YS/T 95.2-2016 English PDF (YST95.2-2016)

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YS/T 95.2-2016: Aluminum foil for air conditioner - Part 2: Precoated aluminum foil
YS/T 95.2-2016
YS
NON-FERROUS METAL INDUSTRY
STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.10
H 61
Replacing YS/T 95.2-2009
Aluminum foil for air conditioner -
Part 2. Precoated aluminum foil
ISSUED ON. APRIL 05, 2016
IMPLEMENTED ON. SEPTEMBER 01, 2016
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Requirements ... 6 
4 Test methods ... 11 
5 Inspection rules ... 14 
6 Marks, packaging, transport, storage ... 18 
7 Order form (or contract) ... 20 
Foreword
YS/T 95 “Aluminum foil for air conditioner radiator” consists of two parts.
- Part 1. Finstock;
- Part 2. Precoated aluminum foil.
This Part is Part 2 of YS/T 95.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces YS/T 95.2-2009 “Aluminum foil for air conditioner - Part 2.
Precoated aluminum foil”. Compared with YS/T 95.2-2009, the main technical
changes in this Part are as follows.
- deleted product models of P14, P23, P24, P43, P44, P51, P52, P61, P62;
- added product models of P31, P32;
- tightened harmful element limit value;
- added requirements for coating resistances to bending and acid;
- added provisions for measuring the hydrophilic angle after immersion in oil
resistance test method;
- modified requirements for coating appearance quality;
- the supplier and the purchaser are required to agree on the type of the no-
clean volatile oil for the hydrophilic angle of the test process;
- specified that harmful elements or harmful substances are tested according
to GB/T 26125, and antibacterial properties are tested according to GB/T
21866;
- modified test method for alkali resistance;
- modified test method for coating odor;
- added requirements for contact surface diameter of solvent resistant
hammer.
This Part was proposed by and shall be under the jurisdiction of National
Technical Committee on Non-ferrous Metal of Standardization Administration of
China (SAC/TC 243).
The drafting organizations of this Part. Yitong Technology Group Co., Ltd.,
Guangzhou Huigu Chemical Co., Ltd., Zhenjiang Dingsheng Aluminum Industry
Co., Ltd., Ruyuan Yao Autonomous County Yangzhiguang Hydrophilic Foil Co.,
Ltd., Jiangsu Chang Aluminum Co., Ltd., Xiamen Xiashun Aluminum Foil Co.,
Ltd.
Main drafters of this Part. Zhou Linjie, Zhou Yingchun, Dong Qibao, Li Yuefeng,
Shi Yuzhen, Zhang Jianming, Lao Xiaofeng, Wang Xiguang.
Versions of standard substituted by this Standard are.
- YS/T 95.2-2001, YS/T 95.2-2009.
Aluminum foil for air conditioner -
Part 2. Precoated aluminum foil
1 Scope
This Part of YS/T 95 specifies the requirements, test methods, inspection rules
and marks, packaging, transport, storage, quality certificate and order form (or
contract) content of precoated aluminum foil for air conditioner heat sink.
This Part is applicable to aluminum foil for air conditioner heat sink of which the
surface is covered with a corrosion-resistant layer and a hydrophilic coating
(hereinafter referred to as precoated foil).
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 1740, Methods of test for resistance to heat and humidity of paint films
GB/T 1771, Paints and varnishes - Determination of resistance to neutral salt
spray (fog)
GB/T 3199, Wrought aluminum and aluminum alloy products - Packing,
marking, transporting and storing
GB/T 6461, Methods for corrosion testing of metallic and other inorganic
coatings on metallic substrates - Rating of test specimens and manufactured
articles subjected to corrosion tests
GB/T 6682, Water for analytical laboratory use - Specification and test
methods
GB/T 9286, Paints and varnishes - Cross cut test for films
GB/T 9753, Paints and varnishes - Cupping test
GB/T 21866, Test method and effect for antibacterial capability of paints film
GB/T 22638.9, Test methods for aluminum and aluminum alloy foils Part 9.
Determination of hydrophilic property
GB/T 22638.10, Test methods for aluminum and aluminum alloy foils - Part
10. Determination of mass per unit area (surface density) of coatings
GB/T 26125, Electrical and electronic products - Determination of six
regulated substances (lead, mercury, cadmium, hexavalent chromium,
polybrominated biphenyls, polybrominated diphenyl ethers)
YS/T 95.1, Aluminum foil for air conditioner radiator - Part 1. Finstock
3 Requirements
3.1 Product classification
3.1.1 Coating structure
See Figure 1 for coating structure.
Figure 1 -- Coating structure
3.1.2 Product model as well as composition and instructions
The precoated foil is divided into 9 product models according to the coating
structure, as shown in Table 1. The model number is expressed in English
capital letter "P" plus two Arabic numerals.
Substrate
Hydrophilic coating (top coat)
Hydrophilic coating (top coat)
Corrosion resistant layer
(primer)
Corrosion resistant layer
(primer)
Table 1 -- Product model and composition
Product
model
Composition of product model
P Primer layer (first digit after P) Topcoat layer (second digit after P)
P11
Precoated foil
mark
1. Organic anti-corrosion
coating
1. Organic hydrophilic
coating
P12 2. Inorganic hydrophilic coating
P13 3. Without coating
P21 2. Inorganic passivation
coating
1. Organic hydrophilic
coating
P22 2. Inorganic hydrophilic coating
P31
3. Organic high anti-corrosion
coating
1. Organic hydrophilic
coating
P32 2. Inorganic hydrophilic coating
P33 3. Without coating
P41
4. Inorganic passivation
coating + organic high anti-
corrosion coating
1. Without coating
3.1.3 Function code
The precoated foil is divided into antibacterial, lubricated and common types
according to its functional characteristics. Antibacterial function code is "KJ".
Lubricated function code is "RH".
3.1.4 Marking
The marking of the precoated foil is expressed in the order of product name,
standard number, product model, function code, designation, state, and size
specifications. Marking examples are as follows.
Example 1. the common type precoated foil of which the designation is 8011,
the state is H22, the thickness is 0.115mm, the width is 811.0mm, the primer
layer is an organic anti-corrosion coating, and the topcoat layer is an organic
hydrophilic coating, is marked as.
Precoated foil YS/T95.2-P11-8011H22-0.115×811
Example 2. the antibacterial type precoated foil of which the designation is 1200,
the state is H24, the thickness is 0.105mm, the width is 792.0mm, the primer
layer is an organic anti-corrosion coating, and the topcoat layer is an inorganic
hydrophilic coating, is marked as.
Precoated foil YS/T95.2-P22KJ-1200H24-0.105×792
Example 3. the common type precoated foil of which the designation is 3102,
the state is H26, the thickness is 0.100mm, the width is 810.0mm, the primer
layer is organic high anti-corrosion coating, there is no topcoat layer, is marked
as.
Precoated foil YS/T95.2-P33-3102H26-0.100×810
3.2 Chemical composition
The chemical composit...