Welders are often looking for a good reference detailing recommended amperage levels based on tungsten welding electrode size and type. Although Midwest Tungsten Service only provides 1/16", 3/32", and 1/8" electrodes, some projects call for a slightly bigger diameter, such as 5/32" or 3/16".  Additionally, you might have your own preference that fits your unique situation. We’ve put together a reference based on recommendations from the American Welding Society

Source: American Welding Society Standard A5.12M/A5.12:2009

*The values listed above are based on the use of argon gas, and may vary depending on the type of shielding gas, equipment, and application.