1991-02-01

Development of a New Bake-Hardenable Galvannealed Sheet Steel for Automotive Exposed Panels 910293

Various types of bake-hardenable steels have been developed and applied to automotive body panels for a weight reduction since 1981. Recently for the improvement in the cosmetic corrosion resistance of the exposed panels, an ultra-low carbon bake-hardenable galvannealed steel was developed and has been produced in a large quantity. The main metallurgical features of the ultra-low carbon bake-hardenable steel are follows, (1) adjustment of bake-hardenability by controlling the total carbon content between 15 and 25 wt.ppm, (2) suppression of TiC formation by controlling Ti content between 48/14 ·N and 48·(N/14+S/32). (3) optimisation of temper rolling condition to eliminate the stretcher strain.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X