DRAFT UGANDA STANDARD DUS DEAS 468 
 
 
Second  Edition  
2018 -mm-dd
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pre-painted metal coated steel sheets  and coils — Spec ification 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Reference number 
DUS  DEAS 468: 2018 
 
 
 
© UNBS 2018DUS DEAS 468: 2018  
 
 
 
 
Comp liance with this standard does not, of itself confer immunity from legal obligations 
 
 
A Uganda Standard does not purport to include all necessa ry provisions of a contract. Users are 
responsible for its correct application 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
© UNBS 2018 
 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written 
permission from UN BS. 
 
Requests for permission to reproduce this document should be addressed to 
 
The Executive Director 
Uganda National Bureau of Standards 
P.O. Box 6329 
Kampala 
Uganda 
Tel: +256 417 333 250/1/2 
Fax: +256 414 286 123 
E-mail: info@unbs.go.ug 
Web: www.unbs.go.ug 
 
 
 
 
 
 
 
 
 
ii                                                                                                                  © UNBS 2018 - All rights reservedDUS DEAS 468: 2018  
 
 
 
 
 
 
 
 
National foreword 
 
 
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and 
Cooperatives established under Cap 327, of the Laws of Uganda, as amended.  UNBS is mandated to co- 
ordinate the elaboration of standards and is 
(a)  a member of Internat ional Organisation for Standardisation (ISO) and 
 
(b)  a contact point for the WHO/FAO  Codex Alimentarius Commission on Food Standards, and 
 
(c)  the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO). 
 
 
The  work  of  prepar ing  Uganda  Standards  is  carried  out  through  Technical  Committees.  A  Technical 
Committee is established to deliberate on standards in a given field or area and consists of representatives of 
consumers, traders, academicians, manufacturers, government and other stakeholders. 
 
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders a nd the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council. 
This Draft Uganda Standard, DUS  DEAS 468:2018, Pre-painted metal coated steel sheets and coils — 
Specification, is identical with and has been reproduced from an East African Standard, EAS 468:2018, Pre- 
painted metal coated steel sheets and coils — Specification, and is being propo sed for adoption as a Uganda 
Standard. 
 
This standard was developed by Mechanical engineering and metallurgy Standards Technical Committee 
(UNB S/TC 4). 
 
This second edition cancels and replaces the first edition (US EAS 468:2013), which has been technically 
revised. 
 
Wherever the word s, “East African Standard " appear, they should be replaced by "Uganda Standard." 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
© UNBS 2018 - All rights reserved                                                                                                                iii 
 
 
 
 
 
 
 
DRAFT EAST AFRICAN STANDARD  
DEAS 468
 
 
 
 
DEAS   468-   Pre-painted   metal   coated   steel   sheets   and   coils   — 
Specification 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EAST AFRICAN COMMUNITY  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
© EAC 2016                                                                                                                         Third Edition 2014
DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
Copyright notice 
 
This  EAC  document is  copyright-prote cted by  EAC. While  the  reproduc tion of  this  document by 
participants in the EAC standards development process is permitted without prior permission from EAC, 
neither this document nor any extract from it may be reproduced, stored  or transmitted in any form for 
any other purpose without prior written permission from EAC. 
 
Requests for permission to reproduce this document for the purpose of selling it should be addressed 
as shown below or to EAC’s member body in the country of the requester: 
 
© East African Community 2013  — All rights reserved 
East African Community 
P.O.Box 1096 
Arusha 
Tanzania 
Tel: 255 27 2504253/8 
Fax: 255 27 2504481/2504255 
E-mail: eac@eachq.org 
Web: www .eac-quality.net 
 
Repro duction for  sales  purposes may be  subject to  royalty payments or  a  licensing  a greement. 
Violators may be persecuted 
 
DEAS 468 
 
 
 
 
 
 
 
 
Foreword 
 
 
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, tra de barriers that are encountered  when goods and services are exchanged 
within the Community will be removed. 
 
 
In order  to achieve this objective, the Community established an East African Standards Committee mandated 
to develop and issue East African Standards. 
 
