Ref: AES/ENV/HSF/7500/0114-001

ENVIROPEEL ASTM B117 HOT SALT FOG TEST

7500 HOUR UPDATE January 2014

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CONTROL 4500 HRS

7500 HRS

EDGE OF ENCAPSULATION

EDGE OF ENCAPSULATION

Ref: AES/ENV/HSF/7500/0114-001

Result Analysis at 7500 Hours

No sign of any corrosion in the E170 protected area Enviropeel E170 coating has been completely removed

Side-by-side comparison Peeling away the E170 coating reveals the substrate and bolts to be in pristine condition

The 7500 hour sample was taken out and placed on a stand for evaluation

Condition of the control flange after 7500 hours in the salt-spray cabinet

Ref: AES/ENV/HSF/7500/0114-001

Bolts comparison: top - control flange, Bottom - 7500 hour sample & right - 4500 hour sample

Side-by-side comparison of the 7500 hour sample and the control flange

Side-by-side comparison: left - control flange, middle - 4500 hour sample & right - 7500 hour sample

Close-up shot of the bolt and nut A close up side-by-side comparison of the 7500 hour sample and the control flange

Comparison showing the underside of the flanges.

Ref: AES/ENV/HSF/7500/0114-001

CONCLUSION After 4,500 hours of exposure the control flange had significantly deteriorated with high levels of corrosion, whereas the Enviropeel coated sample was completely unaffected – preserved in its original condition. Bolt threads, nuts and all encapsulated surfaces were completely corrosion-free, proving Enviropeel’s effectiveness in eliminating corrosion. The protected substrate showed no signs of deterioration and inhibitor levels in the Enviropeel after 4500 hours remained satisfactory. After 7,500 hours, the control flange has suffered even greater deterioration, whereas both the 4,500 and 7,500 hour samples showed no changes with the substrates well protected. There were no signs of discoloration in the E170 material and the level of inhibitors in the coating and on the substrates was satisfactory. A&E Systems will continue the test until 10,000 hours with the same configuration and some minor technical improvements. This test provides further confirmation of Enviropeel’s impeccable performance record, from successful 3000 hours pre-release testing in 1997 to the following 16 years of successful applications in some of the world’s most challenging environments. Environmental note: E170 is non-toxic, VOC free, reusable and recyclable. The E170 materials used in this test contained material directly recycled from previous applications.

1997

Close up showing the condition of the bolts and nuts after severe exposure to salt environment for 4,500 hours - equivalent to 45 years in normal conditions

2013 2014

Close up showing the condition of the bolts and nuts after severe exposure to salt environment for 7,500 hours - equivalent to 75 years in normal conditions