ISO/TC 18 - Zinc and zinc alloys

ISO 301:2006 specifies the designations, chemical compositions, marking and other requirements for zinc alloys, in ingots (or liquid form), produced for foundry purposes.

ISO 1169:2006 specifies a titrimetric method for the determination of aluminium in zinc alloys. It is applicable to the products specified in ISO 301. It is suitable for the determination of aluminium contents (mass fractions) between 3 % and 30 %.

ISO 3750:2006 specifies a flame atomic absorption spectrometric method for the determination of magnesium in zinc alloys. It is applicable to the products specified in ISO 301 and ISO 752. It is suitable for the determination of magnesium contents (mass fractions) between 0,002 % and 0,08 %.

ISO 3815-2:2005 specifies analytical methods for determining the chemical composition of zinc and zinc alloys in accordance with ISO 301 and ISO 752 by inductively coupled optical emission spectrometry. ISO 3815-2:2005 includes provisions for preparation of test solutions and calibration solutions for zinc and zinc alloys. The ranges specified for each method can be extended and/or adapted for determinations of low concentrations. ISO 3815-2:2005 can be applied to other elements (e.g. Ni, Cr and Ti). However, such results will need to be carefully checked by taking into account the interferences, the sensivity, the resolution and the linearity criteria for each instrument and each wavelength.

ISO 3815-1:2005 specifies analytical methods for determining the chemical composition of zinc and zinc alloys in accordance with ISO 301 and ISO 752 by optical emission spectrometry. ISO 3815-1:2005 includes recommendations for preparation of test pieces from zinc and zinc alloys.

ISO 20081:2005 specifies the requirements for sampling of zinc and zinc alloys, as specified in ISO 752 and ISO 301, for analysis.

ISO 752:2004 specifies the classifications, chemical compositions, markings and other requirements for primary zinc. It includes a table of related grades of zinc which are recognized in other International Standards. This International Standard is applicable to primary zinc only and does not include requirements for secondary zinc produced by re-melting.

The method is applicable to all zinc types provided that their copper content is 0,01 % maximum. The determination is suitable for iron contents between 0,001 and 0,01 %. This standard specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.

The ingots shall have a mass of 5 to 20 kg, shall be of a shape which permits stacking, may include notches which allow them to be broken up if necessary into small pieces and may include cast-on feet. The marking is specified. Designations and chemical compositions of ingots are given in a table.

Specifies the designations and chemical compositions of qualities of zinc ingots with a minimum zinc content of 98,5 % (m/m), obtained by treatment of ores or of other zinc-bearing materials by a process of chemical or electrolytic reduction or by distillation.

Sampling may be carried out either by drilling or by sawing slices. Both methods of sampling provide a sample for possible analyses by other standardized methods. Applies only to samples from zinc alloy ingots. Alternatively, the interested parties may agree to select samples of zinc alloy in the liquid state during production.

Specifies the objective criteria which make it possible to assess the value of the results obtained in each particular case. It is not intended to prescribe a type of apparatus or a procedure for converting the instrument response to concentrations units because of the broad range of equipment available and the difficulty of completely specifying all working conditions in a spectrographic installation. The spectrographic analysis shall be carried out on solid metallic samples that should refer to standard samples.

Sampling may be carried out either by drilling or by sawing slices. Both methods of sampling provide a sample for possible analyses by other standardized methods. ISO 3816 applies only to samples from zinc ingots. Alternatively, the interested parties may agree to select samples of zinc in the liquid state during production.

Covers only the selection and preparation of samples from zinc alloy ingots. Alternatively, the interested parties may agree to select samples of zinc alloy in the liquid state during production.

Covers only the selection and preparation of samples from zinc ingots. Alternatively, the interested parties may agree to select samples of zinc in the liquid state during production.

This method is applicable to the zinc alloys defined in ISO 301. It is suitable for the determination of magnesium contents between 0,01 and 0,08 %. ISO 3750 specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.

Specifies two methods applicable to Zn 99,995, Zn 99,99, Zn 99,95, Zn 99,5 and Zn 98,5. The first method is suitable for the determination of copper contents between 0,0005 and 0,005 %. The second method applies to copper contents between 0,0025 and 0,1 %.

The method is applicable to Zn 99,5, Zn 98,5 and Zn 98 and is suitable for the determination of lead contents between 0,1 and 3 %. Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.

The method is applicable to certain zinc alloys (see ISO 301) and to die castings made from these alloys. Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.

The method is applicable to zinc alloy Zn Al 4 Cu 1. It is suitable for the determination of copper contents between 0,5 and 3,5 %. This International Standard specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.

This method applies to the following types of zinc: Zn 99,95, Zn 99,5, Zn 98,5 and Zn 98 having cadmium contents between 0,01 and 0,5 %. It does not apply to zinc the copper content of which is more than four times higher as the cadmium content.

The method is applicable to Zn 99,995, Zn 99,99 and Zn 99,95. Although these types of zinc do not normally contain any thallium or indium, these two elements, if present, can interfere in this determination. The method is suitable for the determination of lead and cadmium contents between 0,001 and 0,05 %.

The method is applicable to the following zinc alloys: Zn Al 4, Zn Al 4 Cu 1, Zn Al 4 Cu 3, Zn Al 11 Cu 1. It is moreover applicable to die castings made from these alloys, and to zinc containing more than 0,01 % of copper. The method is suitable for the determination of iron contents between 0,01 and 0,08 %.

The method is applicable to certain types of zinc (see ISO 752) and to certain zinc alloys (see ISO 301) and to die castings made from these alloys. It allows generally the determination of tin contents between 0,0005 and 0,005 %. Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.

The method is applicable to zinc alloys given in ISO 301 and to die castings made from these alloys. It is suitable for the determination of magnesium contents between 0,01 und 0,1 %. Specifies principle, reagents, apparatus, sampling expression of results, procedure and test report.

The method is applicable to the zinc alloys given in ISO 301. It is suitable for the determination of lead and cadmium contents over 0,0005 %. An application is permissible to zinc alloys not containing copper. Specifies principle, reagents, apparatus, sampling, procedure and test report.