 
The Committee is composed of representatives of  the National Standards Bodies in Partner States, together 
with the representatives from the private  sectors and consumer organ izations. Draft East African Standards 
are circulated to stakeholders throu gh the National Standards Bodies in the Partner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance  with the procedures 
of the Community. 
 
East African Standards are subject to review, to keep pace with technological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing. 
 
EAS 468 was prepared by Technical Committee EASC/TC 035, Steel and steel product s. 
 
This third edition cancels and replaces the second edition (EAS 468:2008) which has been technically revised. 
 
 
 
 
 
 
 
 
Pre-painted metal coated ste el sheets and coils — Specification 
 
 
 
 
 
1    Scope 
 
This East Africa Draft Standard specifies requirements, test methods  and sampling for the pre-painted 
hot-dip metal-coated steel sheets and coils for exterior use . 
 
 
 
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. 
 
ASTM D 4956, Standard specification for retroreflective sheeting for traffic control 
 
EAS 11, Galvanized plain and corrugated iron sheets — Specification 
 
EAS 85-15, Paints, varnishes, lacquers and enamels  —  Methods of  test  —  Part  15:  Determination of 
resistance to neutral salt spray (Corrosion test) 
 
EAS 410, Hot-dip aluminium-zinc coated plain and corrugated steel sheets — Specification 
 
ISO 15184, Paints and varnishes — Determination of film hardness by pencil test 
 
 
 
3    Terms  and definitio ns 
 
For the purposes of this standard, the following terms and definitions shall apply. 
 
3.1 
bottom side 
side of pre-painted sheet opposite the exposed weathering side 
 
3.2 
top (face) side 
side of the pre-painted sheet, which is exp osed to weathering 
 
3.3 
coil coating  
continuous process by which paint and other coatings are applied and baked onto a metal coated flat steel 
sheet 
 
3.4 
roll former 
apparatus that forms a continuous strip of metal into various shapes by a series of contoured steel rolls 
 
 
 
© EAC 2013 – All rights reservedDEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
 
3.5 
paint  
organic liquid generally pigmented, which is converted to a solid film by baking 
 
3.6 
Top coat 
paint film on the surface which is exposed to weathering 
 
NOTE         The topcoat provides colour and durability and also acts as protection against atmospheric corrosion. Different 
topcoats are selected based on the performance or appea rance requirements desired. 
 
3.7 
primer  
first complete layer of paint of a coating system applied to an uncoated surface; the type of primer varies with 
the type of surface and its condition, the intended purpose, and the coating system being used  
 
3.8 
Wash coat 
thin organic coating applied to the back or unexposed side of the pre-painted sheet (also known as a backer 
coat) 
 
NOTE         The purpose of the wash coat is to provide protection against damage to the top-side coating during shipment 
and storage and also provide some additional durability to the unexposed side during the service life of the product. 
 
3.9 
chalk ing 
formation on a pigmented coating of a friable powder  evolved from the film itself at or just beneath the surface 
 
3.10 
fade 
loss in colour intensity experienced by pigmented organic coatings over time, generally due to the effect of 
ultraviolet radiation 
 
3.11 
gloss 
lustre, shininess or reflecting ability of a surface 
 
3.12 
sheets  
broad,  thin, mass or pieces of metal including flat and profiled 
 
3.13 
substrate  
base material upon the surface of which an adhesive-containing substance is spread for coating 
 
NOTE         The subs trate is available in several different steel sheet quali ties and with different metallic coatings as 
specified in clause 4, depending on the requirements of the purchaser. For the purposes of this standard, substrate refers 
to the steel sheet and metallic coating. 
 
3.14 
exter ior surface 
any pre-painted metal surface exposed to weathering including and not limited to roofing and cladding 
 
 
 
4    Substr ate 
 
The substrate shall conform to all the requirements of EAS 11 and EAS 410 as per appropriate specification 
for the quality order ed.DEAS 468 DEAS 468  
 
 
 
 
 
 
 
5    Classification and  symbol  
 
5.1   Classification of durability of paint coatings 
 
5.1.1    The durability of paint coatings shall be classified into three classes, and their symbols shall be as 
given in Table 1. 
 
