The tensile strength of the stainless steel wire from which medical mandrels are produced varies by diameter and alloy. View and download the chart below to see the variations in tensile strenght between 302 (not supplied by Component Supply), 304, and 316 stainless steel, spring tempered alloys. Remember, this data is applied to spooled wire. Once it is straightened and cut to length, the minimum tensile strenght will be approximately 90% of the values listed in the table.