RUSTPROTECTION_WITH_EVERLAST

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The Fraunhofer Institute for Production Technology and Automation

TECHNICAL REPORT 23/08/99

"Anti-Rust-Coating-EVERLAST® C.A.R.O.L"

1.Scope of
investigation The Fraunhofer IPA -Stuttgart- was commisioned to examine the
corrosion protection antirust coating "EVERLAST®C.A.R.O.L. with regard
to its technical properties and coating performance.The investigation
should cover the corrosion protection properties respectively the
protection properties with regard to weather exposure as well as
some immersion tests with chemicals.

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2.Tests performed
and their results Steel plates- free vom any rust-were coated with EVERLAST®C.A.R.O.L
antirust-coating in accordance with the directions for use.First a thin
film of the bonding agent FIX-IT was applied to the steel plate and
then this bond layer was coated with EVERLAST®C.A.R.O.L. using a
doctor blade.The samples were left to age for 7 days and were then
subject to the individual tests.

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2.1 Testing of
mechanical
properties ADHESION TESTS
a) Cross-cut test as per ENISO 2409
- performed on samples from the water fog climate testing chamber -
- coating thickness : 50µm -
- Test Result : Cross-Cut Value 0 (= Excellent result ,no adhesion loss)

b) Cross-cut test as per ENISO 2409
- performed on samples from the salt spray testing chamber -
- coating thickness : 50µm -
- Test Result : Cross-Cut Value 0 (= Excellent result ,no adhesion loss)

c) Cupping test as per DN ISO 1520
- performed on samples from the water fog climate testing chamber -
- coating thickness : 50µm -
- Test Result : Cupping Value 7 mm (= Excellent result )

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2.2 Testing of
chemical
resistance Steel plates were coated with 50 µm EVERLAST®C.A.R.O.L.The
samples were left to age for 7 days and were then subject to the
individual tests.

a) 1% Sodium Hydroxide Solution : Some staining (darkening ) but
no loss of surface hardness ( scratch test). No peeling , no blistering.

b) 10% Sulphuric Acid Solution : light staining but no loss of surface
hardness ( scratch test). No peeling, no blistering.

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2.3 Testing of
corrosion protection
properties respectively
protection properties
with regard to weather
exposure. a) ANTI-RUST TESTS performed under water fog climate conditions as
per DIN 50018 - 500 hours :

- coating thickness : 50µm -
- Test Results :
->Cross-Cut Value after 500 hrs exposure 0 (= Excellent result ,
no adhesion loss)
->Degree of blistering after 500 hrs exposure m0 g0 (= Excellent
result ,no blistering, exposed coating surface completely intact)

b) Anti-Rust test performed under SALT (NaCl ) SPRAY conditions
as per ASTM B 117 - 500 hours :

- coating thickness : 80µm -
- Test Results :
->Cross-Cut Value after 500 hrs exposure 0 (= Excellent result ,
no adhesion loss)
->Degree of blistering after 500 hrs exposure m0 g0 (= Excellent
result ,no blistering, exposed coating surface completely intact)
Figure 1

The surface of the test plates were given one scratch:
(4,0 cm x 1 mm) .
After the salt spray test, examination showed that no rust had
penetrated below the suface of the coating. (= 0 mm)
(= strong electropassivation action ) Figure 2

Remarks: Some staining of the coating surface after 500 hrs
salt spray exposure.

International degree of rusting : Ri 0 ( best possible value)

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3.Figures Figure 1: Cross-Cut Value before (left) and after (right) 500 hrs salt spray testing
Figure 2: Enlarged view of the scratch 40 mm x 1 mm, after 500 hrs salt spray testing.

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4.References Fraunhofer Institut Produktionstechnik Automatisierung IPA
Nobelstrasse 12
70569 Stuttgart
Germany


The Fraunhofer Institute for Production Technology and Automation TECHNICAL REPORT 23/08/99 "Anti-Rust-Coating-EVERLAST® C.A.R.O.L"
1.Scope of investigation		The Fraunhofer IPA -Stuttgart- was commisioned to examine the corrosion protection antirust coating "EVERLAST®C.A.R.O.L. with regard to its technical properties and coating performance.The investigation should cover the corrosion protection properties respectively the protection properties with regard to weather exposure as well as some immersion tests with chemicals. ==================================================
2.Tests performed and their results		Steel plates- free vom any rust-were coated with EVERLAST®C.A.R.O.L antirust-coating in accordance with the directions for use.First a thin film of the bonding agent FIX-IT was applied to the steel plate and then this bond layer was coated with EVERLAST®C.A.R.O.L. using a doctor blade.The samples were left to age for 7 days and were then subject to the individual tests. ==================================================

2.1 Testing of mechanical properties		ADHESION TESTS a) Cross-cut test as per ENISO 2409 - performed on samples from the water fog climate testing chamber - - coating thickness : 50µm - - Test Result : Cross-Cut Value 0 (= Excellent result ,no adhesion loss) b) Cross-cut test as per ENISO 2409 - performed on samples from the salt spray testing chamber - - coating thickness : 50µm - - Test Result : Cross-Cut Value 0 (= Excellent result ,no adhesion loss) c) Cupping test as per DN ISO 1520 - performed on samples from the water fog climate testing chamber - - coating thickness : 50µm - - Test Result : Cupping Value 7 mm (= Excellent result ) ==================================================

2.2 Testing of chemical resistance		Steel plates were coated with 50 µm EVERLAST®C.A.R.O.L.The samples were left to age for 7 days and were then subject to the individual tests. a) 1% Sodium Hydroxide Solution : Some staining (darkening ) but no loss of surface hardness ( scratch test). No peeling , no blistering. b) 10% Sulphuric Acid Solution : light staining but no loss of surface hardness ( scratch test). No peeling, no blistering. ==================================================
2.3 Testing of corrosion protection properties respectively protection properties with regard to weather exposure.		a) ANTI-RUST TESTS performed under water fog climate conditions as per DIN 50018 - 500 hours : - coating thickness : 50µm - - Test Results : ->Cross-Cut Value after 500 hrs exposure 0 (= Excellent result , no adhesion loss) ->Degree of blistering after 500 hrs exposure m0 g0 (= Excellent result ,no blistering, exposed coating surface completely intact) b) Anti-Rust test performed under SALT (NaCl ) SPRAY conditions as per ASTM B 117 - 500 hours : - coating thickness : 80µm - - Test Results : ->Cross-Cut Value after 500 hrs exposure 0 (= Excellent result , no adhesion loss) ->Degree of blistering after 500 hrs exposure m0 g0 (= Excellent result ,no blistering, exposed coating surface completely intact) Figure 1 The surface of the test plates were given one scratch: (4,0 cm x 1 mm) . After the salt spray test, examination showed that no rust had penetrated below the suface of the coating. (= 0 mm) (= strong electropassivation action ) Figure 2 Remarks: Some staining of the coating surface after 500 hrs salt spray exposure. International degree of rusting : Ri 0 ( best possible value) ==================================================
3.Figures		Figure 1: Cross-Cut Value before (left) and after (right) 500 hrs salt spray testing Figure 2: Enlarged view of the scratch 40 mm x 1 mm, after 500 hrs salt spray testing. ==================================================
4.References		Fraunhofer Institut Produktionstechnik Automatisierung IPA Nobelstrasse 12 70569 Stuttgart Germany