Chemical Resistance of Cured Rust Bullet Coating at 6 mil DFT (HCl 5% & HCl 10%)

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The Scope

The following is a copy of a letter summarizing two tests performed at the University of Nevada, Reno.
View the entire original letter here.

SUBJECT: SUMMARY OF 2 TESTS ON YOUR CORROSION PROTECTION COMPOUND.

 

Dear Mr. Murphy,
Reference the above and the sample sent to me for testing the corrosion protection of the above compound as compared to Rustoleum.

Rust Preventatives
Rod #1 is coated with Rust-oleum®,
Rod #2 is coated with Rust Bullet®

Summary of Expt. #1:
Two stainless steel rods were sprayed with Rustoleum and coated with your compound, dried for 12 hours at 20° C, and then immersed in hydrochloric acid, approximately 5% by weight.

After immersing the same for 8.5 hours, at room temperature, the Rustoleum coating peeled off, whereas your compound’s coating remained intact.

CONCLUSION:
YOUR COMPOUND WORKS BETTER THAN RUSTOLEUM.

Rust prevention
Nipple #1 is the Control Nipple,
Nipple #2 is two coats of Rust-oleum®,
Nipple #3 is one coat of Rust Bullet®

Summary of Expt. #2:
Three identical six inch long black iron nipples were sanded, washed and dried, then immersed in about 10% hydrochloric acid.

The first nipple was sanded and immersed in the acid as-is, whereas the second nipple was coated, twice, with Rustoleum and the third nipple was coated with your product.

The nipples were dried, two with the coatings, for two hours and 26 minutes at 30° C, thereafter the nipples were immersed in the above acid, SG of 1.052.

After four hours, the Rustoleum was peeling, whereas your compound was intact.

After 6 hours and 20 minutes, Rustoleum was completely removed, whereas the as-is nipple showed normal corrosion and your product’s coating was intact.

After 16 hours and 27 minutes your coating was still intact, whereas, the Rustoleum was long gone, as above, and the as-is showed accelerated acid corrosion.

CONCLUSION:
YOUR COMPOUND WORKS BETTER THAN RUSTOLEUM.

A copy of the formal report is available at the top of this page.

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