Ningbo Rocking Group Co.,Ltd.
Ningbo Rocking Import & Export Co.,Ltd.
Professional manufacturer of Aluminum Composite Panel, Coated Aluminum coil, Solid Aluminum Sheet...

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Ningbo Rocking Group Co.,Ltd.
Ningbo Rocking Import & Export Co.,Ltd.


Group Add: No.
168 Canghai Road, Hi-tech Industry Zone, Ningbo, Zhejiang Province, China.

Head office Add: Office 401, west building of technical trade center, No.100 xiangyun road,hi-tech district,ningbo, china

 

Tel: 86-0574-87162491
Fax: 86-0574-87162492
Web: www.rockinggroup.com
E-mail: sales@rockinggroup.com

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Home >> Technology >> Technical Character

Technical Character


No Properties Standard Index Result
1 Appearance quality vestige GB/T 17748-1999 indistinct indistinct
coating omit GB/T 17748-1999 not allowed no
ripples GB/T 17748-1999 indistinct no
rubbles GB/T 17748-1999 not allowed no
Flaw GB/T 17748-1999   no
abrasion GB/T 17748-1999 not allowed no
scratch GB/T 17748-1999 not allowed no
total number of abrasion and scratch GB/T 17748-1999 < =4 0
aberration GB/T 17748-1999 indistinct indistinct
2 dimension deviation length GB/T 17748-1999 ± 3 mm 1.00 mm
width GB/T 17748-1999 ± 2 mm 0 20 mm
thickness GB/T 17748-1999 ± 0.2 mm 0.15 mm
squareness GB/T 17748-1999 < = 5 mm 1.00 mm
edge unstraightness GB/T 17748-1999 < = 1 m m/m 0.07 mm /m
wrapage GB/T 17748-1999 < = 5 m m/m 0.05 mm /m
3 coating thickness GB/T 17748-1999 min =25 μm average 30 μm
4 gloss tolerance GB/T 17748-1999 < =10 (gloss < 70) 5.1 gloss 45
< =5 (gloss > 70)
5 pencil hardness ASTM D3363 > = HB 4 H
6 coating flexibility ASTM D2256 < = 2T 1 T
7 coating adhesive ASTM D3359 not lower than class 1 OK
8 impact resistance ASTM D732 1500 kg 1650 kg
9 grinding resistance ASTM D968-93 > = 5.0 L /μm 7.2 L /μm
10 boiling water resistance ASTM D3359 no change no change
11 pollution resistance GB/T 17748-1999 < =15 % 6%
12 acid resistance ASTM D1308-87 no change no change
13 alkaline resistance ASTM D1308-87 no change no change
14 oil resistance ASTM D1308-87 no change no change
15 solvent resistance ASTM D1308-87 no change no change
16 scrub resistance GB/T 17748-1999 no change 10000 times no change 10000 times
17 face density ASTM D792 5.5 kg /m2
18 bending strength GB/T 17748-1999 > = 100 MPa 128 MPa
19 Flexural Modulus ASTM D790-02 > = 2.0 X 10 4 MPa 2.55 X 10 4 MPa
20 penetrating resistance GB/T 17748-1999 > = 9.0 KN 10.1 KN
21 shearing strength ASTM D732 > = 28.0 MPa 32.6 MPa
22 180 o peel strength ASTM D903-98 > = 7.0 N/mm 10.7 N/mm
23 temperature difference resistance GB/T 17748-1999 no change no change
24 thermal expansion coefficient ASTM D696 < =4.00 x 10 -5o C -1 2.10 x 10 -5o C -1
25 thermal deformation temperature ASTM D648 > =105 o C 115 o C
26 salt - spray resistance ASTM D117-94   Passes 3000 hrs
27 artificial weathering colour differences GB/T 17748-1999 < = 3.0 1.9
degradation of metallic paint films GB/T 17748-1999 < = grade 2 grade 1
others GB/T 17748-1999 grade 0 grade 0