Aluminium Composite Panel(Outsidewall)

Items		Items	Items	Conclusion
Appearance		Clean surface without swell,flaws.scrath and aberration	pass	Qualified
		Length: ± 3mm	0mm~+2mm
		Width: ± 2mm	0mm~+1mm
		Thickness: 0. 2mm	0mm~+0.14mm
Deviation of dimension		Deviation of diagonal: ≤ 5mm	1mm	Qualified
		Out of straight at sides: ≤ 1mm/m	0.2mm/m
		Warp: ≤ 5mm/m	1mm/m
Thickness of coating		≥ 25um	29u （ av.30 ）	Qualified
Deviation of luster		≤ 10	2.1 （ av.28.0 ）	Qualified
Hardness of pencil		≥ HB	3H	Qualified
Toughness of coating		≤ 2T	2T
Adhesive		Not less than Grade1	Squaring off method of Grade 0 Grade 1marking method of rolling line	Qualified
Impact strength		50Kg.cm Without paint off and crack	Pass	Qualified
Boiling water resistance		(Boiling for 2h without change)	Unchanged	Qualified
Acid resistance		Immerse surface with5%HCI(v/v)for 48h without change	Unchanged	Qualified
Alkali resistance		Immerse surface with5%NaOH(m/m)for 48h without change	Unchanged	Qualified
Oil resistance		Immerse surface with 20# engine oil for 48h without change	Unchanged	Qualified
Solvent resistance		Clean 100 times with butanone without change	Bottom unrevealed	Qualified
Cleaning resistance		≥ 10000 times without change	Unchanged	Qualified
Abrasion resistance		≥ 5L/um	5.33L/um	Qualified
Contamination resistance		≤ 15%	7.8%	Qualified
Density of surface		Specified value: ± 0.5Kg/m2	5.32Kg/m2	Qualified
Bend strength		≥ 100Mpa	121Mpa	Qualified
Flexuous modulus of elasticity		≥ 2.0×10 4 Mpa	3.12 × 104 Mpa	Qualified
Through resistance		≥ 9.0kN	9.94kN	Qualified
Cutting strenght		≥ 28.0Mpa	32.0Mpa	Qualified
180 o peel strength		≥ 7.0N/mm	11.2N/mm	Qualified
Resistance to change of temperature		-40 o C~80 o C 20 cycles without change	Unchanged	Qualified
Heat deformation temperature		≥ 95oC	120oC	Qualified
Coefficient of heat expansion		≤ 4.00×10 -5oC -1	1.98 × 10 -5oC -1	Qualified
Salt haze resistance （ 3000h ）		Not less than Grade2	Grade 1	Qualified
（ 2000h ）	Artificial resistance aberration	≤ 3.0	1.24	Qualified
	Aging resistance Out of light	Not less than Grade2	Grade 1	Qualified
	other aging characteristic	Grade 0	Grade 0	Qualified

The test result meets the index requirements of quality product of GB/T17748-1999.

Items	Standard index of quality product	Result	Conclusion
Appearance	Clean surface without swell,flaws.scrath and aberration	pass	Qualified
	aberration		Qualified
	Length: ± 3mm	0mm~+1mm	Qualified
	Width: ± 2mm	0mm~+1mm	Qualified
	Thickness: ±0. 2mm	0mm~+0.14mm	Qualified
Deviation of dimension	Deviation of diagonal: ≤ 5mm	0mm	Qualified
	Out of straight at sides: ≤ 1mm/m	0.2mm/m	Qualified
	Warp: ≤ 5mm/m	1mm/m	Qualified
Thickness of coating	≥ 16um	17um （av.18 ）	Qualified
Deviation of luster	≤ 10	2.6 （ av.20 ）	Qualified
Hardness of pencil	≥ HB	2H	Qualified
Toughness of coating	≤ 3T	1T	Qualified
Adhesive	Not less than Grade1	Squaring off method of Grade 0 Grade 1marking method of rolling line	Qualified
Impact strength	50Kg.cm Without paint off and crack	Pass	Qualified
Boiling water resistance	(Boiling for 2h without change)	Unchanged	Qualified
Acid resistance	Immerse surface with2%HCI(v/v)for 24H without change	Unchanged	Qualified
Oil resistance	Immerse surface with 20# engine oil for 24h without change	Unchanged	Qualified
Solvent resistance	Clean 100 times with dimethylbenzene without change	Bottom unrevealed	Qualified
Cleaning resistance	≥ 10000 （ ≥ 10000 times without change）	Unchanged	Qualified
Abrasion resistance Density of surface	Specified value: ± 0.5Kg/m 2	3.63Kg/m 2	Qualified
Bend strength	≥ 60Mpa	79.6Mpa	Qualified
Flexuous modulus of elasticity	≥ 1.5×10 4 Mpa	2.19 × 10 4 Mpa	Qualified
Through resistance	≥ 5.0kN	6.25kN	Qualified
Cutting strenght	≥ 20.0Mpa	25.7Mpa	Qualified
180 o peel strength	≥ 5.0N/mm	6.2N/mm	Qualified
Resistance to change of temperature	-40 o C~80 o C 20 cycles without change	Unchanged	Qualified
Heat deformation temperature	≥ 95oC	116 o C	Qualified
Coefficient of heat expansion	≤ 4.00×10 -5 oC -1	2.47 × 10 -5 o C -1	Qualified

The test result meets the index requirements of quality product of GB/T17748-1999.