BS ISO 3116:2019 pdf download – Magnesium and magnesium alloys — Wrought magnesium and magnesium alloys
This document specifies the chemical composition and mechanical properties of magnesium and magnesium alloys for wrought products in the form of bars and solid sections, tubes and hollow sections, forgings, and plate and sheet.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 80000-1:2009, Quantities and units — Part 1: General
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
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4 Designation
4.1 Material
The material shall be designated by symbols as given in Tables 1 to 47.
The designation for alloys shall consist of a prefix character “M”, which represents magnesium, and not more than three capital letters representing the alloying elements specified in the greatest amount, arranged in order of decreasing percentages, or in alphabetical order if of equal percentages, followed by the respective percentages rounded off to whole numbers and a serial letter in lower case. The letters used to represent the alloying elements shall be those in Table 1. The third letter is used when the third largest amount of element is above or equal to 1 wt.%. If the third and fourth largest amount of elements are above or equal to 1, the higher amount of elements is taken; if of equal percentage, the third letter is decided by the producer who developed the alloy.
Details of heat treatments are given in Annex C.
4.3 Designations of product form
The following symbols shall be used for product form:
— B: bars and solid sections;
— T: tubes and hollow sections;
— F: forgings;
— P: plate and sheet.
4.4 Designation for ordering
An order for magnesium bars, conforming to this document, of magnesium alloy MAZ31a, delivered in the asfabricated condition (F) is as follows:
ISO 3116 – ISO-MgAl3Zn1 (A) (or MAZ31a) – F – B
Tonnage and dimensions shall be specified in addition.
5 Requirements
5.1 Chemical composition
The chemical composition of wrought magnesium alloys, taken as cast analysis at the time the material is cast, shall conform to the requirements for the appropriate material given in Table 2.
5.2 Mechanical properties
The minimum values of the mechanical properties of wrought products in magnesium alloys in the defined temper conditions shall be as given in Tables 3 to 48.
5.3 Frequency of testing
The frequency of testing shall be subject to an agreement between the manufacturer and the purchaser.
6 Sampling
Conditions for sampling, formation of batches and frequency of verification shall be subject to an agreement between the manufacturer and the purchaser.
7 Test pieces
Test pieces shall be taken in the longitudinal direction. For rolled flat products of thickness > 0,6 mm,test pieces may be taken in the long transverse direction.
8 Test methods
8.1 Chemical composition
The determination of the alloying elements given in Table 2 shall be performed in accordance with the relevant International Standards, or other standards as agreed between the supplier and the customer.
8.2 Tensile test
Tensile tests shall be carried out in accordance with ISO 6892-1.
9 Retests
Conditions for retests shall be subject to an agreement between the manufacturer and the purchaser.
10 Rounding of results
The number representing the result for any value specified in this document shall be expressed to  the same number of decimal places as the corresponding number in this document. The rounding ofnumbers shall meet the requirements of ISO 80000-1:2009, B.3, rule A or B. The choice shall be left to the discretion of the manufacturer, unless the use of one of the rules is agreed by the time of acceptance of the order.BS ISO 3116 pdf download.