Si(Ge)(-) Cu(-)V Universal alloy steel
First Claim
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1. An alloy steel composition comprising by weight percent:
- 0.60-1.50% germanium;
0.40-0.80% copper;
0.10-0.35% vanadium; and
the remainder, iron, manganese, silicon, chromium, carbon and incidental impurities.
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Abstract
A composition and method for reducing cost and improving the mechanical properties of alloy steels. The invention resides in the ability of certain combinations of carbon-subgroup surfactants and d-transition metals to modify and control diffusion mechanisms of interstitial elements; to reduce or prevent the formation of non-equilibrium segregations of harmful admixtures and brittle phases on free metal surfaces and grain and phase boundaries; and to alter and control phase transformation kinetics in steel during heating and cooling.
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Citations
2 Claims
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1. An alloy steel composition comprising by weight percent:
- 0.60-1.50% germanium;
0.40-0.80% copper;
0.10-0.35% vanadium; and
the remainder, iron, manganese, silicon, chromium, carbon and incidental impurities.
- 0.60-1.50% germanium;
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2. (Reproduced anew as submitted in the Response (Paper No. 17) to the Final Office action) A general purpose construction carburizing or nitriding steel composition comprising by weight percent:
- 0.75-1.50% of silicon;
0.40-0.80% of copper;
0.10-0.35 of vanadium;
0.35-0.75% of manganese;
0.60-3.0% of chromium;
0.08 to less than 0.30% of carbon;
iron and the remainder incidental impurities, whereby improved mechanical properties, reduced complexity, and reduced costs of steel compositions are attained.
- 0.75-1.50% of silicon;
Specification