American Made 321 Stainless Steel Mandrel Bends 1 5 8" 180 Degree J JMD Tubes Mandrel Bend Stainless Steel 2 1 2" on a 2 1 2" CLR Vibrant 321 Stainless Steel 90 Degree Mandrel Bend 1.50in OD x 2.25in Vibrant For 3in Oval T304 SS 45 deg Vertical Mandrel Bend 6in x 6in Leg. Vibrants offering of 321 Stainless Steel Tubing and Mandrel Bends performs better than 304 Stainless Steel at prolonged, elevated operating temperatures (800 Degrees F to 1500 Degrees F 427 Degrees C to 816 Degrees C), making it highly recommended for use in forced induction applications. 321 Stainless Steel also features superior corrosion resistance and withstands tensile stress and stress fractures better than 304 Stainless Steel. Catalog