BS 3373:1970

Co-operating organizations
Foreword
Specification
1 Scope
2 General
3 Definitions
4 Freedom from defects
5 Chemical composition
6 Condition
7 Sizes and tolerances
8 Selection of test samples
9 Mechanical tests
10 Retests
11 Certificate of compliance
12 Inspection
13 Independent test
14 Facilities for testing
15 The rounding of numbers rule
Appendix
A Forms of material available
Tables
1 Bars and sections: grouping into batches
2 Tubes: grouping into batches
3 Chemical composition and mechanical properties of
    magnesium alloy extruded bars, sections and tubes
    (including extruded forging stock)
4 Tolerances on length
5 Tolerances on width and diameter of bars, regular
    sections and hollow sections
6 Tolerances on thickness of bars and regular sections
7 Tolerances on open ends of channels and I-beams
8 Angular tolerances for extruded sections
9 Normal radii for corners
10 Tolerances on wall thickness of extruded round tube
11 Tolerances on outside diameter of extruded round
    tube, or on inside diameter of Class A and Class B
    extruded round tube
12 Tolerances on thickness of hollow sections
13 Tolerances on straightness for extruded bar, regular
    sections and extruded round tube
14 Tolerances on twist for extruded solid and hollow
    sections
Figure
1 Tolerances on open ends of channels and I-beams

Specifies requirements for magnesium alloy extruded bars, section and tubes made from seven alloys. It also covers extruded forgings stock in these materials.