A length of 321 stainless steel straight tubing with 1.50 in OD and 18 gauge wall, 39.375 in long and 0.049 in thickness. Vibrant recommends 321 stainless for prolonged elevated-temperature use (800–1500°F) and forced induction applications where improved high-temperature performance, corrosion resistance, and resistance to stress fractures are important compared with 304 stainless.
Vibrant 321 SS Straight Tubing 1.50in O.D. 18 Gauge Wall Thickness