Rebar with vanadium alloy

Details Rebar with vanadium alloy Rebar with vanadium alloy

1997-05-27

1998-12-22

Sheehan, John

Alloys or metallic compositions

Ferrous

Vanadium, tantalum or niobium containing

420 93, 420120, 148320, 148332, 4052541, C22C 3812, E21D 2000

Patent

active

058514813

ABSTRACT:
A steel alloy having 0.44-0.52 wt. % C, 1.1-1.6 wt. % Mn, 0.15-0.35 wt. % Si, a maximum of 0.04 wt. % P, a maximum of 0.05 wt. % S, a maximum of 0.45 wt. % Cu and 0.06-0.09 wt. % V. A No. 5 mine roof bolt formed from the steel alloy has a minimum yield strength of 90,000 psi. A mine roof bolt having a cross-sectional diameter of 7/8 inch or 1 inch and formed from the steel alloy has a minimum yield strength of 100,000 psi.

REFERENCES:
patent: 4289548 (1981-09-01), Bucher et al.
patent: 4486249 (1984-12-01), Woodings
patent: 4605449 (1986-08-01), Schummer et al.
patent: 4784531 (1988-11-01), Calandra, Jr.
patent: 4784922 (1988-11-01), Yoshimura
patent: 4806177 (1989-02-01), Held et al.
patent: 4836981 (1989-06-01), Shimada et al.
patent: 5017335 (1991-05-01), Bramfitt et al.
patent: 5403410 (1995-04-01), Shikanai et al.
patent: 5565044 (1996-10-01), Kim et al.
Deeley, P.D. et al., Ferroalloys & Alloying Additions Handbook (1981), pp. 107-110.
ASTM F432-88, Standard Specification For Roof and Rock Bolts and Accessories, (1988), pp. 1-11.

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