 
Table 1 — Classification of durability of paint  coatings and desig nations 
 
 
 
Classification  
Symbol  
Dura bility 
Class 1 1 Two or more coats having durability as specified in Table 3 
Class 2 2 Two coats having durability as specified in Table 3 
Class 3 3 One coat having durability as specified in Table 3 
 
NOTE        For sheets and coils for which the quality is guaran teed for both sides, the classes of paint coating durability 
which have differences between the face side and the rever se side may be altered by agree ment between the purchaser 
and the manufacturer. 
 
5.1.2    The classes of  paint coating, durability for the face side and the reverse side shall be expressed in 2- 
digit figures consisting of a combination of the designation of durability for the individual sides. 
Example:  
3  2 
 
Reverse side, Class 2 
 
Face side, Class 3
 
3       3 
 
Reverse side, Class 3 
Face side, Class 3 
 
 
5.1.3    For both-side paint coating for which the quality is guarant eed for the face only, the non-guaranteed 
side shall be expressed by the digit 0. 
 
Example: 
2      0 
 
Reverse side, not guaranteed 
Face side, Class 
 
5.1.4  The term  “guarant ee” mentioned shall mean that  the  pro duct is  in  compliance with  the  quality 
requirements specified in Clauses 6, 8, 10 and 12. 
 
5.2   Classification of applications 
 
5.2.1    Sheets and coils shall be classified into eight types, and their classified symbols shall be as given in 
Table 2.DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
 
Table 2 — Classification of sheets  and coils  
 
 
 
Classified symbol  
Nominal thickness (base coated 
metal) 
 
mm  
 
Application  
 
Classified symbol 
of base metal 
CGCC 0.25 ≤ x ≤ 1.6 Commercial soft SGCC 
CGCH 0.25 ≤ x ≤ 1.0 Commercial hard SGCH 
CGCD 1  0.40 ≤ x ≤. 1.6 Drawing SGCD 1  
CGC 340 0.25 ≤ x ≤ 1.6  
 
 
 
 
Structural SGC 340 
CGC 400 0.25 ≤ x ≤. 1.6 SGC 400 
CGC 440 0.25 ≤ x ≤ 1.6 SGC 440 
CGC 490 0.25 ≤ x ≤ 1.6 SGC 490 
CGC 570 0.25 ≤ x ≤. 1.6 SGC 570 
NOTE 1      G refers to the type of metal coating as described in EAS 11 and EAS 410. 
 
NOTE 2      Nominal thickness other than those listed in the above table may be decided as agreed upon 
between the purchaser and the manufacturer. 
 
NOTE 3      Exampl es of indications for types of sheets and coils are given in Annex A. 
 
5.2.2    For the type of coating and the coating mass on the base coated metal for paint coating, EAS 11 and 
EAS 410 shall apply. 
 
5.2.3    Coating systems supplied under this standard shall consist of primer coat covered by various types 
and thicknesses of topcoats except class 3.  The combination of primer and topcoat shall be classed as either 
a two coat thin film system or as a two coat (or more) thick film system. The organic coating shall consist of a 
primer and a topcoat on the top (exposed) side and an optional wash coat on the bottom (unexposed) side 
that can either be tinted or non-tinted. 
 
5.2.4    In the case of sheets and coils for roofing and architectural sidings the symbol R for roofing and the 
symbol A for architectural siding shall be suffixed to the classified symbols given in Table 2 
 
5.2.5    For sheets and coils subjected to corrugating, the symbol W and the shape symbol for corrugated 
sheets shall be suffixed to the classified symbols given in Table 2. 
 
5.2.6    For corrugation, the commercial soft and the commercial hard qualities listed in Table 2 shall be used. 
 
5.2.7  For roofing and architectu ral siding uses (exterior exposed building product s) Class 2 or higher in the 
classification of paint coating durability shall be applied. 
 
. 
 
