ASTM A268/ASME SA268 Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Chemical Composition of ASTM A268 TP444 Stainless Steel Pipes

C % Mn % P % S % Si % Cr % Ni % Mo % N % Ti+Nb %
0.025 max 1.00 max 0.040 max 0.030 max 1.00 max 17.5-19.5 1.00 max 1.75-2.5 max 0.035 max [0.20+4(C+N)]-0.80

 

Mechanical Properties of ASTM A268 TP444 Stainless Steel Pipes

Tensile Strength, Mpa Yield Strength, MPa Elongation, % Hardness, HB
415 min 275 min 20 min 217 max