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Amount of visual corrosion and/or delamination in percent of area for each lap shear specimen SWAAT Outdoor HCl + Outdoor Outdoor Outdoor Trailer HCl + Trailer HCl + Trailer + Surface 6 weeks 1 year 1 year 2,5 year 5 year 1 year 1 year Outdoor*, Adhesive 1 year + 1 year DEG XW1044-3 0 0 5 25 50 0 0 0 0 0 0 0 0 0 0 0 0 2 10 10 5 20 25 40 50 0 0 5 5 5 30 30 30 30 30 50 50 60 60 70 DEG B 1494 0 0 0 0 10 0 0 0 10 10 0 0 0 0 10 0 0 0 0 20 0 1 10 10 30 0 0 0 5 5 30 30 30 30 30 50 70 80 85 95 DEG XD4600 70 80 80 90 100 0 0 5 5 5 1 1 5 5 10 0 0 0 10 20 10 20 20 40 40 15 15 15 15 15 50 75 85 100 100 DEG WC2310 0 0 2 2 2 15 15 15 20 20 10 10 20 30 40 0 5 5 5 5 50 50 50 50 50 40 90 95 95 95 ETCH XW1044-3 0 0 0 2 25 0 0 0 0 0 0 0 0 0 2 0 0 0 0 1 0 0 0 0 1 0 0 0 1 1 2 2 5 10 20 ETCH B 1494 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 2 5 5 ETCH XD4600 0 0 1 2 30 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5 0 0 0 1 5 0 0 0 0 0 0 0 5 10 25 0 0 1 1 2 ETCH WC2310 80 100 100 100 100 0 0 0 0 0 0 0 0 0 0 30? 30? 30? 0 0 0 0 0 0 0 0 0 0 1 2 5 10 10 ETCH XB5315 0 1 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ETCH AV119 0 0 0 10 20 0 0 0 0 0 0 0 0 0 0 0 0 0 5 10 10 10 15 30 50 ETCH DP490 50 50 85 100 100 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 * no salt, no sun ETCH 3M 5047 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 TiZr XW1044-3 0 0 0 5 10 0 0 0 0 0 0 0 0 0 2 0 0 0 5 5 0 0 0 5 30 0 0 0 1 1 0 0 1 1 1 10 15 20 25 60 TiZr B 1494 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10 20 25 40 0 0 0 0 1 1 1 1 1 10 10 20 20 30 75 TiZr XD4600 5 30 30 30 50 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 10 10 10 15 25 40 40 50 TiZr WC2310 0 0 0 0 0 1 1 2 2 2 0 0 2 10 10 SAA XW1044-3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SAA B 1494 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SAA XD4600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 10 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 SAA XB5315 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ROCA XD4600 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ROCA WC2310 5 5 15 15 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PY XD4600 90 90 90 90 90 0 10 30 30 50 85 90 95 95 100 60 80 90 100 100 10 25 25 25 40 70 80 80 90 100 95 100 100 100 100 PY WC2310 0 0 0 0 2 2 2 2 2 5 5 5 10 15 15 5 5 5 5 5 50 60 60 60 70 50 60 100 100 100 2-k adhesive 1 - 5 % 5 - 15 % 15 - 100 % Date: 2004-01-13 • Page: 8 • Hydro Aluminium
Main ageing notes Outdoor, with salt spray 1 year, not selective enough Initiated corrosion may not propagate Trailer At least 2 times as corrosive than accelerated outdoor. Trailer + outdoor storage Condition for corrosion propagation is present SWAAT Proper ranking? Mainly a corrosion failure mechanism in service Adhesives, relatively small differences Surfaces, large differences Detailed test results will be available via the Automotive Manual, European Aluminium Association in the appendix report from working group GTP 4, General Test Procedures- Bond durability Date: 2004-01-13 • Page: 9 • Hydro Aluminium
Page 1 and 2: Hydro Aluminium Light Metal Surface
Page 3 and 4: Introduction Maybe little of a gene
Page 5 and 6: Accelerated lap shear testing A ra
Page 7: Failure surfaces, after 1 year on t
Page 11 and 12: Mud weight vs. Relative humidity No
Page 13 and 14: pH values measured for the salt sol
Page 15 and 16: Test conditions Test plates were c
Page 17 and 18: Average weight loss for the differe
Page 19 and 20: Average pit depth after four weeks
Page 21 and 22: Requirements on a corrosion screeni
Page 23 and 24: Salt solutions Salt no. 1 2 3 4 5 6
Page 25 and 26: Tested materials Adhesive Heat c
Page 27 and 28: 5754 passivated, 3 months exposure
Page 29 and 30: Summary, salt solution tests Acidi
Page 31 and 32: Baseline testing, ambient condition
Page 33 and 34: Failure modes (2) Interfacial failu
Page 35 and 36: TEM, Altered layer on etch (2) Long
Page 37 and 38: Summary, environmental fatigue test
Page 39: Conclusion Durable bonded joints r

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