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

Chemical Composition of ASTM A268 TP439 Stainless Steel Pipes

C % Mn % P % S % Si % Cr % Ni % Al % N % Ti %
0.07 max 1.00 max 0.040 max 0.030 max 1.00 max 17.0-19.0 0.50 max 0.15 max 0.04 max [0.20+4(C+N)]-1.10

 

Mechanical Properties of ASTM A268 TP439 Stainless Steel Pipes

Tensile Strength, Mpa Yield Strength, MPa Elongation, % Hardness, HB
415 min 205 min 20 min 190 max