ISO 10270:2022
Corrosion of metals and alloys — Aqueous corrosion testing of zirconium alloys for use in nuclear power reactors
This document specifies:
a) the determination of mass gain;
b) the surface inspection of products of zirconium and its alloys when corrosion is tested in water at 360 °C or in steam at or above 400 °C;
c) the performance of tests in steam at 10,3 MPa.
This document is applicable to wrought products, castings, powder metallurgy products and weld metals.
This method has been widely used in the development of new alloys, heat-treating practices and for the evaluation of welding techniques. It is applicable for use in its entirety to the extent specified for a product acceptance test, rather than merely a means of assessing performance in service.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Significance
6 Interference
7 Reagents and materials
8 Apparatus
9 Hazards
10 Sampling, test specimens and test units
11 Preparation of apparatus
12 Calibration and standardization
12.1 High mass gain coupon preparation
12.2 Autoclaves
12.3 Use of control coupons
12.4 Calibration
13 Conditioning
13.1 Test water quality
13.2 Autoclave load restrictions
13.3 Test conditions
13.3.1 Temperature
13.3.2 Pressure
13.3.3 Time
13.3.4 Tests
13.4 Specimen preparation
13.4.1 Etched specimens
13.4.2 As-manufacturer specimens
14 Procedure
14.1 Inspection of specimens
14.2 Dimensions, weight and inspection
14.3 Autoclaving
14.3.1 Placing of test specimens
14.3.2 Venting method A
14.3.3 Venting method B
14.3.4 Closed system method C
14.3.5 Refreshed autoclaving, method D
14.4 Post-test measurements and inspection
15 Calculation or interpretation of results
15.1 Calculation of mass gain
15.2 Visual interpretation of surface appearance
15.3 Invalid tests
16 Test report
Annex A (informative) Guide to specimen preparation
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Significance
6 Interference
7 Reagents and materials
8 Apparatus
9 Hazards
10 Sampling, test specimens and test units
11 Preparation of apparatus
12 Calibration and standardization
12.1 High mass gain coupon preparation
12.2 Autoclaves
12.3 Use of control coupons
12.4 Calibration
13 Conditioning
13.1 Test water quality
13.2 Autoclave load restrictions
13.3 Test conditions
13.3.1 Temperature
13.3.2 Pressure
13.3.3 Time
13.3.4 Tests
13.4 Specimen preparation
13.4.1 Etched specimens
13.4.2 As-manufacturer specimens
14 Procedure
14.1 Inspection of specimens
14.2 Dimensions, weight and inspection
14.3 Autoclaving
14.3.1 Placing of test specimens
14.3.2 Venting method A
14.3.3 Venting method B
14.3.4 Closed system method C
14.3.5 Refreshed autoclaving, method D
14.4 Post-test measurements and inspection
15 Calculation or interpretation of results
15.1 Calculation of mass gain
15.2 Visual interpretation of surface appearance
15.3 Invalid tests
16 Test report
Annex A (informative) Guide to specimen preparation
Bibliography