GB/T 19292.3-2018 Corrosion of metals and alloys—Corrosivity of atmospheres—Part 3:Measurement of environmental parameters affecting corrosivity of atmospheres (English Version)
GB/T 19292.3-2018 Corrosion of metals and alloys - Corrosivity of atmospheres - Part 3: Measurement of environmental parameters affecting corrosivity of atmospheres
1 Scope
This part of GB/T 19292 specifies methods for measuring the parameters needed for corrosivity estimation used for classification of the corrosivity of atmospheres in GB/T 19292.1.
The methods for the measurement of environmental parameters specified in this part are applicable to:
——Normative corrosivity estimation based on first-year corrosion rates of standard specimens; and
——Informative corrosivity estimation based on characterization of the exposure environment.
This part does not describe the usual analytical techniques for the measured parameters since this depends on the available analytical techniques used in laboratories. Specific methods for deposition rate measurement of SO2 and Cl-, and the correlation between different measuring methods are presented in Annexes A, B, C, D, E and F.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 9223 Corrosion of metals and alloys - Corrosivity of atmospheres - Classification, determination and estimation
ISO 11844-3 Corrosion of metals and alloys - Classification of low corrosivity of indoor atmospheres - Part 3: Measurement of environmental parameters affecting indoor corrosivity
3 Principle
Different environmental parameters and their combinations affect the corrosivity of the atmosphere. Two methods for corrosivity estimation (normative and informative) are specified in ISO 9223.
In general, two groups of parameters are obtained or measured for standardized procedures of corrosivity estimation:
Foreword i Introduction iii 1 Scope 2 Normative references 3 Principle 4 Humidity and temperature parameters 4.1 Relative humidity 4.2 Temperature 5 Airborne contaminants 5.1 Principle 5.2 Placement of measurement equipment 5.3 Measurement methods and duration Annex A (Normative) Determination of sulfur dioxide deposition rate on lead dioxide sulfation plates Annex B (Normative) Determination of sulfur dioxide deposition rate on lead dioxide sulfation cylinder Annex C (Normative) Determination of sulfur dioxide (SO2) deposition rate on alkaline surfaces Annex D (Normative) Determination of chloride deposition rate by the wet candle method Annex E (Normative) Determination of chloride deposition rate by dry plate method Annex F (Normative) Comparison of chloride and sulfur dioxide deposition rates determined by different methods Bibliography
Standard
GB/T 19292.3-2018 Corrosion of metals and alloys—Corrosivity of atmospheres—Part 3:Measurement of environmental parameters affecting corrosivity of atmospheres (English Version)
Standard No.
GB/T 19292.3-2018
Status
valid
Language
English
File Format
PDF
Word Count
12500 words
Price(USD)
330.0
Implemented on
2019-2-1
Delivery
via email in 1 business day
Detail of GB/T 19292.3-2018
Standard No.
GB/T 19292.3-2018
English Name
Corrosion of metals and alloys—Corrosivity of atmospheres—Part 3:Measurement of environmental parameters affecting corrosivity of atmospheres
GB/T 19292.3-2018 Corrosion of metals and alloys - Corrosivity of atmospheres - Part 3: Measurement of environmental parameters affecting corrosivity of atmospheres
1 Scope
This part of GB/T 19292 specifies methods for measuring the parameters needed for corrosivity estimation used for classification of the corrosivity of atmospheres in GB/T 19292.1.
The methods for the measurement of environmental parameters specified in this part are applicable to:
——Normative corrosivity estimation based on first-year corrosion rates of standard specimens; and
——Informative corrosivity estimation based on characterization of the exposure environment.
This part does not describe the usual analytical techniques for the measured parameters since this depends on the available analytical techniques used in laboratories. Specific methods for deposition rate measurement of SO2 and Cl-, and the correlation between different measuring methods are presented in Annexes A, B, C, D, E and F.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 9223 Corrosion of metals and alloys - Corrosivity of atmospheres - Classification, determination and estimation
ISO 11844-3 Corrosion of metals and alloys - Classification of low corrosivity of indoor atmospheres - Part 3: Measurement of environmental parameters affecting indoor corrosivity
3 Principle
Different environmental parameters and their combinations affect the corrosivity of the atmosphere. Two methods for corrosivity estimation (normative and informative) are specified in ISO 9223.
In general, two groups of parameters are obtained or measured for standardized procedures of corrosivity estimation:
Contents of GB/T 19292.3-2018
Foreword i
Introduction iii
1 Scope
2 Normative references
3 Principle
4 Humidity and temperature parameters
4.1 Relative humidity
4.2 Temperature
5 Airborne contaminants
5.1 Principle
5.2 Placement of measurement equipment
5.3 Measurement methods and duration
Annex A (Normative) Determination of sulfur dioxide deposition rate on lead dioxide sulfation plates
Annex B (Normative) Determination of sulfur dioxide deposition rate on lead dioxide sulfation cylinder
Annex C (Normative) Determination of sulfur dioxide (SO2) deposition rate on alkaline surfaces
Annex D (Normative) Determination of chloride deposition rate by the wet candle method
Annex E (Normative) Determination of chloride deposition rate by dry plate method
Annex F (Normative) Comparison of chloride and sulfur dioxide deposition rates determined by different methods
Bibliography
