Name: ISO 21608:2012 — Corrosion of metals and alloys — Test method for isothermal-exposure oxidation testing under high-temperature corrosion conditions for metallic materials
SKU: ISO 21608:2012
Price: 25 EUR
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Overview

ISO 21608:2012 specifies a laboratory test method for isothermal-exposure oxidation testing of metallic materials under high‑temperature corrosion conditions in gaseous environments. It defines how to run continuous or discontinuous isothermal exposures (single or repeated mass measurements) to determine oxidation kinetics, mass-change behaviour (gross and net), and phenomena such as scale formation and breakaway. Thermal‑cycling oxidation tests are explicitly excluded.

Key topics and technical requirements

Test types
- Continuous: single post‑exposure mass measurement for a series of specimens.
- Discontinuous: repeated mass measurements on a specimen with controlled intermediate cooling.
Specimens (test pieces)
- Typical shapes: rectangular plate, disc or cylinder; minimum thickness stated (1.5 mm) and surface finish using abrasives with mean particle diameter ≈15 µm.
- Final machining and cleaning (ultrasonic degreasing with iso‑propanol or ethanol) required; mass measured with high precision (repeat measurements within 0.05 mg).
Exposure scheduling
- Use several exposure times to define oxidation kinetics; duplicate specimens recommended and progressively increasing time intervals (example series shown in the standard).
Test atmosphere and gas supply
- Closed systems (preferred) with controlled gas flow, humidifying regulator and hygrometer; deionized water (

ISO 21608:2012 PDF

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Abstract

Overview

Key topics and technical requirements

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