 
 
6    Paint coating du rability 
 
6.1  Sheets and coils shall be subjected to the durability test given in Table 3. The salt spray test shall be 
carried out in accordance with 13.2.1 and 13.4, and no defects, except for slight blistering and rust on the test 
piece, shall be found on the test piece as a result of this test having been continued for the duration of time 
specified in Table 3.DEAS 468 DEAS 468  
 
 
 
 
 
 
 
Table 3 — Durability test (salt spray and weathering test) 
 
 
Coating class Gloss Colour DFT(pri mer) Minimum 
duration of salt 
spray test Minimum duration 
acce lerated 
weathering test 
Class 1 30 % loss Delta E of 4 4 µ - 6 µ 2000 h 1500 h 
Class 2 35 % loss Delta E of 6 4 µ - 6 µ 500 h 1000 h 
 
Class 3 40 % loss Delta E of 8 Not 
applicable  
200 h 500 h 
NOTE         Delta E is a single number that represents the “distance” between two colou rs 
 
6.2     For class 3 in the classification of  paint coating durability the  symbol indicating a coating mass of Z 27 
(equivalent for other coatings) or more shall be applied to the base metal for paint coating. 
 
6.3     When sheets and coils of Class 3 in the durability classification are subjected to the dew-cycle type 
accelerated weathering test  in  accordance  with  the  provision of  13.2.2  and  13.4,  they shall  not  show 
substantial discoloration, fading or substantial chalking as a result of the test having been continued for the 
duration of time specified in Table 3(Delta E minimum). 
 
 
 
7    Surfa ce protective treatments  
 
For prote ctive treatments after painting when  applied on the surface of sheets and coils, the types and 
symbols shall be given in Table 4. 
 
 
Table 4 — Classification of surface  protective treatments and their symbols 
 
Classification of surface protective treats Symbol 
Protective films P 
Wax application T 
 
 
8    Physical properties  of paint coatings  
 
8.1  After being tested for items marked with “X” in Table 5 in accordance  with 13.3 and 13.4, sheets and coils 
shall, by visual inspection, be free from the defects given in Table 5.DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
 
Table 5 — Physical properties of paint  coatings 
 
 
 
 
 
 
Characteristics  
Comme rcial 
hard 
(CGCH); 
 
Structural 
(CGC 570) Comme rcial, 
Drawing (CGCC, 
CGCD 1) 
 
Structural 
 
(CGC 
340,400,440,490)  
 
 
 
Requirements  
 
 
 
Test method 
 
Bending 
adhesion  
–  
X No peeling on the outer surface of the bent 
portion not less than 7 mm apart from 
either side edge of the test piece  
13.3.2 (Bend test) 
 
Paint film  
X  
X  
No scratch marks on the paint film 13.3.3 (pencil 
hardness test) 
Impact 
resistance  
–  
X  
No peeling  
13.3.4 (Impact test) 
 
Adhesion  
X  
–  
No irregularities on the tested portion 13.3.5 (Cross scoring 
test) 
Flexibility X X No peeling Flexibility test 
 
Abrasion  
X  
X No burnished appearance in rubbe d area 
after  100  double  rubs  on both  topcoat 
and wash coat.  
13.3.6 (Abrasion 
[MEK] test) 
 
8.2     Test items for sheets and coils for roofing, architectu ral siding, and corrugation shall be in accordance 
with Table 5. 
 
8.3     Paint adhesion and peeling shall be checked by applying standard filament tape. 
 
 
 
9    Dimensions  
 
9.1     The dimensions of sheets and coils shall be expressed in millimetres  
 
9.2     The standard nominal thickness of sheets and coils shall be in accordance  with EAS 11 and EAS 410. 
 
 
 
10  Paint coating (dry film thickness) 
 
10.1 Primer 
 
The purpose of the primer is to serve as the bond between  the substrate a nd the topcoat and to offer added 
corrosion protection for the entire system. The primer shall be compatible with the topcoat in order to ensure 
optimum propert ies of the coating system. For th is reason, the primer is usually not specified by the purchaser 
but it is generally selected by the coating supplier or pre-painted sheet producer  for optimum compatibility. 
 
