Page 202 - Welding of Aluminium and its Alloys

Welding procedure and welder approval 185

Table 10.2 Test regime to BS EN 288 Part 4

Test piece Type of Extent of testing
form test
1 Butt Visual examination to EN 970 100%
Radiography or ultrasonics 100%
Penetrant examination to EN 571-1 100%
Transverse tensile test to EN 895 2 specimens
Transverse bend test to EN 910 2 root
2 face at and over
12mm thick
4 side bend
coupons may be
substituted for
the root and
face bends
Macro-examination to EN 1321 1 section
Micro-examination to EN 1321 1 section (only for
material groups
22 and 23)
2 Branch Visual examination to EN 970 100%
Penetrant examination to EN 571-1 100%
Radiography or ultrasonics 100%
At and below
50mm diameter
radiography or
ultrasonics is
not mandatory
Macro-examination to EN 1321 2 sections
Micro-examination to EN 1321 1 section (only for
material groups
22 and 23)
3 Fillet Visual examination to EN 970 100%
Penetrant examination to EN 571-1 100%
Macro-examination to EN 1321 2 sections
Micro-examination to EN 1321 1 section (only for
material groups
22 and 23)

The range of approval for dissimilar metal joints is also covered. This is
not included in this chapter – for details reference should be made to clause
8.3.1.2 of the specification. The position of the specimens within the test
piece is also illustrated in Fig. 10.2. Note that the bend coupon radius varies
depending upon the material group and the condition or temper of the test
piece as given in Table 10.3. Note also that allowance for strength loss in
the cross joint tensile test in cold worked or age hardened alloys is allowed
for in Table 2 of the specification.