It is available in a variety of compositions, most popular of which are ASTM-A-213, Grade TD-321. (16% Cr, 8%N stabilized with titanium) and ASTM-A-213 Grade TD-347 (18% Cr, 8% Ni) stabilized with columbium. Either of these two may be used upto to 649oC. Care must be given to choice of welding rod to avoid brittleness in the welds.