For b uilding products, primer thickness shall be 5 µm with tolerance of ± 1 µm. High performance primers with 
films as thick as 75 µm with tolerance of ± 8 µm may be specified. 
 
10.2 Wash c oat 
 
For building products, wash coat thickness shall be 8 µm with tolerance of ± 1 µm.DEAS 468 DEAS 468  
 
 
 
 
 
 
 
10.3 Top coat  
 
10.3.1  Different  topcoats shall be selected based on the performance or appearance requirements desired. 
For building products, topcoat thickness shall be 15 µm with tolerance of ± 5 µm. High-performance topcoats 
may be specified. Other upgraded  systems may specify the application of two  or more layers of topcoats. 
 
10.3.2  The top coat shall be applied for the exposed side of the sheet. However the unexposed side may be 
ordered  with the same coating as the topside. 
 
10.3.3  A wash coat or backer coat shall be applied to the bottom side. 
 
NOTE         The selection of a topcoat depends on the performance parameters required such as chalking and fading, plus 
the corrosion resistance needed, which shall take into account the severity of the service environment. 
 
 
11  Shapes  
 
11.1 Camber 
 
Maximum camber values for sheets and coils shall be as given in Table 6. 
 
Table 6 — Maximum camber values  
Dimensions in millimetres  
 
 
 
Width Length 
Flat sheet/ Coil 
≤2000  ˃ 2 000 
≤ 630 4 4 in any 2 000 of length 
˃ 630 2 2 in any 2 000 of length 
 
11.2 Deviation from squareness 
 
Deviations from squareness  for flat sheets shall be expressed by A/W x 100 (%) as shown in Figure 1 and 
shall not exceed 0.3 %. 
 
 
 
 
Figure 1 — Deviations from squa reness  for flat sheets 
 
11.3 Flatness 
 
11.3.1  Flatness for sheets shall be as given in Table 7.
DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
Table 7 — Flatness  
 
Dimensions in millimetres
 
 
Width Classification, max. 
Bow Edge wave Center buckle 
≤ 1 000 12 8 6 
 
1 000 ˂ x ≤1 250  
15  
10  
8 
 
11.3.2  Flatness of sheets shall be determined as they are placed on a surface plate. The value shall be 
obtained by subtracting the sheet thickness from maximum deviation from the horizontal flat surface and the 
flatness shall be applied to the upper surface of the sheet. 
 
 
 
12  Appearance 
 
Sheets and coils shall be free from defects detrimental to practical use. However, in the case of coils, they 
may contain some abnormal imperfections, including welds and floating. 
 
 
 
13  Te sts 
 
13.1 General 
 
The propert ies of  the substrate a nd the organic coating system, combined with the method of forming, determine 
the life expectancy and general appearance of the final product.  Each coating system has different qualities in 
regard to gloss, flexibility, fading, chalking, and resistance to cracking at bends, abrasion resistance, dirt 
retention, and resistance to varying atmospheric conditions. All of these factors should be considered in any 
end application. The test methods used to measure some of these parameters shall be in accordance  with EAS 
11 and EAS 410. 
 
13.2 Endurance tests for coatings 
 
13.2.1 Salt spray test 
 
The salt spray test shall be done as follows: 
 
a)   a test piece shall be 50 mm or more in width and 100 mm or more in length; and 
b)   the testing method shall comply with EAS 85-15. 
13.2.2 Accelerated weathering test 
 
The accelerated weathering test shall be as follows. 
 
a)   a test piece shall be 50 mm or more in width and 100 mm or more in length; and 
 
b)   the testing method shall comply with the accelerated weathering test specified in ASTM D 4956. 
 
