High-strength isotropic steel, method for making steel...

Details High-strength isotropic steel, method for making steel... High-strength isotropic steel, method for making steel...

2008-04-22

2008-04-22

Yee, Deborah (Department: 1793)

Metal treatment

Stock

Ferrous

C148S603000, C148S651000, C148S320000, C148S537000, C420S121000

Reexamination Certificate

active

10470247

ABSTRACT:
A steel having a composition, expressed in wt. %, of: 0.03≦C≦0.06; 0.50≦Mn≦1.10; 0.08≦Si≦0.20; 0.015≦Al≦0.070; N≦0.007; Ni≦0.040; Cu≦0.040; P≦0.035; S≦0.015; Mo≦0.008; Ti≦0.005; and boron in an amount such that: 0.65≦B/N≦1.60, the rest of the composition consisting of iron and impurities resulting from preparation. Also a method for making steel plates having this composition, and the resulting plates, produced by the method.

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