Highland International 74-HF

RAE Engineering and Inspection Ltd. May 2011
NACE TM0185 – Evaluation of Internal Plastic Coatings for
Corrosion Control of Tubular Goods by Autoclave Testing.

Adhesion
Method: ASTM D4541 – Standard Test Method for Pull-Off Strength
System: Two coats 74 Series at 8 mils DFT per coat applied to:

1. SSPC-SP6 Commercial Blast prepared steel
2. No surface preparation

Result:

1. No less than 1400 psi with SPPC-SP6 Commercial Blast
2. No less than 1000 psi with no surface preparation.

Chemical Immersion
Method: Continuous Immersion at 93°C (200°F)
System: Two coats 74 Series at 8 mils DFT per coat applied to SSPC-SP5 White Metal Blast prepared steel. Cured 14 days at 21°C (70°F).
Result: No cracking, lifting, or delamination after 60 days of continuous exposure.
Reagents: 10% methanol, 50% methanol, 10% sulfuric acid, 25% sulfuric acid, 10% sodium hydroxide, 50%Sodium hydroxide.

Heat Resistance
Method: Continuous heat exposure at 232°C (450°F)
System: Two coats 74 Series at 8 mils DFT per coat applied to:

1. SSPC-SP56 Commercial Blast prepared steel
2. No surface preparation
3. No surface preparation with tight rust. Cured 14 days at 21°C (70°F).

Result: No cracking, lifting, or delamination of the film after 3000 hours of continuous exposure.

Acid Condensation Bath
Method: Coated panels exposed to a condensation bath with 50% sulfuric acid and water. The test duration was 1000 hours total at 177°C (350°F) and the panels were scribed with an “X” to evaluate corrosion. The acid bath was performed in an enclosed apparatus that retained the sulfuric acid condensation, and the panels were suspended in the headspace.
System: Single coat as well as two coats 74 Series at 8 mils DFT per coat applied to SSPC-SP6 Commercial Blast prepared steel. Cured 24 hours at 21°C (70°F).
Result: No rust creepage, softening, cracking or delamination of the film after 1000 hours of continuous exposure.

Sulfuric Acid Spot Testing
Method: Continuous heat at 177°C (350°F) for 1500 hours. After 1500 hours, spot testing was performed with 98% sulfuric acid for 72 hours.
System: Two coats 74 Series at 8 mils DFT per coat applied to SSPC-SP6 Commercial Blast prepared steel. Cured 24 hours at 21°C (70°F).
Result: No softening or cracking of the film (some discoloration was observed.

Charter Coating Services Ltd. July 2011
Method: NACE TM0185 – Evaluation of Internal Plastic Coatings for Corrosion Control of Tubular Goods by Autoclave Testing.
Test Conditions:

• Temperature: 45°C/ 203°F
• Pressure: 1800 psi
• Gas Phase: 5% H2S, 5% CO2, 90% CH4
• Organic Phase: Toluene: Xylene 1:1 ratio
• Aqueous Phase: 5% NaCl
• Duration: Cycle 1 - 96 hours/ Cycle 2 – additional 48 hours (rapid depressurization)

System: Two coats 74 Series at 5-8 mils DFT per coat applied to SSPC-SP 5 White Metal Blast prepared steel.
Cycle 1 Results:

• Blistering – the test panel remained free of blisters in all three phases
• Adhesion – The maintained an A rating in all three phases
• Depressurization – no effect from 1500psi to atmospheric over duration of 120 minutes
• Cycle 2 Results: (Additional 48 Hours Test with Rapid Decompression from 1800psi to atmospheric in 5 Minutes at 95°C/203°F)
• Blistering – The coating showed reactions to the rapid decompression condition as indicated by minor blistering (D#6), the blisters did not extend to substrate.
• No holidays were detected.
• Adhesion – The coating maintained excellent adhesion (rating A) after exposure.

• Use normal precautions such as gloves, facemasks and barrier creams.
• Adequate ventilation must be maintained. In confined areas, applicators must wear constant flow airline respirators.
• If product comes into contact with skin, wash thoroughly with lukewarm water or diluted Boric Acid, and obtain immediate medical attention.
• This product contains Flammable materials. Keep away from sparks and open flames. Observe no smoking regulations.
• All electrical equipment and installations should conform to NEC regulations. In areas where explosion hazards exist, workmen should be required to use nonferrous tools, and to wear conductive, non sparking shoes.
• Observe low flash regulations.