Evaluation of Suprabha VCI Paper

Background: P.K. Mathew has interest in the evaluation of Suprabha VCI paper and the comparison with Cortec VpCI-146 paper.

Purpose: Evaluate the corrosion protection offered by Suprabha VCI paper.

Method: Razor Blade Test

VIA Test

F-12 Test

SO2 Test

NO2- Test

Materials: Razor Blade Test Kit

VIA Test Kit

F-12 Test Kit

SO2 Test Kit

NO2- Test Kit

Procedure: The above tests were performed according to standard procedures for each.

Results:

Razor Blade Test

Material

Panel #1

Panel #2

Panel #3

Suprabha VCI paper

Fail

Fail

Fail

Cortec VpCI-146 Paper*

Pass

Pass

Pass

Control

Fail

Fail

Fail

* Typical results for Cortec VpCI-146 paper.

VIA Test

Material

Panel #1

Panel #2

Panel #3

Suprabha VCI paper

Grade 3

Grade 3

Grade 3

Cortec VpCI-146 Paper*

Grade 3

Grade 3

Grade 3

Control

Fail

Fail

Fail

* Typical results for Cortec VpCI-146 paper.

F-12 Test

Material

Panel #1

Panel #2

Panel #3

Suprabha VCI paper

Grade 1

---

---

Cortec VpCI-146 Paper*

Grade 3

Grade 3

Grade 3

Control

Fail

Fail

Fail

* Typical results for Cortec VpCI-146 paper.

** Note: Due to lack of Suprabha VCI paper, only able to perform test on one panel.

SO2 Test

Material

Panel #1

Panel #2

Panel #3

Suprabha VCI paper

Grade 0

Grade 1

Grade 2

Cortec VpCI-146 Paper*

Grade 3

Grade 3

Grade 3

Control

Fail

Fail

Fail

* Typical results for Cortec VpCI-146 paper.

VIA Test Grades

 

 

SO2 Grades (Grade 3 and 4 are passing):

Grade 0- Extensive corrosion covering 25% or more of panel surface

Grade 1- Moderate corrosion covering 10-25% of panel surface

Grade 2- Slight corrosion covering 5-10% of panel surface

Grade 3- Very slight corrosion covering 0-5% of panel surface

Grade 4- No visible corrosion on panel surface

F-12 Grades (Grade 2 or 3 is passing):

Grade 0- Moderate corrosion covering 10-25% of panel surface

Grade 1- Slight corrosion covering 5-10% of panel surface

Grade 2- Very slight corrosion covering 0-5% of panel surface

Grade 3- No visible corrosion on panel surface

Control- Corrosion covering 5% or more of panel surface

NO2- Test: No nitrites were detected in Suprabha VCI paper.

Conclusion: Suprabha VCI paper provides vapor corrosion inhibitor protection but very limited contact or barrier protection.

Project #: 01-363-1125

Time Spent on Project: 2 hours

To: P.K. Mathew/Bechem OKS Lubricants

From: Bob Berg

Date: 1/25/02

cc: Boris Miksic

Anna Vignetti

Art Ahlbrecht

Cliff Cracauer

Bob Boyle

Rita Kharshan

Christophe Chandler

Vanessa Schultz