Stanley M. Howard
Engineers at St Joseph, Rapid City, SD
License number
South Dakota 2219
Expiration Date
Jan 31, 2019
Category
Professional Engineer
Type
Chemical
Address
Address
501 E Estates Dr E, Rapid City, SD 05771
Phone
(605) 394-1282
Professional information
Boron-Copper-Magnesium-Tin Alloy And Method For Making Same
US Patent:
6074499, Jun 13, 2000
Filed:
Jan 9, 1998
Appl. No.:
9/004728
Inventors:
Glen A. Stone - Rapid City SD
Stanley M. Howard - Rapid City SD
Stanley M. Howard - Rapid City SD
Assignee:
South Dakoga School of Mines and Technology - Rapid City SD
International Classification:
C22C 902
US Classification:
148433
Abstract:
A high strength, highly electrically conductive copper-based alloy and method for producing the alloy are provided, with the alloy containing boron in the range of 0. 0-2. 9 at. %, magnesium in a range of about 2. 8-7. 6 at. %, tin in a range of about 2. 1-4. 3 at. %, and the balance copper and unavoidable impurities. The method for producing the high-strength, highly conductive alloy includes solution heat treating or annealing the material to dissolve the solute elements into a solid solution including the copper, rapidly quenching the material to freeze the solute elements in solid solution, and aging the material at a temperature in a range of about 400-475. degree. C. to precipitation harden the alloy material.
Boron-Copper-Magnesium-Tin Alloy And Method For Making Same
US Patent:
6231700, May 15, 2001
Filed:
Dec 10, 1999
Appl. No.:
9/458965
Inventors:
Glen A. Stone - Rapid City SD
Stanley M. Howard - Rapid City SD
Stanley M. Howard - Rapid City SD
Assignee:
South Dakota School of Mines and Technology - Rapid City SD
International Classification:
C22F 108
US Classification:
148686
Abstract:
A high strength, highly electrically conductive copper-based alloy and method for producing the alloy are provided, with the alloy containing boron in the range of 0. 0-2. 9 at. %, magnesium in a range of about 2. 8-7. 6 at. %, tin in a range of about 2. 1-4. 3 at. %, and the balance copper and unavoidable impurities. The method for producing the high-strength, highly conductive alloy includes solution heat treating or annealing the material to dissolve the solute elements into a solid solution including the copper, rapidly quenching the material to freeze the solute elements in solid solution, and aging the material at a temperature in a range of about 400-475. degree. C. to precipitation harden the alloy material.