Dual phase steel production bumpers
Dual phase steel production bumpers
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The use of HSLA dual phase steel is an effective method of reducing bumper weight while meeting ever increasing government performance requirements. A paper analysis, followed by a hardware evaluation, successfully substituted 'dual phase' for conventional HSLA steel at a reduced thickness. Bumpers for the all-new 1979 Cadillac Eldorado were designed and released using dual phase steel with yield strengths of 70-80 ksi for the face bars. Production problem were overcome by modifications of mechanical properties and increased development experience with this steel. To achieve the full work-hardening potential of dual phase steel, bumper sections and draw dies must be designed for a uniform strain greater than three percent. Future dual phase steel for bumpers in the 80-120 ksi range is desirable, but further improvements in steel-making technology and part and die design techniques are required to achieve this goal. (DePo)
Document information
Dual phase steel production bumpers
Verbundstahl fuer die Fertigung von Stossstangen
SAE Papers. Cumulative Index ; 1-11
1979
11 Seiten, 25 Bilder, 8 Quellen
Conference paper
English
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