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ASTM-C1617:2005 Edition

ASTM-C1617:2005 Edition

$40.63

C1617-05 Standard Practice for Quantitative Accelerated Laboratory Evaluation of Extraction Solutions Containing Ions Leached from Thermal Insulation on Aqueous Corrosion of Metals

Published By Publication Date Number of Pages
ASTM 2005 10
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1.1 This practice covers procedures for a quantitative accelerated laboratory evaluation of the influence of extraction solutions containing ions leached from thermal insulation on the aqueous corrosion of metals. The primary intent of the practice is for use with thermal insulation and associated materials that contribute to, or alternatively inhibit, the aqueous corrosion of different types and grades of metals due to soluble ions that are leached by water from within the insulation. The quantitative evaluation criteria are Mass Loss Corrosion Rate (MLCR) determined from the weight loss due to corrosion of exposed metal coupons after they are cleaned.

1.2 The insulation extraction solutions prepared for use in the test can be altered by the addition of corrosive ions to the solutions to simulate contamination from an external source. Ions expected to provide corrosion inhibition can be added to investigate their inhibitory effect.

1.3 Prepared laboratory standard solutions are used as reference solutions and controls, to provide a means of calibration and comparison. See Fig 1.

1.4 Other liquids can be tested for their potential corrosiveness including cooling tower water, boiler feed, and chemical stocks. Added chemical inhibitors or protective coatings applied to the metal can also be evaluated using the general guidelines of the practice.

1.5 This practice cannot cover all possible field conditions that contribute to aqueous corrosion. The intent is to provide an accelerated means to obtain a non-subjective numeric value for judging the potential contribution to the corrosion of metals that can come from ions contained in thermal insulation materials or other experimental solutions. The calculated numeric value is the mass loss corrosion rate. This calculation is based on general corrosion spread equally over the test duration and the exposed area of the experimental cells created for the test. Corrosion found in field situations and this accelerated test also involves pitting and edge effects and the rate changes over time.

1.6 The measurement values stated in inch-pound units are to be regarded as standard.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
2 Summary of Practice
FIG. 1
3 Significance and Use
Apparatus
4 Reagents and Materials
Metal Coupon Preparation
Solution Preparation
5 FIG. 2
FIG. 3
FIG. 4
6 Test Procedure
Cleaning Coupons
7 Inspection of Coupons
TABLE 1
8 Report
Precision and Bias
Keywords
X1. ACCESSORIES
X1.1 Hot Plates
FIG. X1.1
9 X1.2 Peristaltic Pump and Accessories
X2. RUGGEDNESS VARIABLES
X2.1 Uncontrolled Variables
X2.2 Controlled Variables
10 X3. SHORT HISTORY OF THE TASK GROUP
X3.1
X3.2
X3.3
X3.4
X3.5

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