High strength steel pipe for reinforcing door of car

Details High strength steel pipe for reinforcing door of car High strength steel pipe for reinforcing door of car

1991-09-18

1993-01-19

Yee, Deborah

Land vehicles: bodies and tops

Bodies

Door or window with specified vehicle feature

296188, 49502, 148320, 148909, 138171, C22C 3800

Patent

active

051802040

ABSTRACT:
Herein described is a high strength steel pipe for reinforcing doors of a car, comprising a steel pipe made by seam-welding a steel sheet, wherein a ratio (Hv.sub.1 /Hv.sub.2) of a minimum hardness in a softened area of a weld affected zone to an average hardness in a base material satisfies the following formula,

REFERENCES:
patent: 2770563 (1956-11-01), Herzog
patent: 4204892 (1980-05-01), Economopoulos

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