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

Chemical Composition of ASTM A268 UNS S44660 Stainless Steel Pipes

C % Mn % P % S % Si % Cr % Ni % Mo % N % Ti+Nb %
0.03 max 1.00 max 0.040 max 0.030 max 1.00 max 25.0-28.0 1.00-3.50 3.00-4.00 0.04 0.20-1.00, & 6(C+N) min

 

Mechanical Properties of ASTM A268 UNS S44660 Stainless Steel Pipes

Tensile Strength, Mpa Yield Strength, MPa Elongation, % Hardness, HB
585 min 450 min 20 min 265 max