Materials System Specification
09-SAMSS-101 31 August 2003
Qualification Requirements
for Self-Priming Epoxy Mastic Coatings
Paints and Coatings Standards Committee Members
Barouky, F.F., Chairman
Hammad, B.S., Vice Chairman
Al-Homayed, M.A.
Al-Khashram, M.S.
Al-Nujaim, S.A.
Al-Seba, Z.A.
Suller, A.A.
Saudi Aramco DeskTop Standards
Table of Contents
1 Scope............................................................. 2
2 Conflicts and Deviations................................ 2
3 References.................................................... 3
4 General Requirements................................... 4
5 Qualification Tests and Requirements........... 5
6 Method of Packaging..................................... 9
Previous Issue: 28 February 1999 Next Planned Update: 1 September 2008
Revised paragraphs are indicated in the right margin Page 1 of 9
Primary contact: Fikry F. Barouky on 872-5116
Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
1 Scope
This Specification defines the minimum mandatory requirements for qualifying
individual coating products for use in Saudi Aramco's approved protective coating
systems APCS-26 and APCS-26T. It shall be used when any of the following situations
occur:
1.1 Initial Product Approval
This specification shall be given to coating manufacturers, or other vendors of
coating products, who wish to obtain initial approval for products that have not
previously been qualified in accordance with this specification.
1.2 Purchase Requisitions/Purchase Orders
This specification shall be attached to Purchase Requisitions or Purchase Orders
when those documents address the procurement of coating products that have
not been previously qualified in accordance with this specification.
Exception:
This specification does not apply to, and should not be included with, Purchase
orders or requisitions for coating products that have been previously qualified per
this specification. This specification should also not be included with purchase
orders or requisitions for coated items or equipment when a Saudi Aramco
approved protective coating system has been specified.
1.3 Periodic Product Compliance Checks
This specification should be used for periodic product compliance checks on
previously approved coatings. It shall be given to the organization conducting
the compliance tests.
2 Conflicts and Deviations
2.1 Any conflicts between this specification and other applicable Saudi Aramco
Materials System Specifications (SAMSS), Engineering Standards (SAES),
Standard Drawings (SASD) or industry standards, codes, and forms shall be
resolved in writing by the Company or Buyer Representative through the
Manager, Consulting Services Department.
2.2 Direct all requests to deviate from this specification in writing to the Company or
Buyer Representative, who shall follow internal company procedure SAEP-302
and forward such requests to the Manager, Consulting Services Department of
Saudi Aramco, Dhahran.
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
3 References
Material or equipment supplied to this specification shall comply with the latest edition
of the references listed below, unless otherwise noted.
3.1 Saudi Aramco References
Saudi Aramco Engineering Procedure
SAEP-302 Instructions for Obtaining a Waiver of a
Mandatory Saudi Aramco Engineering
Requirement
Saudi Aramco Materials System Specification
09-SAMSS-060 Packaging Requirements for Coatings
Saudi Aramco Engineering Standards
SAES-H-101 APCS-26 Epoxy Mastic Coating (Self-priming)
SAES-H-101 APCS-26T Epoxy Mastic with Top Coat Aliphatic
Polyurethane Coating System
SAES-H-101 APCS-1B Epoxy Coating System for Atmospheric Service
(with Epoxy Primer)
SAES-H-101 APCS-4 Aluminum-pigmented Alkyd Coating System
SAES-H-101 APCS-6 High Gloss Enamel System for Metal Surfaces
(with Inorganic Zinc Primer)
3.2 Industry Codes and Standards
American Society for Testing and Materials
ASTM A36 Structural Steel
ASTM B117 Specification for Salt Spray (Fog) Testing
ASTM D16 Definition of Terms Relating to Paints, Varnishes,
Lacquers, and Related Products
ASTM D523 Specular Gloss
ASTM D610 Evaluating Degree of Rusting on Painted Steel
Surfaces
ASTM D660 Evaluating Degree of Checking of Exterior
PaintSAs
ASTM D661 Evaluating Degree of Cracking of Exterior Paints
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
ASTM D714 Evaluating Degree of Blistering of Paints
ASTM D822 Operating Light-and-water Exposure Apparatus
(Carbon-arc Type) for Testing Paint, Varnish,
Lacquer, and Related Products
ASTM D1640 Drying, Curing or Film Formation of Organic
Coatings at Room Temperature
ASTM D1654 Methods for Evaluation of Painted or Coated
Specimens Subjected to Corrosive
Environments
ASTM D1849 Package Stability of Paint
ASTM D2805 Hiding Power of Paints
ASTM G26 Operating Light-exposure Apparatus (Xenon-arc
Type) with and without Water for Exposure of
Nonmetallic Material
Swedish Standard Institute
SIS 05 59 00 Pictorial Surface Preparation Standard for
Painting Steel Structures
Sa2 Blast Cleaning (Commercial Blast)
Sa 2.5 Thorough Blast Cleaning (Near White)
The Society for Protective Coatings
SSPC-PA2 Measurement of Dry Paint Thickness with
Magnetic Gauges
SSPC-VIS 1 Pictorial Surface Preparation Standards for
Painting Steel Surfaces
SSPC-SP6 Commercial Blast Cleaning
SSPC-SP10 Near White Blast Cleaning
4 General Requirements
4.1 For purposes of this specification, the Buyer's Representative shall be the
Responsible Standardization Agency Representative (RSA).
