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BS ISO 4680:2022

$167.15

Corrosion of metals and alloys. Uniaxial constant-load test method for evaluating susceptibility of metals and alloys to stress corrosion cracking in high-purity water at high temperatures

Published By Publication Date Number of Pages
BSI 2022 36
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PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative reference
3 Terms and definitions
10 4 Principle
5 Specimens
5.1 General
5.1.1 General requirements
5.1.2 Categories and shapes of specimens
5.1.3 Shapes and dimensions of grips/clevises
5.1.4 Dimensions of specimen shoulder and radius
11 5.1.5 Machined notch
5.1.6 Dimensions of gauge section
5.1.7 Serial loading of multiple specimens
12 5.2 Preparation of specimens
5.2.1 Orientation of specimen sampling
5.2.2 Methods of specimen sampling
5.2.3 Surface finishing
13 5.2.4 Mechanical grinding and polishing
5.2.5 Electrolytic or chemical polishing
5.2.6 Marking
15 6 Test apparatus
6.1 Test set-up
6.2 Loading mechanism
16 6.3 Autoclave
6.4 Circulating loop
17 7 Experimental procedure
7.1 Test environment
7.1.1 General
18 7.1.2 Corrosion potential
7.1.3 Measurement parameters
7.2 Specimen number and applied stress
7.3 Testing procedures
7.3.1 General
19 7.3.2 Test solution adjustment
7.3.3 Temperature control
7.3.4 Loading
7.3.5 Unloading
7.3.6 Completion of test
7.4 Addition of crevice
7.4.1 General
7.4.2 Materials of crevice formation
20 7.4.3 Procedure of crevice addition
7.5 Electrical resistance measurement methods
7.5.1 General
21 7.5.2 Measurement requirements
8 Assessment of results
8.1 Time to failure
8.2 Validity of failure position
8.3 Other evaluation indexes
8.4 Observation of crack morphology
22 8.5 Detection of crack initiation using electrical resistance measurement methods
9 Test report
23 Annex A (informative) A comparison of specimen orientations in standards
25 Annex B (normative) Measuring items of test solution
26 Annex C (informative) Water chemistry conditions and measurement items for simulated BWR and PWR primary water environment tests
28 Annex D (informative) Procedures to interrupt and resume testing
30 Annex E (informative) Electrical resistance measurement methods
33 Annex F (informative) Test report items
35 Bibliography
BS ISO 4680:2022
$167.15