13.3 Tests for physical  properties of paint coating 
 
13.3.1 Sampling of test specimens 
 
For corrugated sheets, test specimens shall be taken from flat sheets prior to corrugation.DEAS 468 DEAS 468  
 
 
  
 
 
 
 
 
 
 
 
BLIC  
 
 
 
 
Specimens shall be taken from prod ucts of the same quality, dimensions, coating mass, and color 
 
The sampling of test specimens for the T-bend, pencil hardness, impact, cross-scoring and abrasion (MEK) 
tests  shall comply with the following requirements: 
 
a)   for  continuously paint-coated coils  or  cut  length  from  continuously paint-coated coils,  one  test 
specimen shall be taken from each 50 t or its fraction; 
 
b)   for sheets manufactured  by paint-coating base metal cut to a specified length, one test specimen shall 
be taken from n ot more than 3 000 sheets; 
 
c)   apply zinc coating weight test for galvanized plain substrate;  
 
d)   apply aluminium zinc and silicon weight test for the 55 % aluminium zinc substrate; and 
 
e)   the testing method shall comply with the accelerated weathering test specified in ASTM D 4956. 
 
13.3.2 Bend  test 
 
The bend test shall be as follows: 
 
a)   The test piece shall have a width of 75 mm to 125 mm and a length suited for the test.   U nless 
otherwise specified, one test piece shall be cut out of each test specimen paralleled to the rolling 
direction of the base metal. 
 
b)   By referring to the internal spacing of bend shown in Table 8, the test piece shall be bent manually as 
shown in Figure 2 
 
 
 
 
 
 
 
 
Figure 2— Direction of bend test 
 
c)   The bend test shall be applied to the symbols indicating coating masses of Z 27 (equivalent for other 
coatings) and under. For sheets and coils using an alloyed type as base metal for paint coating, the 
above shall be used  as reference only. 
 
d)   For sheets and coils for roofing, architectural siding, and corrugation, the internal spacing of bend 
shall be in accordan ce with that for, the relevant classified symbol in Table 8.
DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
 
Table 8 — Internal spacing of bend 
 
 
Classified symbol  
Bend angle Nominal thickness, 
 
mm Internal spacing of bend 
CGCC 180 ≤ 0.40 2 sheets of nominal thickness 
CGCH – 0.40, ˂ x ≤ 1.6 3 sheets of nominal thickness 
 
CGCD 1   
1800.40 ≤ x ≤ 1.6 2 sheets of nominal thickness 
0.40 ˂ x ≤ 0.40 3 sheets of nominal thickness 
 
CGC 400  
180≤. 0.40 3 sheets of nominal thickness 
0.40 ˂ x ≤ 1.6 3 sheets of nominal thickness 
 
CGC 440  
180≤ 0.40 4 sheets of nominal thickness 
0.40 ˂ x ≤ 1.6 5 sheets of nominal thickness 
 
13.3.3 Pencil hardness test 
 
The pencil hardness test shall be as follows: 
 
a)   a pencil having the hardness symbols given in Table 9 and meeting the requirements of ISO 15184 
shall be used; 
 
 
Table 9 — Symbols for pencil hard ness 
 
Dura bility classification Hard ness symbol 
Class 1 H 
Class 2 H 
Class 3 F 
 
b)   the pencil shall be sharpened so as to expose about 3 mm of lead. While being held at right angles to 
an abrasive paper of No. 400 or finer which has been laid on a hard, flat surface, the point of the lead 
shall be made to draw  a continuous circle gently and thus be ground down so as to obtain a flat surface 
with sharp edges at the tip. The tip of t he lead shall be ground flat for each test; 
 
c)   holding the prepa red pencil at about 45º to the surface of the test specimen, straight lines shall be 
drawn with it in the direction shown Figure 3, with the load being applied of about 10 N; and 
 
d)   the lines shall be not less than 20 mm in length and not less than three  in number. 
 
 
 
 
 
 
Figure 3 — Pencil  hardness testing method
DEAS 468 DEAS 468  
 
 
  
 
 
 
 
DRA 
REVIEW  
 
 
 
 
13.3.4 Impact test 
 
The impact test shall be as follows: 
 
a)   a weight shall be dropped onto a test face from a Du Point type impact tester, as shown in Figure 4; 
 
b)   the mass of the weight shall be 500 g  1 g, and the radius of the impact point shall be 6.35 mm ± 
0.03 mm; and 
 
c)   the weight shall be dropped from a height of 500 mm above the test piece. 
 