4.2 In order to qualify a coating system as acceptable under this specification, the
coating supplier shall submit a certified test report documenting that the
proposed coating system meets the qualification tests and requirements of this
SAMSS. Preparation and testing shall be performed and/or witnessed by an
independent laboratory or inspection agency. This report shall be submitted to
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
the Saudi Aramco RSA for review and approval if the data presented by the
Supplier satisfied all the requirements.
4.3 All initial product qualification tests and any other laboratory tests that Saudi
Aramco sees necessary to qualify this product shall be carried out at no cost to
Saudi Aramco.
5 Qualification Tests and Requirements
5.1 Physical Property Tests
5.1.1 Package Stability of Paint
When stored at 52 ± 3°C for 6 months in accordance with ASTM D1849,
the sample shall meet the following requirements:
a) Weight loss - 0
b) Skinning, pressure and corrosion - 10
c) Settling - 6 or better
d) Grains, lumps, or streaks - 8 or better
5.1.2 Spray Properties
The ready-mixed coating shall be easily applied at the following dry film
thickness to a vertical surface with no tendency to orange peel, sag, creep
or run:
• Epoxy mastic (APCS-26 and APCS-26T): 200 micrometers (8 mils)
• Polyurethane (APCS 26T only): 65 micrometers (2.5 mils)
5.1.3 Drying Times
When tested in accordance with ASTM D1640, the drying times shall be
as follows:
Epoxy mastic (APCS-26 and APCS-26T)
Dry-to-touch: 6 hours or less
Dry-to-handle: 20 hours or less
Polyurethane (APCS 26T only)
Dry-to-touch: 2 hours or less
Dry-to-handle: 8 hours or less
5.1.4 Usable Potlife
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
At 40°C, the viscosity of the ready-mixed paint shall remain within the
range recommended by the manufacturer for spray ability without
additional thinning for not less than the following times:
• Epoxy mastic: 30 minutes
• Polyurethane topcoat (APCS-26T only): 1 hour
5.1.5 Adhesion Test
a) Prepare test panels as described in paragraph 5.2. Allow the
coating to cure as shown in Table 1.
Table 1
DRYING TIME
COATING SUBSTRATE
AT 25 ± 1 ؛C
APCS-26
Epoxy Mastic Steel 5 days
APCS-26T
Epoxy Mastic Primer Steel 3 days
Polyurethane Topcoat Primer 5 days
b) Determine the adhesion of the epoxy mastic to the steel substrate
(and for APCS-26T, the adhesion of the polyurethane topcoat to the
epoxy mastic primer) by using an adhesion tester, 450 kg capacity.
Lightly sand the coated surface and the aluminum dolly. Apply an
epoxy adhesive and allow it to cure as directed by the adhesive
supplier. Scribe the coating and adhesive around the dolly prior to
testing. Make a minimum of three trials and report the average.
The average shall be at least 1375 kPa (200 psi) for the epoxy
mastic-to-steel interface when applied as a maintenance coating on
old and sound coating, and 2570 kPa (400 psi) for the epoxy
mastic-to-steel and polyurethane-to-epoxy mastic interface when
applied on new steel.
