Items

Coating pencil hardness

Coating luster deviation

Coating flexility, T

Coating adhesion. Grade

Coating wear resistance, L/μm

Coating hydrochloric acid resistance

Coating oil resistance

Coating alkali tolerance

Coating nitric acid resistance

Coating solvent resistance

Coating contamination resistance, %

P e r f o r m a n c e

curtain wall plate

≥HB

≤10

≤2

0

≥5

Without change

Without change

Without bubble, convexity and pulverization, color difference△E≤2

Without bubble, convexity and pulverization, color difference△E≤5

Do not expose base

≤5

Common decoration board

--

luorocarbon coating: the same as curtain wall plate ; Other coatings: Without change

fluorocarbon coating: the same as curtain wall plate ; Other coatings: not required.

Test standard

GB/T6739 (IDT ISO 15184： 1998)

GB/T975 4(EQV ISO 2813： 1978 )

GB/T9286 (EQV ISO 2409：1992）

Apply test sand which meets Gb178

GB/T11942 (fluorocarbon coating poor coloring measure) Gb8076 (Other coatings chemical reagent)

GB/T11942 (poor coloring measure)

GB/T9780

Hydrochloric acid 　　　　　　　　　20# machine oil 　　　　　　　　　　Wipe for 200 times 　　　　　　　　　　　　concentration (volume integral): 　　　　　　　　　　　　　　　　　　　　with butyl ketone 　　　　　　　　　　　　fluorocarbon coating 5%, 　　　　　　　　　　　　　　　　　　　　　　　　200 　　　　　　　　　　　　Other coatings 2%

Salt fog resistance, Grade	Weathering resistance				Anti-impact	Hot water resistance	Peeling strength Nmm/mm		Weather resistance
	Color difference △E	Dulling, Grade	Other chemical properties, Grade	Appea- rance			Average	Minimum	Peeling strength average descen- ding rate, %	Coating adhesion, Grade	Appea- rance
4000h, without peeling, coating corrosion, grade >1	4000h, ≤4.0	4000,h≤2	4000h, 0	Without peeling	Without damage or eternal distortion	without abnormity	≥100	≥80	≤10	0	Without change
fluorocarbon coating the same as curtain wall plate ; Other coatings: 720h, without peeling, coating corrosion, grade >1	fluorocarbon coating: the same as curtain wall plate ; Other coatings: 600h, >2	luorocarbon coating: the same as curtain wall plate ; Other coatings: 600h, >2	fluorocarbon coating: the same as curtain wall plate ; Other coatings: 600h, 0		Without damage		≥50	≥30
GB/T1771(EQV ISO7253：1984）； GB/T1740 GB/T11942； GB/T9754(EQV ISO2813:1978); GB/T1766(NEQ ISO4628-1：1980)	GB/T16259 GB/T11942 GB/T9754(EQV ISO2813：1978） GB/T1766(NEQ ISO4628-1：1980）					GB/T9286 (EQV ISO 24 09：1992) GB/T1720	GB/T1457(MOD ASTM D 1781-98)		GB/T1457(MOD ASTM D1781-98）
Weight of impact object 　　　　98℃Distilled water, 　　　　　　Repeat for 50 times 　　　　　　　　　　　　　50kgFall: 700mm 　　　　　　 　constant temperature 2h　　　 under -40℃ and 80℃

Plane tensile adhesion strength, Mpa		Plane compre- ssion strength Mpa	Plane shearing elastic modulus Mpa			Bending rigidity N mm2	Shearing rigidity , N
Average	Minimum
≥1.0	≥0.6	≥1.0	≥30	≥0.6	≥4.0	≥1.0×108	≥2.0×104
≥0.6	≥0.4	≥0.8	≥25	≥0.4	≥3.0	≥1.0×107	≥1.0×104
GB/T1452(MOD ASTM C 297- 94(1999) )		GB/T1453(MOD ASTM C 365-00)		GB/T1455(MOD ASTM C 393-00)		GB/T1456(MOD ASTM C 273-00)

Allowed size deviation			for aluminum panel thickness and coating thickness
Items		Allowed deviation	Items		Thickness (Unit: aluminum panel, mm; coating, μm)
					Curtain wall plate	Common decoration plate
length, mm	≤2000	±3	aluminum panel		≥1.0 ,≥0.7	0.5--1.0
	＞2000	±5
width, mm		±2
thickness, mm		±0.25
diagonal difference, mm		≤5	Coating	First	——	≥16
edge straightness, mm		≤2		Second	≥25
warp, mm/m		≤2		Third	≥32
Note: Allowed size deviation is confirmed by the supplier and buyer