Ultra soft high carbon hot rolled steel sheet and method for...

Details Ultra soft high carbon hot rolled steel sheet and method for... Ultra soft high carbon hot rolled steel sheet and method for...

2007-02-26

2011-11-01

King, Roy (Department: 1733)

Metal treatment

Stock

Ferrous

C148S330000, C148S333000, C148S334000, C148S602000, C148S654000, C148S659000, C148S662000, C420S104000, C420S105000, C420S106000, C420S110000, C420S121000, C420S123000, C420S128000

Reexamination Certificate

active

08048237

ABSTRACT:
An ultra soft high carbon hot-rolled steel sheet has excellent workability. The steel sheet is a high carbon hot-rolled steel sheet containing 0.2 to 0.7% C, and has a structure in which mean grain size of ferrite is 20 μm or larger, the volume percentage of ferrite grains having 10 μm or smaller size is 20% or less, mean diameter of carbide is in a range from 0.10 μm to smaller than 2.0 μm, the percentage of carbide grains having 5 or more of aspect ratio is 15% or less, and the contact ratio of carbide is 20% or less.

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Fukui et al., English machine translation of JP 2001-220642, Aug. 2001.

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