Download Microsoft® SQL Server® 2012 Service Pack 4 (SP4) Express from Official Microsoft Download Center. Download Center. MS SQL Server 2012 Standard Free Edition - Microsoft Q&A
Use unless you have a specific need for named instances. download sql server 2012 standard new
SQL Server 2012 Standard Edition offers a wide range of exciting features and improvements, including: Download Microsoft® SQL Server® 2012 Service Pack 4
If you are starting a "new" project, you should download the latest versions instead: download sql server 2012 standard new