 
 
 
 
 
Figure 4 — Du Point Impact-deformation tester 
 
13.3.5 Cross -scoring  test 
 
The scoring test shall be as follows: 
 
a)   straight lines shall be scored with a safety razor blade or other pointed objects so as to reach the 
surface of the coating through the paint film and to form squares; and 
 
b)   eleven straight lines shall be scored crosswise at right angles, at intervals of 1 mm. 
 
13.3.6 Abrasion (MEK) test 
 
 
13.3.6.1   Apparatus 
 
The following apparatus and materials shall be used for the abrasion (MEK) test: 
 
a)   test piece (100 mm x 200 mm); 
 
b)   MEK (Methyl Ethyl Ketone); 
 
c)   cheese cloth;
DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
 
d)   squeeze bottle; and 
 
e)   solvent resistant gloves. 
 
13.3.6.2   Procedure 
 
The abrasion test shall be done as follows: 
 
a)   select an area of the coated surface to be teste d. Clean the area with tap water and a dry cloth. Mark 
a section of  the cleaned area, measuring 150 mm by 25 mm with a solvent resistant marker, in which 
to perform the MEK double rubs; and 
 
b)   fold a 300 mm square piece of cheese cloth so that the thickness is doubled and saturate  it until 
dripping wet with MEK. Place an index finger in the center of the cheese cloth and gather the remaining 
cloth. With the index finger at a 45° angle to the surface, rub with moderate pressure over the  marked 
area.  Do not allow more than 10 s to elapse between  wetting the cloth and beginning to rub the coating. 
Wet the cloth as often as needed without lifting it from the surface. One forward and backward motion 
constitutes one double rub. Do a control test adjacent to the MEK test area. Use only a dry clean 
cloth rubbed in the same manner as the original test  for the control test to establish the  effects of the 
cloth on the coating. 
 
13.4 Cautions for testing 
 
The tests require the following cautions: 
 
a)   since  the  durability and  physical  pr operties  of  sheets  and  coils  are  affected  by  environmental 
conditions and by paint coating flaws incurred in handling, hair cracks on processed surfaces, etc., 
testing shall be conducted on flat sheets with normal surfaces; and 
 
b)   the temperature for tests on physical properties shall be from 5  C to 35 C. 
 
 
 
14  Inspection 
 
Inspection shall be as follows: 
 
a)    the durability test is a performance test, and the test results shall comply with the requirements in 
Clause 6; 
 
b) the results of tests  and inspection on the physical properties of paint coatings, dimensions, shape 
and appearance shall satisfy the requirements specified in Clauses 6, 8, 9, 10, 11 and 12; and 
 
c) when part of the test results for physical properties fail to meet the requirements, a retest using 
double the number of test pieces taken from the same lot is permitted. 
 
 
 
15  Marking 
 
15.1 Reverse s ide m arking 
 
15.1.1  For the sheets and coils which have passed inspection and the quality of which is guarant eed for one 
side only, the reverse side markings shall be as shown in Figure 5. 
 
For both-side guarantees, the sheets and coils shall be marked only when so specified. 
 
15.1.2  Each sheet or coil shall be permanently and legibly marked.DEAS 468 DEAS 468  
 
 
 
 
 
 
 
15.1.3  For roofing, the following shall be indicated: 
 
a)   manufacturer’s name and/or trade  name; 
 
b)   nominal thickness; 
 
c)   batch number; and 
 
d)   designation of the substrate. 
 
15.1.4  For other  than roofing the following items may be indicated, upon agreement between the purchaser 
and the manufacturer: 
 
a)   manufacturer’s name or trade name; 
 
b)   nominal thickness; 
 
c)   classified symbol (including shape symbol for corrugated sheets); 
 
d)   batch number; and 
 
e)   designation of the substrate. 
 
