ISO 2160 Petroleum products - Corrosiveness to copper - Copper strip test
WARNING - The use of this International Standard may involve hazardous materials, operations and equipment. This International Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1 Scope
This International Standard specifies a method for the determination of the corrosiveness to copper of liquid petroleum products and certain solvents. Volatile products, having a maximum vapour pressure of 124 kPa at 37.8 °C are included.
Volatile products with a vapour pressure above 124 kPa at 37.8 °C should be tested according to ISO 6251 (see caution below). Electrical insulating oils should be tested according to ISO 5662.
CAUTION - Some products, particularly natural gasolines, may have a significantly higher vapour pressure than is characteristic for their class, even if below 124 kPa at 37.8 °C. For this reason, extreme caution should be exercised to ensure that the pressure vessel containing such material is not placed in a bath at 100 °C. Such samples may develop sufficient pressure at 100 °C to rupture the pressure vessel and cause damage and/or injury.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 3170:1988, Petroleum liquids - Manual sampling .
ISO 3171:1988, Petroleum liquids - Automatic pipeline sampling.
3 Principle
A polished copper strip is immersed in a specified volume of sample and heated under conditions of temperature and time that are specific to the class of material being tested. Aviation fuels and natural gasolines are tested in a pressure vessel, and other products are tested under atmospheric pressure (see also the note in 8.1). At the end of the heating period, the strip is removed, washed, and the colour assessed against corrosion standards.
