420 Stainless Steel Pipe1.420 is equivalent to 3CR13 stainless steel tube.
2.containing chromium weight percentage 12-14%, with a minimum carbon value of 0.15%,typical value of 0.31%.
3.420 Stainless steel UNS standard number uns S42000 (USA uaisi,astma276, TP 420).
4."Cutlery Grade" martensitic steel, similar to the first stainless steel of high chromium.