Abstract: In accordance with an exemplary embodiment, a high-strength brass alloy includes, by mass %, about 1.3% to about 2.3% of aluminum (Al), about 1.5% to about 3.0% of manganese (Mn), about 1% maximum of iron (Fe), about 1% maximum of nickel (Ni), about 0.4% maximum of tin (Sn), about 0.5% to about 2.0% of silicon (Si), about 57% to about 60% of copper (Cu), less than about 0.1% of lead (Pb), and the balance of zinc (Zn) and inevitable impurities, with the proviso that the ratio of Si/Mn is in the range of about 0.3 to about 0.7, and with the further proviso that the “zinc equivalent” content according to the following formula: ZnEq=Zn+Si*10?Mn/2+Al*5 is from about 51% to about 58%.

Abstract: Various embodiments of the invention provide a low nickel austenitic stainless steel alloy composition including about 0.6% to about 0.8% by weight carbon; about 16% to about 18% by weight chromium; about 4.5% to about 5.5% by weight nickel; about 2.0% to about 5.0% by weight manganese; about 0.8% to about 1.2% by weight tungsten; about 0.8% to about 1.2% by weight molybdenum; about 0.65% to about 0.85% by weight niobium; about 0.3% to about 1.0% by weight silicon; balance iron and unavoidable impurities, wherein percentages are based on the overall weight of the composition. The invention further provides articles, such as turbine housings, prepared using the inventive alloys.

Abstract: In accordance with an exemplary embodiment, a high-strength brass alloy includes, by mass %, about 1.3% to about 2.3% of aluminum (Al), about 1.5% to about 3.0% of manganese (Mn), about 1% maximum of iron (Fe), about 1% maximum of nickel (Ni), about 0.4% maximum of tin (Sn), about 0.5% to about 2.0% of silicon (Si), about 57% to about 60% of copper (Cu), less than about 0.1% of lead (Pb), and the balance of zinc (Zn) and inevitable impurities, with the proviso that the ratio of Si/Mn is in the range of about 0.3 to about 0.7, and with the further proviso that the “zinc equivalent” content according to the following formula: ZnEq=Zn+Si*10?Mn/2+Al*5 is from about 51% to about 58%.

Abstract: Various embodiments of the invention provide a low nickel austenitic stainless steel alloy composition including about 0.6% to about 0.8% by weight carbon; about 16% to about 18% by weight chromium; about 4.5% to about 5.5% by weight nickel; about 2.0% to about 5.0% by weight manganese; about 0.8% to about 1.2% by weight tungsten; about 0.8% to about 1.2% by weight molybdenum; about 0.65% to about 0.85% by weight niobium; about 0.3% to about 1.0% by weight silicon; balance iron and unavoidable impurities, wherein percentages are based on the overall weight of the composition. The invention further provides articles, such as turbine housings, prepared using the inventive alloys.