Stainless Steel Type 321/321H
This alloy is a stabilized grade of in essence 304 with the addition of Titanium (Ti) at 5 x Carbon content minimum. It prevents carbide precipitation during welding and improves elevated temperature properties.
Excellent resistance to oxidation and good creep strength. Corrosion resistance good. "H" grade is same alloy with a higher carbon range of 0.040% to 0.080%. Typical applications include refinery equipment, automotive exhaust headers, welded pressure vessels and generally applications with higher temperature service.