Method of making cold rolled full hard steel strapping

Details Method of making cold rolled full hard steel strapping Method of making cold rolled full hard steel strapping

2006-04-10

2009-02-17

Yee, Deborah (Department: 1793)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S603000

Reexamination Certificate

active

07491277

ABSTRACT:
A cold rolled full hard steel strap usable in a strapping machine has a tensile strength of at least about 125.7 thousand pounds per square inch (KSI) when the strap has a width of about 0.500 inches and a thickness of 0.020 inches. The steel strap is fabricated from a coiled steel formed by hot mill rolling and reduced by cold rolling. The steel strap has a composition of approximately (in weight percent): 0.02 to 0.25 percent carbon, 0.15 to 1.50 percent manganese, 0.01 to 0.12 percent aluminum, 0.04 to 0.03 percent nitrogen, 0.04 to 0.50 percent copper, 0.03 to 0.25 percent nickel, 0.02 to 0.25 percent molybdenum, 0.03 to 0.25 percent chromium, maximum 0.05 percent phosphorous, maximum 0.05 percent sulfur, and maximum 0.25 percent silicon. A method for forming the strap also is disclosed.

REFERENCES:
patent: 3421951 (1969-01-01), Shelton
patent: 5656103 (1997-08-01), Roberts
patent: 6635127 (2003-10-01), Doonan et al.
patent: 6814817 (2004-11-01), Van Houten et al.
patent: 2004-359973 (2004-12-01), None
Computer-generated English translation of Japanese patent 2004-359973, Masaharu Oka, Dec. 24, 2004.

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