License plate cosmetic corrosion test of automotive coated steel sheet
- Bethlehem Steel Corp., Bethlehem, PA (United States)., Homer Research Labs.
- PPG/Chemfil Corp., Troy, MI (United States). Coatings and Resins Group
- E.I. DuPont de Nemours and Co., Inc., Philadelphia, PA (United States). Automotive Products Development
- Quality/Statistics, Beaver, PA (United States)
A new standard laboratory test (SAE J2334) for evaluation of the cosmetic corrosion resistance of autobody steel sheet has been developed through the joint efforts of the Society of Automotive Engineers Automotive Corrosion Prevention Committee (SAE/ACAP) and the Auto/Steel Partnership (A/SP) Corrosion Task Force. Results from this test gave an excellent correlation with those of on-vehicle tests conducted for 5 years in Canada at St. John`s, Newfoundland, and Montreal, Quebec. To determine how results of the Canadian tests related to environments in the United States, racks of identical materials were mounted on the front license plate brackets of cars driven in various locations in the US snowbelt, including Bethlehem, Pennsylvania; Detroit, Michigan, and Chardon, Ohio. After 4 years to 5 years, these tests showed the US environments produced less scribe creep and more red rust than those conducted in Canada. Similar rankings were obtained for the scribe creep resistance of the various coated steel sheet products when compared at equivalent amounts of corrosion. However, the ranking of materials changed at longer exposure times in Canada, and for that reason, it was concluded that the 5-year Canadian results used in the development of the SAE J2334 test provided a better real-world performance standard.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 349891
- Journal Information:
- Corrosion, Vol. 55, Issue 4; Other Information: DN: Paper presented at Corrosion/98, March 1998, San Diego, CA (US); PBD: Apr 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cosmetic corrosion of painted aluminum and steel automotive body sheet: Results from outdoor and accelerated laboratory test methods
Behavior of painted steel and aluminum sheet in laboratory corrosion tests