittance	≤1.2	%	1.05
Sand and Dust Test	Under 23 ℃, maintain the humidity lower than 30%,adjust wind speed at 8.9 ±1.2m/s, blowing dust concentration 10.6± 7g/m3 for 6 hours; adjust wind speed at 1.5± 1m/s,raise temperature to 60℃ for 16 hours; adjust wind speed at 8.9± 1.2m/s, blowing dust concentration 10.6 ± 7g/m3 for 6 hours, then measure the attenuation value of light transmittance	≤1.0	%	0.88

3 Thermal Properties

Heat transfer Coefficient	5.8 W/m2K
Expansion Coefficient between 20-300℃	per℃=9.03×10-6 m/K
Specific heat capacity	0.2 J/Kg·K
Calculated Thermal Conductivity at 20℃ In	1.0 W/mK
Softening Point	~720℃
Annealing Point	~550℃
Stain Point	~500℃

4 Mechanical Properties　

Moh’s Scale(Scratch hardness)	4~5
Knoop Hardness Number (indentation Hardness) indenter load-500 grams	470
Poisson’s Ratio	0.2
Density	2.5 g/cc
(Yong’s) Modulus of Elasticity	73.000N/mm2
Tensile Strength	43 N/mm2
Pressure resistance	700-900N/mm2
Mechanical Strength	90N/Mn2

5 Quality Standard List

5.1 Tolerance Range

Iterm	Index
Thickness tolerance	±0.2mm(3.2mm)
Dimension tolerance	±1.0mm
Diagonal difference	≤2mm (diagonal size< 1000mm), ≤4mm (diagonal size>1000mm)
Iron content	＜115pm
Overall Bow/warp	＜0.2%
Local warp	＜0.3mm within 300mm

5.2 Reasonable Defects Data

Iterm		Index
Unclear Pattern	Visible	Not Allowed
Bubble	Micro bubbles	≤3.0/㎡
	Length(L) ㎜	2≤L＜5		5≤L＜10	L≥10
	Number Allowed	6*S		3*S	0
Inclusion	Length(L)㎜	2≤L<3		L≥3
	Number Allowed	4*S	0
Line	Visible	Not Allowed
	Number Allowed
Dents	Visible	Not Allowed
	Number Allowed
Wrinkle	Visible	Not Allowed
Scratch	Visible	4pcs(L<5mm,W≤1mm), 2pcs(L<5-10mm,W≤1mm), 1pc (L<10-25mm, W≤1mm)
	Number Allowed
Crack		Should Not Visible
Edge	Broken Edge, Corner	≤1pc
	Nick, Flange	L≤10mm; W≤2mm,thickness≤1mm.
Note: 1,L means length and W means width. S means the area of glass in Meter. Number Allowed is the product of S and its coefficient. 2,Less than 8 bubbles (smaller than 2mm) within one circle with a diameter of 100mm. 3,Devastating inclusion not allowed.