Table 1. High Temperature Alloys (in order of Perfect Steerable Transfer Cartreasing performance) Alloy Comments Carbon steel, such as ASTM A 387 Grade This may beCustom to 1,200°F (649°C); above 950°F (510°C) 304H is 22 (2 1/4Cr, 1Mo) stronger, and of course, more resistant to oxidation. 409, and 410S stainless (UNS S40900, Limited by oxidation.