15.2 Package mar king 
 
Where sheets and coils are packed, each package shall be marked permanently and legibly with the following 
information: 
 
a)   manufacturer’s name and/or trade  name; 
 
b)   classified symbol (including shape symbol for profiled sheets); 
 
c)   name of colour; 
 
d)   symbol indicating coating mass; 
 
e)   dimensions; and 
 
f)    number of sheets or mass where applicable. 
 
 
 
16  St orage, transportation and fabri cation 
 
16.1   Cautionary measures for storag e, transportation, and fabrication shall be supplied with every sale in 
accordance  with 16.2 to 16 .4. 
 
16.2   For the storage of sheets and coils, selection of a well-ventilated indoor place virtually free from dust 
and moisture should be specified. Mixed loading with corrosive substances such as chemicals should be 
avoided. 
 
16.3 Every precaution should be taken against paint coating damage and contact with water during 
transportation and transfer. 
 
16.4   The formability of paint coatings deteriorates with the descent of temperature.  When sheets and coils 
stored  in a low-temperature warehouse are to be fabricated, the temperature of the material should be elevated 
to normal temperature.DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
  
 
 
REVIEW 
PUBLIC  
 
 
 
 
16.5   The indication of sheets and coils shall normally be made in terms of classified symbol, symbol for 
guaranteed side(s), symbol for surface prote ctive treatments, symbol indicating coating mass, name of colour, 
and dimensions, as given in Figure 5. 
 
 
 
 
Figure 5(a) — For sheet 
 
 
 
 
 
 
Figure 5(b) — For coil 
 
 
 
DEAS 468 DEAS 468  
 
 
 
 
 
 
 
Figure 5(c) — For roofing (coil) 
 
 
 
 
 
Figure 5(d) — For corrugated sheet  using commercial, hard 
 
Figure 5 — Indications for sheets and coils
DEAS 468 DEAS 468 
© EAC 2016 – All rights reserved  
 
 
 
 
 
 
 
Annex A 
(informative) 
 
Exam ples of indications for types of sheets and coils 
 
 
 
 
Examples of indications for types of sheets and coils are given as follows: 
 
     CGCC-20 
 
Pre-painted hot-dip zinc-coated steel sheets and coils, commercial, Class 2, one-side guaranteed 
 
     CGCCR-22 
 
Pre-painted hot-dip zinc-coated steel sheets and coils for roofing, using Commercial Quality, Class 2, 
both-side guaranteed 
 
     CGC 400-32 
 
Pre-painted hot-dip zinc-coated steel sheets and coil, structural, Class 3 (Class 2 for reverse side), 
both-side guaranteed 
 
     CGCCR-20 W2 
 
Corrugated steel sheets for roofing of pre-painted hot-dip zinc-coated steel sheets and coils, using 
Commercial Quality, Class 2, one-side guaranteedDEAS 468 DEAS 468  
 
 
 
 
 
 
 
Annex B 
(informative) 
 
Ordering information 
 
 
 
 
B.1    The coated flat sheet covered by this standard is produced on continuous lines to decimal thickness 
only. The thickness of the sheet includes the base steel and the metallic coating. The thickness of the organic 
system is in addition to the substrate (base steel and metallic coating). 
 
B.2    Orders for material under this specification should include the following information, as applicable, to 
describe the required product adequately: 
 
a)   product  name (pre-painted steel sheet); 
 
b)   designation of substrate, (including quality designation and grade, if required; 
 
c)   metallic coating type and weight; 
 
d)   organic coating system designation; 
 
e)   d ry organic film thickness top side and bottom side (the top side typically consists of a primer and 
topcoat and the bottom side a primer and a wash coat; however the bottom side may be ordered to 
the same quality as the top side); 
 
f)    prote ction required (waxed or strippable coating); 
 
g)   dimensions (thickness, width, either flat or formed (overall or cover) and length (if cut length) and, if 
applicable, type of formed configuration; 
 
h)   coil size requirement: maximum outside diameter, acceptable inside diameter, and maximum weight 
(mass); 
 
i)    cut length requirement maximum lift weight (mass); 
 
j)    special requirements, if any; and 
 
k)   application (part identification and description).