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sklademVydáno: 1995-05-01
BS EN ISO 4538:1995
Metallic coatings. Thioacetamide corrosion test (TAA test)
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| Označení normy: | BS EN ISO 4538:1995 |
| Počet stran: | 12 |
| Vydáno: | 1995-05-01 |
| ISBN: | 0 580 10504 0 |
| Status: | Standard |
DESCRIPTION
BS EN ISO 4538:1995
This standard BS EN ISO 4538:1995 Metallic coatings. Thioacetamide corrosion test (TAA test) is classified in these ICS categories:
- 25.220.40 Metallic coatings
Reagents, apparatus and procedure for assessing the efficiency of tarnish-preventing treatments of silver and gold and for detecting discontinuities in precious metal coatings by exposure to an atmosphere containing volatile sulphides. Gives guidance on the number and type of test specimens, the exposure period and criteria of failure.