5.2 Test Panel Preparation
5.2.1 Surface Preparation
a) Make the test panels from ASTM A36 hot-rolled steel
approximately 100 mm X 150 mm. Prior to preparation of the
surface, the condition of the test panel shall be equivalent to SSPC-
guide to VIS 1 Rust Grade C, Rusted. The minimum thickness of
the test panels shall be 5 mm.
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
b) The surface cleanliness of the test panels shall meet the
requirements of SSPC SP6, Commercial Blast (SIS Sa2, Thorough
Blast Cleaning).
c) The profile of the blasted surface shall be 50-65 micrometers
(2 - 2.5 mils).
5.2.2 Coatings Application
a) Mix, apply, and cure the coatings in accordance with the
Manufacturer's recommendations given in the materials data sheet.
b) Measure and record the dry film thickness in accordance with
SSPC PA2.
c) The dry film thickness shall be:
APCS-26
Maintenance: 125-200 microns (5-8 mils) in one coat
New Structural Steel: 200 – 300 microns (8-12mils) in two coats
APCS-26T
For Maintenance
Epoxy mastic coat: 125 - 200 microns (5-8 mils) in one coat.
Topcoat: 40-65 micrometers (1.5 - 2.5 mils) in one coat.
5.3 Performance Tests
5.3.1 Prepare two panels in accordance with paragraph 5.2 and scribe them in
accordance with ASTM D1654. Expose the panels alternately in a
weather-o-meter in accordance with either ASTM D822, Procedure B or
ASTM G26, Method B for 100 hours, and in a salt fog cabinet in
accordance with ASTM B117 for 200 hours. Alternate the panels
between test apparatuses until a total of 1000 hours in the salt fog has
been achieved.
At the conclusion of the test, each coating shall meet the criteria in
Table 2.
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
Table 2
STANDARD ACCEPTABLE RATING REMARKS
APCS-26 and APCS-26T
ASTM D714 Evaluating Degree of Blistering No blisters
Paints
ASTM D660 Evaluating Degree of Checking of No checking
Exterior Paints
ASTM D661 Evaluating Degree of Cracking of No cracking
Exterior Paints
ASTM D610 Evaluating Degree of Rusting on 8 or better
Painted Steel Surfaces
ASTM D1654 Standard Evaluation of Painted or Rating of failure at scribe
Coated Specimens Subjected to shall be 8 or better
Corrosive Environments
APCS-26T Only
N/A Erosion No more than 10% of the
total average thickness
has been removed
ASTM D523 Specular Gloss The reduction in gloss of
the tested sample shall
not exceed 20% as
compared to an untested
sample
5.3.2 For APCS-26T, the polyurethane topcoat shall be Type V Polyol-cured
Aliphatic as defined in ASTM D16. When tested in accordance with
ASTM D2805, the minimum contrast ratio shall be 0.94 except for red
colors, which shall be 0.88 minimum.
5.3.3 Maximum Service Temperature
The maximum service temperatures of the coating systems shall be as
follows:
• For APCS-26: 120ºC
• For APCS-26T: 80ºC
To verify compliance with these requirements, conduct adhesion tests on
coated panels that have been prepared in accordance with paragraph
5.1.5 and then exposed in an oven for 14 days at the appropriate
temperature listed above. The adhesion shall be at least 90% of that
obtained on samples prepared and tested in accordance with paragraph
5.1.5 but not subsequently exposed in an oven.
5.4 Overcoat Compatibility Test
Prepare one panel each with APCS-1B, APCS-4, and APCS-6 coating systems
(total of 3 panels). After the coatings have air cured for 7 days, place them in an
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Document Responsibility: Paints and Coatings 09-SAMSS-101
Issue Date: 31 August 2003 Qualification Requirements
Next Planned Update: 1 September 2008 for Self-Priming Epoxy Mastic Coatings
oven at 71 ± 1ºC. Remove them from the oven after 48 hours and allow them to
condition in a laboratory environment for 24 hours. Brush apply a coat of epoxy
mastic on each panel at a minimum dry film thickness of 125 micrometers.
After curing for 48 hours in a laboratory environment, there shall be no evidence
of wrinkling, blistering, loss of gloss, lifting or other signs of incompatibility on
any of the panels.
6 Method of Packaging
Coatings shall be packaged in accordance with 09-SAMSS-060.
Revision Summary
31 August, 2003 Revised the "Next Planned Update". Reaffirmed the contents of the document, and
reissued with minor changes.
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