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
Chinese Name:	金属和合金的腐蚀 大气腐蚀性 第3部分：影响大气腐蚀性环境参数的测量
Chinese Classification:	H25    Metal chemical property test method
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2018-05-14
Implemented on:	2019-2-1
Status:	valid
Superseding:	GB/T 19292.3-2003 Corrosion of metals and alloys—Corrosivity of atmospheres—Measurement of pollution
Target Language:	English
File Format:	PDF
Word Count:	12500 words
Translation Price(USD):	330.0
Delivery:	via email in 1 business day

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